Answer:
D. The Acceleration of object A is twice that of Object B.
This is because a force pushing on something light will move faster than an equally strong force pushing on something heavier.
a 1.8-kg mass attached to a spring oscillates with an amplitude of 9.3 cm and a frequency of 2.8 hz.
The frequency is 5.9 jules.
we have been given that the mass is equal to 2.4 kgs and the amplitude others 9.3 and returned to the power -2 m. Yeah. So he can write The angular frequency is two pi f. That is To buy into 3.8 Hz. That is equal to 23.87. Ready for a 2nd. Now to find the first concert,
we can write Omega Square. Um that is 23.87 reading perspective, but you didn't one second. We square this into 2.4 gauges. That is equal to 1,36, newtons per meter. How to find the total energy we laid half. Okay, A square that is equal to one by two and 21368.26 into 9.3 to 10 to the minus two squared. That is equality 5.9 Jules.
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An Object with a mass o 5.13kg placed on top of a spring compresses it by 0.25m (a) what is the force constant of the spring (b) How high will this object go when the spring releases its energy?
The force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m
The spring constant is the force needed to stretch or compress a spring, divided by the compressive or expansive distance. It's used to determine stability or instability in the spring, and therefore the system it's intended for. we know,
F = kx
Therefore,
k = F/x
We also know that the force being exerted on the spring is equal to the mass of the object. Hence, F = mg = 5.13 * 9.8 N = 50.174 N and we know compression due to the mass is 0.25m. Therefore,
K = 50.174/0.25 N/m
K = 200.696 N/m
Therefore, The Spring Constant is 200.696 N/m
On release, the spring potential energy gets converted to kinetic energy. Hence, on release, the height attained by the object is given by:
h = \(1/2 kx^{2}\)
We know that k=200.696 N/m and x=0.25 m. Therefore the height is:
h = \(1/2 (200.696 N/m)(0.25 m)^{2}\)
h = 2.5087 m
Therefore, the force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m
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Which are ways in which heat energy leaves the surface of land masses? select the three correct answers.
It is accurate to say that infrared energy, conduction to air later rising in convection, and evaporation are the processes in which the heat energy so produced exits the surface of land masses.
Fluid or gas particles are frequently moved by convection currents. These are produced as a result of variations in a particular gas or fluid's density and temperature. One of the two ways to transmit heat is through convection; the other two are through radiation and conduction. Only fluids, such as liquids and gases, undergo the convection process. This occurs because molecules within liquids and gases are free to move.
The difference in temperature between the two portions of the fluid can cause the convection process, which transfers heat energy. This temperature differential causes hot fluids to have a tendency to ascend while cold fluids have a tendency to sink.
The correct question is:
Which are ways in which heat energy leaves the surface of land masses? Select the three correct answers.(2 points)
a).evaporation
b).glacial motion
c).animal activity
d).conduction to air, which then rises in convection
e).plant growth
f).radiation of infrared energy
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p me have no brain please help I just wanna get through the year
According to the law of conservation of mass, what is the mass of sodium oxide (Na20) formed in this reaction? 4Na 91.96 g 02 32.00 g 2Na 0 ?
A. 247.92 grams
B. 123.96 grams
C. 61.68 grams
D. 495.84 grams
Answer:
B. 123.96 grams
Explanation:
what is python in programming.
Answer:
Python is a programming language uses code like java ,Css and HTML. it is uses in software and some application. It is use in coding website and application.
An object with a mass of 2.0 kg has a force of 5.0 newtons applied to it. What is the resulting acceleration of the object?
Answer:
2.5
Explanation:
F=m.a
(Force = mass . acceleration)
5=2.a
a= 5/2 = 2.5
a 0.43-kg meter stick balances at its center. if a necklace is suspended from one end of the stick, the balance point moves 12.3 cm toward that end. what is the mass of the necklace?
0.72 kg is the mass of the necklace To solve this problem, we can use the principle of moments.
The principle of moments states that the sum of the moments acting on an object must be zero for the object to be in equilibrium.
In this case, the moment of the meter stick about its center is equal to the moment of the necklace about the center. We can express this mathematically as:
0.43 kg x g x (L/2) = M x g x (L/2 - 12.3 cm)
where g is the acceleration due to gravity (9.81 m/s^2), L is the length of the meter stick (in meters), and M is the mass of the necklace (in kg).
