Identify the level of ecological organization referenced in this statement: The herd of elephants moved quickly. Question 9 options:
Answers
The level of ecological organization referenced in the statement "The herd of elephants moved quickly" is the population level.
This is because a population consists of individuals of the same species, in this case, elephants, living in the same area and interacting with one another.
In this particular statement, the focus is on a group of elephants, referred to as a herd. A herd is a group of individuals of the same species, in this case, elephants, that live and interact together. The movement of the herd as a collective entity implies the behavior and characteristics of the population as a whole.
At the population level of ecological organization, the emphasis is on understanding the dynamics, behaviors, and interactions of a group of individuals belonging to the same species in a particular area.
The population level provides insights into factors such as population size, population density, population growth, social dynamics, and reproductive patterns.
In the given statement, the mention of the herd of elephants moving quickly suggests a collective behavior and movement pattern observed in a population of elephants.
This observation would be relevant to understanding the ecological dynamics and behavioral characteristics specific to elephant populations, such as their migratory patterns, foraging strategies, or response to environmental changes.
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Related Questions
There is no air resistance on the moon, so when Neil Armstrong dropped a
hammer all of the potential energy turned into kinetic energy. If Neil was 12
feet tall instead of 6 feet, would the hammer be moving faster or slower
just before hitting the ground? Why?
Answers
Answer: faster
Explanation:
Given
hammer is dropped from a height of 12 ft on the surface of the moon
Here, the potential energy is converted into kinetic energy
\(\Rightarrow mgh=\dfrac{1}{2}mv^2\\\\\Rightarrow v=\sqrt{2gh}\)
That is velocity is a function of the square root of height. The more the height, greater is the velocity.
So, the hammer hits the ground faster .
Complete the following sentence: How much you pay in taxes depends on _________________________.
Answers
Answer:
How much you pay in taxes depends on the amount of your taxable income
Explanation:
The total amount expected to be payed as taxes is a factor of the amount of taxable income earned within the given tax period.
The taxable income is found by subtracting the amount of deductions and exemption allowed in the tax year from the gross income. It is also specified as the adjusted gross income
The set marginal tax rate indicates the percentage of the taxable income that is to be paid as taxes, such that there are three different ranges or tax brackets and taxes are paid according to the bracket to which a taxable income belongs.
if you place a pipe over the end of a wrench trying to rotate to rotate a stubborn bolt, effectively making the wrench handle twice as long, you'll multiply the torque by:
a. eight
b. four
c. tow
Answers
If you place a pipe over the end of a wrench, effectively making the wrench handle twice as long, you'll multiply the torque by a factor of two. Therefore, the correct answer is:
c. two
By extending the length of the wrench handle, you increase the lever arm or the distance between the axis of rotation (fulcrum) and the point where the force is applied (the end of the handle). Torque is directly proportional to the length of the lever arm. When you double the length of the wrench handle, you double the lever arm, resulting in a twofold increase in torque.
Placing a pipe over the end of a wrench, effectively doubling the wrench handle's length, multiplies the torque by a factor of two. This is because torque is directly proportional to the length of the lever arm, and by doubling the handle's length, you double the lever arm and consequently double the torque.
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How many of the large, Galilean satellites are in synchronous rotation around Jupiter (always turning the same face toward Jupiter)?
Answers
All four of the Galilean satellites are in synchronous rotation around Jupiter, always turning the same face toward Jupiter.
The inner solar system does not, however, include analogs for all of the Galilean moons' characteristics. For instance, all four of the Galilean satellites rotate synchronously as a result of Jupiter's tidal influence, ensuring that one face of each satellite is always pointed toward the parent planet.
While even Mercury's orbit is not synchronous, only Mercury among the terrestrial planets is substantially impacted by the tidal force of the Sun. The development of Jupiter and the Galilean satellites, according to many scientists, may have really resembled on a minor scale the development of the Sun and the inner planets. Studying the Galilean moon system might thus help us gain important knowledge about the processes that gave rise to the planet we live in.
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A 1.50 × 10^-6-meter-long segment of an electromagnetic wave is represented below. Which type of electromagnetic wave does the segment in the diagram represent?