Simplifying this equation, we get:
0.43 kg x (L/2) = M x (L/2 - 0.123 m)
Solving for M, we get:
M = (0.43 kg x L) / (2 x (L/2 - 0.123 m))
M = 0.43 kg / (1 - 0.246/L)
Now we can substitute the given values to find the mass of the necklace:
M = 0.43 kg / (1 - 0.246/0.5)
M = 0.72 kg
Therefore, the mass of the necklace is 0.72 kg.
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If the roller coaster car in the above problem were moving at twice the speed, then what would be its new kinetic energy
Answer:
it would move faster
Explanation:
If the roller coaster car in the above problem were moving at twice the speed, then 16000 Joules is the new kinetic energy.
What is kinetic energy?Kinetic energy is a type of power that a moving object or particle possesses. An item accumulates kinetic energy when work, which involves the transfer of energy, being done on it by exerting a net force.
A object in motion or particle has kinetic energy, which relies on both its mass and its rate of motion. Any combination of movements, including translation, rotation along an axis, and vibration, may constitute the kind of motion.
kinetic energy= ½mv²
v =4m/s
m= 2000kg
KE = ½ (2000) (4)²
=16000 Joules
Therefore, If the roller coaster car in the above problem were moving at twice the speed, then 16000 Joules is the new kinetic energy.
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A
is the order in which things are arranged.
O plan
sequence
O process
O goal
Answer:
sequence
Explanation:
sequences are the way in which things are ordered, for example: 1, 2, 3, 4 is a sequence:)
HELP HAVING BAD DAY NEED ANSWER QUICK!!!!
Jan can run at 7.5 m/s and Mary at 8.0 m/s. On a race track Jan is given
a 25 m head start, and the race ends in a tie. How long is the track?
Let's call the length of the race track as "x".
To solve for "x", we can use the formula:
\(\implies\text{ Time} = \dfrac{\text{ Distance}}{\text{ Speed}}\)
Since the race ends in a tie, we know that Jan and Mary both took the same amount of time to run the race. Let's call this time "t".
For Jan:\(\implies \text{ Time} = \dfrac{\text{ Distance}}{\text{ Speed}}\)
\(\implies t = \dfrac{x - 25}{7.5}\)
For Mary:\(\implies\text{ Time} = \dfrac{\text{ Distance}}{\text{ Speed}}\)
\(\implies t = \dfrac{x}{8.0}\)
Since both expressions represent the same time, we can set them equal to each other and solve for "x":
\(\implies \dfrac{x - 25}{7.5} = \dfrac{x}{8.0}\)
Multiplying both sides by 60 (the least common multiple of 7.5 and 8.0) to get rid of the decimals:
\(\implies 8(x - 25) = 7.5x\)
\(\implies 8x - 200 = 7.5x\)
\(\implies 0.5x = 200\)
\(\implies x = 400\)
\(\therefore\) The length of the race track is 400 meters.
\(\blue{\overline{\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad}}\)
S) a dam has the cross-section of a square with side length of 10m. find the force due to hydrostatic pressure on the dam when the water is 75% of the way up the wall.
The force due to hydrostatic pressure on the dam when the water is 75% of the way up the wall is 735,750 N
The force due to hydrostatic pressure on the dam can be calculated using the formula
P = ρghA
where P is the force, ρ is the density of the water, g is the acceleration due to gravity, h is the height of the water column, and A is the cross-sectional area of the dam.
In this case, the cross-sectional area of the dam is 100 m2 and the height of the water column is 7.5 m (since the water is 75% of the way up the wall, which is a 10m tall wall). Therefore, the force due to hydrostatic pressure on the dam is
P = 1000 kg/m3 x 9.81 m/s2 x 7.5 m x 100 m2
= 735,750 N
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A 100 meter dash was held with 20 contestants. The best time was 10.7 seconds, and the worst time was 15.3 seconds. Only the fastest 10 contestants advance to the final race.
Which measure of central tendency should be used to calculate the cutoff time for the final race?
A.
range
B.
mode
C.
median
D.
mean
The measure of central tendency that should be used to calculate the cutoff time for the final race is the median.
Option C.