1) ultraviolet
2) x-rays
3) visible light
4) infrared
Answers
The electromagnetic radiation with a wavelength of 1.5 x 10⁻⁶ m corresponds to infrared radiation.
option D.
What is an electromagnetic wave?Electromagnetic waves are a form of radiation that travel though the universe.
So electromagnetic radiation consists of waves of the electromagnetic field, which propagate through space and carry momentum and electromagnetic radiant energy.
Examples of electromagnetic radiations include;
ultravioletx-raysvisible lightinfraredThe electromagnetic radiation with a wavelength of 1.5 x 10⁻⁶ m corresponds to infrared radiation.
Thus, option D is the correct answer.
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HELP!!! IM BEIN TIMEDDDDD!!
What happens to the salinity and temperature of ocean water as the depth increases?
A. The salinity and temperature of ocean water remain the same as depth increases.
B. The salinity and temperature of ocean water increase as the depth increases.
C. The salinity of ocean water decreases and the temperature of ocean water increases as the depth increases.
D. The salinity of ocean water increases and the temperature of ocean water decreases as the depth increases.
Answers
Answer:
the awnser is c The salinity of ocean water decreases and the temperature of ocean water increases as the depth increases.
what effect does mass have on a rollercoaster ride?
Answers
Answer:
The more mass a body has the more inertia it has. If the roller coaster is moving, it will want to keep moving, along the direction of motion, unless something causes it to speed up or slow down. This resistance of the moving roller coaster to changing its velocity is another example of its inertia.
Answer:
the weight and force of the roller coast and the speed of when it goes up and down
Based on the figure, a decrease in _________ could cause the economy to move from point a to point b
Answers
A decrease in production of goods could cause the economy to move from point a to point b.
What cause shifts in economy?Shifts in the production are due to many factors that change the output of an economy such as advances in technology, changes in resources, more education or training and changes in the labor force.
So we can conclude that a decrease in production of goods could cause the economy to move from good to poor.
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Find the x and y-components of the vector vector a =(15 m/s^ 2, 39 left of -y axis)
Answers
The x and y components of the vector a = 15 m/s^2 and 39 left of y axis are -14.4, 3.99 m/s^2.
What is a vector and how it is calculated out to be so?In science we need a method to define both direction and magnitude, vector is one such method.In this question is given vector a = 15 m/s^2 , and is 39 left to the y axis , for calculating x and y component.To calculate the x component , = -asin39 degree = -15 x 0.96 = -14.4 m/s^2.To calculate the y component of the vector , = -a cos39 degree= -15 x 0.266 = -3.99 m/s^2.So the x and y component of the vector are -14.4 m/s^2 and 3.99 m/s^2 respectively.To know more about vector visit:
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Which element will form an anion?
A. boron
B. iodine
C. calcium
D. potassium
Answers
Answer:
b. Iodine
Explanation:
Its b because iodine is a halogen and halogens always produce anions
A rocket is launched from the surface of the earth with a speed of 9.0x103 m/s. What is the maximum altitude reached by the rocket? (MEarth=5.98x1024 kg, REarth=6.37x106 m)
Answers
From the Law of conservation of energy, we know that the sum of the kinetic and potential energy of the rocket is the same at the surface of the Earth and at the maximum altitude. Nevertheless, the kinetic energy of the rocket when it is at the maximum altitude is 0:
\(\begin{gathered} K_1+U_1=K_2+U_2 \\ K_2=0 \\ \Rightarrow K_1+U_1=U_2 \end{gathered}\)The kinetic energy is given by:
\(K=\frac{1}{2}mv^2\)On the other hand, the gravitational potential energy for big changes in altitude (comparable to the radius of the Earth) is given by the expression:
\(U=-\frac{GMm}{r}\)Where M is the mass of the Earth, m is the mass of the rocket, r is the distance from the center of the Earth to the rocket and G is the gravitational constant:
\(G=6.67\times10^{-11}N\cdot\frac{m^2}{\operatorname{kg}}\)At the beggining of the movement, the value of r corresponds to the radius of the Earth:
\(U_1=-\frac{GMm}{R_E}\)At the end of the movement, the value of r corresponds to the radius of the Earth plus the maximum altitude h:
\(U_2=-\frac{GMm}{R_E+h_{}}\)Substitute the expressions for U_1, K_1 and U_2 and simplify the equation by eliminating the factor m:
\(\begin{gathered} \frac{1}{2}mv^2-\frac{GMm}{R_E}=-\frac{GMm}{R_E+h} \\ \Rightarrow\frac{1}{2}v^2-\frac{GM}{R_E}=-\frac{GM}{R_E+h} \end{gathered}\)Isolate the term GM/(R_E+h):
\(\Rightarrow\frac{GM}{R_E+h}=\frac{GM}{R_E_{}}-\frac{1}{2}v^2\)Divide both sides by the factor GM:
\(\Rightarrow\frac{1}{R_E+h}=\frac{1}{R_E}-\frac{v^2}{2GM}\)Take the reciprocal to both sides of the equation:
\(\Rightarrow R_E+h=\frac{1}{\frac{1}{R_E}-\frac{v^2}{2GM}}\)Isolate h:
\(h=\frac{1}{\frac{1}{R_E}-\frac{v^2}{2GM}}-R_E\)Substitute the values of each variable: R_E=6.37x10^6m, M=5.98x10^24kg, G=6.67x10^-11 N*m^2/kg^2, and v=9.0x10^-3 m/s:
\(\begin{gathered} h=\frac{1}{\frac{1}{6.37\times10^6m}-\frac{(9.0\times10^3\cdot\frac{m}{s})^2}{2(6.67\times10^{-11}N\cdot\frac{m^2}{kg^2})(5.98\times10^{24}kg)}}-6.37\times10^6m \\ =18.03\times10^6m-6.37\times10^6m \\ =11.7\times10^6m \end{gathered}\)Therefore, the maximum altitude reached by a rocket with an initial speed of 9.0x10^3m is:
\(11.7\times10^6m\)Camden constructs a model of a double convex lens using two clear plastic circles that are round on one side and flat on the other. He attaches the circles at the edges. How does his model look?
Answers
Using two circular, flat, clear plastic circles that he attaches at the edges, Camden creates a model of a double convex lens that appears thicker in the center and thinner at the edges.
What do you call a double convex lens?Bi-convex (Double-convex) lenses focus parallel light rays to a single point similarly to plano-convex lenses because they have the same radius of curvature on both sides of the lens. As a general rule, bi-convex lenses work best with conjugate ratios between 5:1 and 1:5.
By twice refractively (bending) the light rays from a distant object, a double convex lens, also known as a converging lens, concentrates the diverging, or blurred, light rays.
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. ASSERTION: WHEN ASTRONAUTS THROW SOMETHING IN SPACE, THAT OBJECT WOULD CONTINUE MOVING IN THE SAME DIRECTION AND WITH THE SAME SPEED. REASON: THE ACCELERATION OF AN OBJECT PRODUCED BY A NET APPLIED FORCE IS DIRECTLY RELATED TO THE MAGNITUDE OF THE FORCE, AND INVERSELY RELATED TO THE MASS OF THE OBJECT.
Answers
Both the assertion and the reason given are true.If the mass of the object is less, the acceleration produced by the force will be more. Hence, the acceleration produced by the force is directly proportional to the magnitude of the force and inversely proportional to the mass of the object.
The given assertion: When astronauts throw something in space, that object would continue moving in the same direction and with the same speed; and the given reason: The acceleration of an object produced by a net applied force is directly related to the magnitude of the force, and inversely related to the mass of the object are both correct.Astronauts are capable of throwing objects in space because they are beyond Earth's gravity and do not have to deal with any significant air resistance. In the absence of other forces like friction or air resistance, the initial velocity will be conserved, and the object will continue to move with the same speed and direction. The object would continue to move in a straight line with the same speed because no external force acts on it to change the object's state of motion.Newton's second law states that the force of an object is directly proportional to its acceleration, but inversely proportional to its mass. F=ma, where F is force, m is mass, and a is acceleration. Therefore, if the mass of the object is less, the acceleration produced by the force will be more. Hence, the acceleration produced by the force is directly proportional to the magnitude of the force and inversely proportional to the mass of the object.