What is median?The median is the middle point in a dataset—half of the data points are smaller than the median and half of the data points are larger.
To find the median: Arrange the data points from smallest to largest. If the number of data points is odd, the median is the middle data point in the list.
So from the given data of the 100 meter dash, the measure of central tendency that should be used to calculate the cutoff time for the final race is the median.
The median will help to separate half of the data points that are smaller than the cutoff time and half of the data points are larger than the cutoff time.
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When an airplane communicates with a satellite using a frequency of 1.585×109Hz, the signal received by the satellite is shifted higher by 210 Hz. What is the component of the airplane's velocity toward or away from the satellite?
The component of the airplane's velocity toward or away from the satellite is approximately 39.81 m/s.
When an airplane communicates with a satellite using a frequency of 1.585×10^9 Hz, the signal received by the satellite is shifted higher by 210 Hz. To find the component of the airplane's velocity toward or away from the satellite, we can use the Doppler effect formula:
Δf/f = v/c
Where Δf is the frequency shift (210 Hz), f is the original frequency (1.585×10^9 Hz), v is the component of the airplane's velocity toward or away from the satellite, and c is the speed of light (3.00×10^8 m/s).
Step 1: Plug the values into the formula:
210 Hz / (1.585×10^9 Hz) = v / (3.00×10^8 m/s)
Step 2: Solve for v:
v = (210 Hz / (1.585×10^9 Hz)) * (3.00×10^8 m/s)
Step 3: Calculate the value of v:
v ≈ 39.81 m/s
The component of the airplane's velocity toward or away from the satellite is approximately 39.81 m/s.
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what is the weight of a 45kg box
____ N
The weight of a \(45 kg\) box is \(441.45 N\).
Weight refers to the measure of the force exerted on an object due to the gravitational pull of the Earth.
Given the mass of the box is \(m=45 kg\).
The weight of an object (\(W\)) can be found by multiplying the mass of the object (\(m\)) by the acceleration due to gravity (\(g\)).
So, \(W=mg\).
It is known that acceleration due to gravity, \(g=9.81 m/s^2\).
Hence, the weight of the box, \(W=(45kg)\times (9.81 m/s^2)\).
\(\Rightarrow W=441.45 (kg\cdot m/s^2)\\\Rightarrow W=441.45 N\)
Therefore, the weight of the box is \(441.45 N\).
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Please help me
27. A 20 kg object is at rest. A 6 N force pulls to the right on
the object for 10 seconds.
A) Find the impulse on the object.
B) Find the final momentum of the object.
C) What is its final velocity?
Answer:
a. 60 N*s
b. 60 (kg*m)/s
c. 3 m/s
Explanation:
Givens:
m = 20 kg
v_i = 0 m/s
t = 10 s
F = 6 N
a) Impulse:
I = F*t
I = 6 N*10 s
I = 60 N*s
b) Momentum:
p = v*m
F = m(a)
a = F/m
a = 6 N/20 kg
a = 0.3m/s^2
a = (v_f -v_i)/t
v_f = (0.3 m/s^2)*10 s
v_f = 3.0 m/s
p = 3 m/s*20 kg
p = 60 (kg*m)/s
c. Final velocity
a = (v_f -v_i)/t
v_f = (0.3 m/s^2)*10 s
v_f = 3.0 m/s
The impulse, momentum and final velocity can all be obtained from Newton's second law.
Let us recall that the impulse is obtained as the product of force and time.
Impulse = Force × time
Impulse = 6 N × 10 s = 60 Ns
From Newton's second law of motion;
F.t = mv - mu
Since the object was initially at rest;
F.t = mv
Hence, the final velocity of the object is 60 Kgms-1
The final velocity is obtained from;
F.t = mv
v = F.t/m
v = 6 × 10/20
v = 3 m/s
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approximately what fraction of the earth's crust is sedimentary rock?
Sedimentary rock is one of the three major types of rock found in the Earth's crust, the other two being igneous and metamorphic rocks. Sedimentary rocks are formed from the accumulation and cementation of sedimentary particles, such as sand, silt, and clay, over millions of years.