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5. Chad wants to investigate whether adding a solute to water affects its boiling point and freezing point. He set up an experiment and recorded the boiling and freezing point in degrees Celsius (°C), his results are in the data table.
EFFECT OF SOLUTE ON BOILING AND FREEZING POINTS
Test
A.Water
B.Water + 10 grams of salt
C.Water + 20 grams of salt
D.Water +30 grams of salt
E.Water + 40 grams of salt
Boiling Point (°C)
A.100.0
B.100.5
C.101.0
D.101.5
E.102.0
Freezing Point (°C)
A.0
B.-2
C.-4
D.-6
E.-8
Based on the data, which statement would be the best conclusion?
A. Adding salt to water decreases the boiling point.
B. Adding any solute to water increases the boiling point.
C. Adding salt to water increases the boiling point and decreases the freezing point.
D. Adding any solute to water increases the boiling point and decreases the freezing point.
Answers
Answer:
Explanation:
C. Adding salt to water increases the boiling point and decreases the freezing point.
Match the choices below to the correct description. Drag the terms on the left to the appropriate blanks on the right. ResetHelp blank − this body wave is a compressional wave. − this body wave is a compressional wave. blank − this body wave is a shear wave. − this body wave is a shear wave. blank − this surface wave moves from side to side. − this surface wave moves from side to side. blank − this surface wave moves up and down. − this surface wave moves up and down.
Answers
Answer: hello the terms are missing but I have provided the answer ( the terms and matched them properly
answer :
P WAVESS WAVESL WAVESR WAVESExplanation:
This body wave is a compressional wave : P WAVES
This body wave is a shear wave : S WAVES
This surface wave moves from side to side : L WAVES
This surface wave moves up and down. : R WAVES
A body wave is a type of wave that passes through the interior of the earth and they are classified as ; P and S waves while surface waves are seismic waves that travel near the earth's surface
what is the density rhoh of hot air inside the balloon? assume that this density is uniform throughout the balloon. express the density in terms of th , tc , and rhoc .
Answers
The density (ρh) of hot air inside the balloon, assuming it is uniform throughout, can be expressed in terms of Th, Tc and ρc (density of surrounding air) using the ideal gas law as follows: ρh = (ρc * Tc) / Th
The ideal gas law states that for a given amount of gas, the product of its pressure (P) and volume (V) is proportional to the product of its temperature (T) and the number of moles (n). Mathematically, it can be expressed as:
PV = nRT
Where R is the ideal gas constant.
Since we are considering a balloon filled with hot air, the pressure and volume inside the balloon remain constant. Therefore, we can modify the ideal gas law to relate the densities of hot air (ρh) and surrounding air (ρc) to their respective temperatures:
(ρh * V) / Th = (ρc * V) / Tc
Here, V represents the volume of the balloon, which cancels out on both sides of the equation.
Simplifying the equation:
ρh / Th = ρc / Tc
Rearranging the equation to solve for ρh:
ρh = (ρc * Tc) / Th
The density (ρh) of hot air inside the balloon, assuming it is uniform throughout, can be calculated using the ideal gas law. The expression for ρh in terms of Th (temperature of hot air), Tc (temperature of surrounding air), and ρc (density of surrounding air) is given as: ρh = (ρc * Tc) / Th.
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A reconnaissance
plane flies 584 km away
from its base at 940 m/s, then flies back to its
base at 1410 m/s.
What is its average speed?
Answer in units of m/s.
Answers
The average speed of the plane is 1128m/s.
The entire distance covered by the object in a specific amount of time is its average speed. Average speed exists as a scalar quantity. The magnitude serves as its representation, and it lacks direction.
Given:
Distance one way = 584km
Speed from its base = 940m/s
Speed back to base = 1410m/s
To find:
Average speed, Avg = ?
Formula:
Avg = total distance / total time
Calculations:
Total distance = 584 + 584 = 1168km = 1168000m
Total time = (584000/940) + (584000/1410)
Avg = 1168000 / [(584000/940) + (584000/1410)]
Avg = (2 x 940 x 1410) / (1410 + 940)
Avg = 2650800 / 2350
Avg = 1128m/s
Result:
The average speed of the plane is found to be 1128m/s.