According to geological studies, sedimentary rocks make up about 75% of the Earth's surface rocks, which account for about 5% of the Earth's crust by volume. The remaining 95% of the Earth's crust is made up of igneous and metamorphic rocks. It is important to note that the thickness and distribution of sedimentary rocks vary widely around the world, and they are not evenly distributed across the Earth's surface. In summary, sedimentary rocks make up a significant fraction of the Earth's surface rocks, but they only account for a small percentage of the Earth's crust by volume.
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the energy transferred by
waves moving through the ground is called
i hope it helped thanks
The velocity of a 48.0 g shell leaving a 2.95 kg rifle is 391. m/s. What is the recoil velocity of the rifle?
Hi there!
\(\large\boxed{ -6.36m/s}\)
Use the equation:
\(v_{2} = -\frac{m_{1}}{m_{2}} v_{1}\)
Where m2 and v2 deal with the larger object, and m1 and v1 with the smaller object. Plug in the given values:
v2 = ?
m1 = 0.048 kg (converted)
m2 = 2.95
v1 = 391
\(v_{2} = -\frac{0.048}{2.95} *391\)
\(v_{2} = -6.36m/s\)
find the odd one out: asteroids on the asteroid belt, a comet, the moon or Saturn
Answer:
Explanation:
A change in an object’s motion—such as Xander speeding up on his scooter—is called acceleration. Acceleration occurs whenever an object is acted upon by an unbalanced force. The greater the net force acting on the object, the greater its acceleration will be, but the mass of the object also affects its acceleration. The smaller its mass is, the greater its acceleration for a given amount of force. Newton’s second law of motion summarizes these relationships. According to this law, the acceleration of an object equals the net force acting on it divided by its mass.
The ability to provide for our needs without damaging Earth's resources is called _______.
A. Acid Rain
B. Sustainability
C. Degradation
D. Pollution
Answer = B
Explanation:
Sustainability is the most appropriate as it means meeting our own needs without compromising the ability of future generations to meet their own needs.
What are some some examples of estimator variables (forensics)
Answer:
Estimator variables are those that cannot be controlled by the criminal justice system. They include simple factors like the lighting when the crime took place or the distance from which the witness saw the perpetrator.
Explanation:
Three resistors of 100, 40.0, and
10.0 Ohms are in series with a
24.0 V power supply. What is the
current in the circuit?
Answer:
0.16 A
Explanation:
V = IRtotal
24V = I(100 + 40 + 10)
I = 0.16 A
Answer: 0.16 is correct
Explanation:
three condensers are connected in series across a 150 volt supply. The voltages across them are 40,50 and 60 volts respectively, and the charge on each condenser is 6×10^-8(a) calculate the capacitance of each condenser (b)calculate the effective capacitance of the combination
Explanation:
Given that,
The voltages across them are 40,50 and 60 volts respectively, and the charge on each condenser is 6×10⁻⁸ C.
(a) Capacitance of capacitor 1,
\(C_1=\dfrac{Q}{V_1}\\\\C_1=\dfrac{6\times 10^{-8}}{40}\\\\C_1=1.5\times 10^{-9}\ F\\\\C_1=1.5\ nF\)
Capacitance of capacitor 2,
\(C_2=\dfrac{Q}{V_2}\\\\C_2=\dfrac{6\times 10^{-8}}{50}\\\\C_2=1.2\times 10^{-9}\ F\\\\C_2=1.2\ nF\)
Capacitance of capacitor 3,
\(C_3=\dfrac{Q}{V_3}\\\\C_3=\dfrac{6\times 10^{-8}}{60}\\\\C_3=1\times 10^{-9}\ F\\\\C_3=1\ nF\)
(b) The equivalent capacitance in series combination is :
\(\dfrac{1}{C}=\dfrac{1}{C_1}+\dfrac{1}{C_2}+\dfrac{1}{C_3}\\\\\dfrac{1}{C}=\dfrac{1}{1.5}+\dfrac{1}{1.2}+\dfrac{1}{1}\\\\C=0.4\ nF\)
Hence, this is the required solution.
Which combination of characteristics produces the LEAST energetic waves?
.
A. short wavelength, low frequency
B. short wavelength, high frequency
C. long wavelength, low frequency
D. long wavelength, high frequency
Answer:
C.
long wavelength, low frequency
Explanation:
The energy of wave depends on the wave frequency and wave amplitude.