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While working on a design for a new roller coaster, the designers noticed that the roller coaster cars did not have enough energy to complete the loop. How should they adjust the track so that the cars can complete the loop?
A. Decrease the height of the hill before the loop because that would decrease the kinetic energy of the cars.
B. Increase the height of the hill before the loop because that would decrease the kinetic energy of the cars.
C. Increase the height of the hill before the loop because that would increase the kinetic energy of the cars.
D. Decrease the height of the hill before the loop because that will increase the kinetic energy of the cars.
Answers
Answer: B
Explanation:
Best Answer will receive BRAINLIEST One consequence of Newton's third law of motion is that __________. A. every object that has mass has inertia B. a force acting upon an object increases that objects acceleration C. all actions have equal and opposite reactions D. none of the above
Answers
One consequence of Newton's third law of motion is that all actions have equal and opposite reactions. (C)
In fact, that's pretty much what the law itself says in so many words.
Answer:
Its C All actions have equal and opposite reactions
Explanation:
Ive done this before
A bus of mass 3,500 kg that is moving at a speed of 18 m/s and
a car of mass 1,300 kg that is moving at a speed of 20 m/s.
What's the total linear momentum of the bus and the car?
Answers
3500(18) + 1300(20) =
63000 + 26000 =
890000 Kg • m/s
According to the given statement The total linear momentum of the bus and the car 890000 Kg • m/s.
What is a momentum in physics?Momentum be defined as the intensity of a body's motion. As momentum depends on both velocity and the orientation of the skin's motion, it is quantified by "mass velocity". Since speed is a vector and mass is a scalar, momentum is the product. Momentum propels you through from the finish line after helping you get beyond the initial difficulty of being unable to begin. Gaining momentum will enable you to go closer to your objectives by fostering optimistic thinking and energy.
How does momentum start?In Newtonian mechanics, an object's mass and velocity are combined to form momentum, more precisely linear energy or translational momentum. It has both a magnitude and direction, making it a vector quantity.
Briefing:P₁ = 3,500 kg
P₂ = 18 m/s
m₁ = 1,300 kg
V₁ = 20 m/s.
P₁ + P₂ = m₁V₁ + m₂V₂
3500(18) + 1300(20)
=63000 + 26000
=890000 Kg • m/s
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how old was the inventor of the treadmill when he died
Answers
Answer:
At the age of 96Explanation:
William Edward Staub was American mechanical engineer.
William Edward Staub was the one who invented the first consumer modern home trardemill.
He was born on 9 November 1915 at Philadelphia, US
He died on 19th July, 2012 at Clifton, US
10 m/s^2 is an example of which vocabulary word?
Answers
Answer:
Acceleration.
Explanation:
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.
Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.
Mathematically, acceleration is given by the equation;
\(Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}\)
\(a = \frac{v - u}{t}\)
Where,
a is acceleration measured in \(ms^{-2}\)
v and u is final and initial velocity respectively, measured in \(ms^{-1}\)
t is time measured in seconds.
The S.I unit for measuring acceleration is meters per seconds square (m/s²).
Hence, 10 m/s^2 is an example of acceleration.
to prevent shoplifting, stores install security mirrors at the ceiling. a spherical mirror has a focal length of 25 cm. find its radius of curvature in cm.
Answers
Security mirrors are placed above the ceiling of establishments to deter stealing. A spherical mirror has a 25 cm focal length. R = 50 cm is the radius of curvature.
It has been found that the radius of curvature for spherical mirrors with small apertures is equivalent to double the focal length. R therefore equals 2f. It is evident that the main focus of a spherical mirror is located in the middle, halfway between the curvature's centre and the pole. A curve's radius of curvature at any given location is, roughly speaking, the radius of the circle that fits the curve there the best. One divided by the radius of curvature is the curvature, indicated by the symbol. You must locate the circle that fits that point the best in order to calculate the curvature there. The osculating circle is what's known as this. The reciprocal of the curve's curvature at that point is known as the osculating circle radius.
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If the boat goes from 30 km/h to 50 km/h over the next 4 h, what is its acceleration?
Please help me
Answers
Answer:
The acceleration is 5km/h
Explanation:
Given
Initial Velocity (u) = 30km/h
Final Velocity (v) = 50km/h
Time (t) = 4h
Required
Determine the acceleration
This question will be answered using the first equation of motion;
\(v = u + at\)
Substitute values for u, v and t
\(50 = 30 + a * 4\)
\(50 = 30 + 4a\)
Subtract 30 from both sides
\(50 - 30 = 30 - 30+ 4a\)
\(20 = 4a\)
Divide both sides by 4
\(\frac{20}{4} = \frac{4a}{4}\)
\(5 = a\)
\(a = 5\)
Hence;
The acceleration is 5km/h
If the work required to stretch a spring 1 ft beyond its natural length is 6 ft-lb, how much work is needed to stretch it 9 in. beyond its natural length? Ft-lb Enhanced Feedback Please try again. Recall Hooke's Law: The force required to maintain a spring stretched x units beyond its natural length is proportional to x. So f(x) = kx, where k is the spring constant. Start by setting up the integral for the work required to stretch the spring a given distance beyond its natural length for the case where work is given. Use this integral to find k, and use k to find the amount of work needed to stretch the spring the given distance beyond its natural length for the case where work is unknown. Pay attention to units.
Answers
The work required to stretch the spring 9 in. beyond its natural length is 6.75 ft-lb. We know the work required to stretch a spring 1 ft beyond its natural length is 6 ft-lb.
So we can use this information to find the spring constant, k. According to Hooke's Law, the force required to maintain a spring stretched x units beyond its natural length is proportional to x. So f(x) = kx.
We can find k by using the given work and the integral for work: W = ∫F(x)dx from 0 to 1 ft; where W is the work required to stretch the spring 1 ft beyond its natural length, F(x) is the force required to stretch the spring x units beyond its natural length, and the integral is evaluated from 0 to 1 ft.
Since f(x) = kx, we have F(x) = kf(x) = kx. Therefore, the integral becomes:
W = ∫kx dx from 0 to 1 ft
W = [1/2 kx^2] from 0 to 1 ft
W = 1/2 k(1 ft)^2 - 1/2 k(0)^2
W = 1/2 k
Substituting the given value of W = 6 ft-lb, we get: 6 ft-lb = 1/2 k
k = 12 ft-lb/ft. Now we can use the spring constant to find the work required to stretch the spring 9 in. beyond its natural length:
First, we need to convert 9 in. to feet: 9 in. = 0.75 ft
According to Hooke's Law, the force required to maintain a spring stretched x units beyond its natural length is proportional to x. So f(x) = kx.
The work required to stretch the spring 0.75 ft beyond its natural length is: W = ∫kx dx from 0 to 0.75 ft
W = [1/2 kx^2] from 0 to 0.75 ft
W = 1/2 k(0.75 ft)^2 - 1/2 k(0)^2
W = 1/2 k(0.75 ft)^2
Substituting the value of k, we get: W = 1/2 (12 ft-lb/ft) (0.75 ft)^2
W = 6.75 ft-lb. Therefore, the work required to stretch the spring 9 in. beyond its natural length is 6.75 ft-lb.
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A car drives 40 miles at an angle of 35 degrees north of east then drives for 50 miles due north and finally 10 miles at an angle of 20 degrees north of west what is the cars resultant magnitude and direction
Answers
Answer:
Below
Explanation:
FIND TOTAL NORTH DISPLACEMENT
40 sin 35 + 50 + 10 sin 20 = 76.363 mi
FIND TOTAL E-W DISPLACEMENT
40 cos 35 - 10 cos 20 = 23.369 mi
Total resultant displacement ( using pythag theorem)
sqrt ( 76.363^2 + 23.369^2 ) = 79.86 mi
angle = arctan ( 79.23 / 23.37) = 73 ° North of East
1. A fairground ride consists of a large vertical drum that spins so fast that everyone inside it stays pinned against the wall when the floor drops away. The diameter of the drum is 10 m. Assume that the coefficient of static friction between the drum and the rider's clothes is 0.15. a) What is the minimum speed required for the riders so that they stay pinned against the inside of the drum when the floor drops away? b) What is the angular velocity of the drum at this speed?