The Wave energy can also be determined by wavelength, wave speed, amplitude, water density e.t.c
According to the question that
Which combination of characteristics produces the LEAST energetic waves ?
The correct option will be
C. long wavelength, low frequency
Option C is therefore the correct answer.
Answer:
Explanation:
c
A swimmer is capable of swimming at 1.4m/s in still water. a. How far downstream will he land if he swims directly across a 180m wide river? b. How long will it take him to reach the other side.
Answer:
t = 180 / 1.4 = 129 sec (time to swim horizontally across river)
S = 129 sec * V where V is speed of current and S is the distance he will be carried downstream
The problem does not specify V the speed of the river
Answer:
Explanation:
From the given information:
a) the distance(D) showing how dar downstream he will land can be computed as follows:
Assuming the current of the river = 0.2 m/s
\(D = \dfrac{180 \ m \times 0.2 \ m/s}{1.4 \ m/s}\)
D = 36 m ÷ 1.4
D = 25.71 m
The required time (t) to reach the other side is:
time (t) = 180 m/ 1.4 m/s
time (t) = 128.57 seconds
Calculate acceleration if net force acting on an object is 140N and mass
is 15 kg
Answer:
9.33333333 m / s2
Explanation:
140 N divided by 15 kg
Explain how a thermal cycler help the process of PCR can be used in the identification of a disease pathogen?
A thermal cycler is used in the process of PCR to amplify DNA samples, which can then be used to identify disease pathogens through genetic testing.
PCR, or polymerase chain reaction, is a laboratory technique used to amplify and copy DNA samples. It involves the use of a thermal cycler, which rapidly cycles through different temperatures to facilitate the various steps of the PCR process. The thermal cycler heats and cools the reaction mixture containing the DNA sample and other reagents, causing the DNA to denature, anneal, and elongate in a repeating cycle. Once the DNA has been amplified, it can be used in genetic testing to identify the presence of specific disease pathogens, such as viruses or bacteria, by comparing the amplified DNA sequence to known pathogen sequences.
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friction and normal force are examples of
Answer:
Friction is a force that tends to oppose the relative motion between two bodies in contact. Frictional force always acts on a moving body from the direction opposite to the direction of motion. It opposes the motion, and therefore, helps to reduce the speed of the moving object. It is a contact force.
what is the average acceleration of the horse that slows down from 39.2 mi/h to rest in 8.1 s. express the result in si units.
The average acceleration of the horse is a = - 4.84 m/s².
What is Force?Force is defined as the product of mass of the body and the acceleration with which it is moving. Mathematically → F = maIt is a vector quantity. In the three dimensional coordinate system, the force vector can be resolved as → {F} = F{x} a{x} + F{y} a{y} + F{z} a{z} Mathematically, we can also write force as → F = ma = m(dv/dt)Given is that the horse slows down from 39.2 mi/h to rest in 8.1 s.
We can write the average acceleration as -
a = (0 - 39.2)/8.1
a = - 39.2/8.1
a = - 4.84 m/s²
Therefore, the average acceleration of the horse is a = - 4.84 m/s².
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which of the following statements about energy, systems, and surroundings is not true?the surroundings experience the same energy change as the system in order to keep thetotal energy in the universe constant.the system can be a chemical reaction that occurs in a sample of matter.the surroundings can provide thermal energy to the system.the system can do work on the surroundings.the system is the part of the universe that is the focus of thermochemical study.
While energy conservation is crucial, the energy change experienced by the surroundings and the system can differ depending on the process involved.
It's important to address misconceptions in the study of energy, systems, and surroundings. Among the statements you've mentioned, the one that is not true is:
"The surroundings experience the same energy change as the system in order to keep the total energy in the universe constant."
In reality, the energy change experienced by the surroundings may not be equal to the energy change of the system. The total energy in the universe is conserved, but the distribution of that energy between the system and surroundings can vary. The system, which is the focus of thermochemical study, can be a chemical reaction occurring in a sample of matter. During this process, energy can be transferred between the system and surroundings through work or heat.
The surroundings can indeed provide thermal energy to the system, allowing the system to absorb heat or undergo an endothermic reaction. Conversely, the system can also release thermal energy to the surroundings in an exothermic reaction. Moreover, the system can do work on the surroundings, transferring energy through mechanical means or other types of work.
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