Answers
Answer:
a) In order for the riders to stay pinned against the inside of the drum when the floor drops away, the force of friction between the drum and the riders must be greater than or equal to the force of gravity pulling them down.The maximum force of friction that can be exerted on a rider is given by:f_max = μNwhere μ is the coefficient of static friction and N is the normal force acting on the rider.At the minimum speed required for the riders to stay pinned against the inside of the drum, the normal force acting on each rider is equal to their weight, so:N = mgwhere m is the mass of the rider and g is the acceleration due to gravity.The force of gravity pulling the rider down is:F = mgTherefore, the minimum speed required for the riders to stay pinned against the inside of the drum is given by:f_max = FμN = mgv_min = sqrt(rgμ)where r is the radius of the drum, which is half of the diameter, so r = 5m.Plugging in the values, we get:v_min = sqrt(59.80.15) = 2.16 m/sb) The angular velocity of the drum at this speed can be found using the formula:v = ωrwhere v is the linear velocity of the riders at the minimum speed required to stay pinned against the inside of the drum, r is the radius of the drum, and ω is the angular velocity of the drum.Rearranging this equation to solve for ω, we get:ω = v/rPlugging in the values, we get:ω = 2.16/5 = 0.432 rad/sSo the angular velocity of the drum at the minimum speed required for the riders to stay pinned against the inside of the drum is 0.432 rad/s.
high-mass stars have __________ lifetimes than low-mass stars.
Answers
Lifetimes of high-mass stars are shorter than those of low-mass stars.
Do stars with high masses live longer than stars with low masses?A star's ability to convert its hydrogen to helium will increase with mass.In spite of having more fuel, it turns that out high mass stars burn up that fuel considerably more rapidly than low mass stars.Hence, low mass stars live a lot longer than higher molecular stars do!
How long does a relatively low star last?Of all the sources of energy in the cosmos, low-mass planets are the ones that live the longest.Although though they outnumber all the other stars by a wide margin, they are the faintest, making them difficult to see.Some low-mass stars have a trillion-year life span.
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is the body temperature of every person 37 degree Celsius. Why?
Answers
Answer:
Scientists have found the reason why our body temperature is 98.6°farehenheit (37°c). Apparently it's the perfect balance as it's warm enough to prevent fungal infection but not so hot that we need to eat nonstop to maintain our metabolism. ... So we know we need a higher body temperature to ward off fungal infection.
Question on my physics homework
When I checked on the Alton towers website it told me that Nemesis' top speed is
25 m/s. (less than what I calculated). My stats and calculations are correct...so
why is this the case?
Answers
The case of 25 m/s top speed of the rollercoaster is correct because some energy were lost to friction while the calculated top speed of 32.8 m/s is for ideal case (when no energy is lost).
What is the velocity of the rollercoaster at the bottom?The velocity of the rollercoaster at the bottom is calculated by applying the principle of conservation of energy as follows;
potential energy of the rollercoaster at the top = kinetic energy of the rollercoaster at bottom
P.E (top) = K.E (bottom)
Note: the above is true, if and only if no energy is lost to friction.
mgh = ¹/₂mv²
gh = ¹/₂v²
2gh = v²
v = √2gh
where;
g is gravityh is the height of the dropThe velocity of the rollercoaster at the bottom is calculated as;
v = √ (2 x 9.8 x 55 )
v = 32.8 m/s
if Nemesis top speed at Alton's tower is 25 m/s which is less than the calculated value of 32.8 m/s, it simply implies that some of the potential energy of the rollercoaster at the top were lost to friction when it was moving to the bottom resulting in a smaller kinetic energy at the bottom compared to the initial potential energy at the top.
So the 25 m/s top speed is correct because some energy will be lost to friction.
Learn more about speed at bottom here: https://brainly.com/question/14470173
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The complete question is below:
Nemesis at Alton towers has a 55 m drop. The rollercoaster has a mass of 8000 kg. How fast will it travelling when it reaches the bottom?
When I checked on the Alton towers website it told me that Nemesis' top speed is
25 m/s. (less than what I calculated). My stats and calculations are correct...so
why is this the case?