Where would a roller coaster have the same speed
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not sure on what to write in the blank spots.
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Answer:
Explanation:
I hope this was all you wanted. Everything else seems finished correctly.
The coach of the Philadelphia Eagles walks back and forth along the sidelines of Lincoln Financial Field fifteen times in three minutes. What is the frequency of his pacing? Remember to change the time to seconds.
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Plz make Brainly list
A 0.50-μF and a 1.4-μF capacitor (C1 and C2, respectively) are connected in series to a 7.0-V battery. A) Calculate the potential difference across each capacitor B) Calculate the charge on each capacitor C) Calculate the potential difference across each capacitor assuming the two capacitors are in parallel. D) Calculate the charge on each capacitor assuming the two capacitors are in parallel.
a. Calculate the potential difference across each capacitor.
b .Calculate the charge on each capasitor.
c. Calculate the potential difference across each capacitor assuming the two capacitors are in parallel.
d. Calculate the charge on each capasitor assuming the two capacitors are in parallel.
Answers
A 0.50-μF and a 1.4-μF capacitor (C1 and C2, respectively) are connected in series to a 7.0-V battery. For both capacitors: Q = CeqV = 1.9 μF × 7.0 V = 13.3 μC
a) The potential difference across each capacitor can be calculated using the formula V = Q/C, where V is the potential difference, Q is the charge on the capacitor, and C is the capacitance. Since the capacitors are connected in series, the charge on both capacitors will be the same. Therefore, we can use the formula V = Q/C1 and V = Q/C2 to calculate the potential difference across each capacitor.
For C1: V = Q/C1 = 7.0 V/0.50 μF = 14 μV
For C2: V = Q/C2 = 7.0 V/1.4 μF = 5 μV
b) The charge on each capacitor can be calculated using the formula Q = CV, where Q is the charge, C is the capacitance, and V is the potential difference. Using the potential differences calculated above, we can find the charge on each capacitor.
For C1: Q = C1V = 0.50 μF × 14 μV = 7.0 μC
For C2: Q = C2V = 1.4 μF × 5 μV = 7.0 μC
c) Assuming the capacitors are in parallel, the equivalent capacitance (Ceq) can be calculated using the formula Ceq = C1 + C2 = 0.50 μF + 1.4 μF = 1.9 μF. The potential difference across both capacitors will be the same and equal to the potential difference of the battery, which is 7.0 V. Therefore, the potential difference across each capacitor will be:
V1 = V2 = V = 7.0 V
d) The charge on each capacitor can be calculated using the formula Q = CV, where C is the equivalent capacitance and V is the potential difference across the capacitors.
For both capacitors: Q = CeqV = 1.9 μF × 7.0 V = 13.3 μC
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What type of muscular assessment is the bench press
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upper body muscular strength
Answer:
Explanation:
muscular strength test
Fill in the data tables constant=10 HELP!!!
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just substitute whatever number is in the x column for x in the equation, then whatever you get from that equation is the y value
A pen cap floats in a plastic lemonade 3/4 full of water vif you squeeze the bottle the pen cap sinks to the bottom if you then let go of the bottle the pen cap floats to the surfce whe the bottle squeezed what ,if anything happens to the distance between the air molecules inside the bottle????????/
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Answer:
The pressure of the air molecules inside the pen cap increases and the volume occupied by the air decreases such that the combined volume occupied by the pen cap and the air volume reduces while the combined mass of the pen cap and the air molecules remain the same
Given that density = The mass/Volume, we have that the density varies inversely as the volume, and as the volume reduces, the density increases
Upon squeezing, therefore, as the new combined density of the pen cap and the air molecules rises to more than the density of the water in the bottle, then, the pen cap air molecule is relatively more denser than the water, which will result in the pen cap sinking to the bottom of the bottle
Explanation:
Q.7. For a system with a transfer function of G(s)=- co² s² +2a+w² if the natural frequency is 0.5 and the damping ratio is 1.3, which of the following statements is correct regarding the unit step response of the system?
O A) Damped
O B) Undamped
O C) Underdamped
O D) Crittically Damped
O E) Overdamped
Answers
The system described by the transfer function G(s) = -co² s² + 2a + w², with a damping ratio of 1.3 and a natural frequency of 0.5, has an overdamped unit step response. So, the correct option is (E)
The transfer function of the system is given as G(s) = -co² s² + 2a + w², where co represents the damping ratio, a represents an arbitrary constant, and w represents the natural frequency of the system. We are given that the natural frequency is 0.5 and the damping ratio is 1.3.
To determine the type of unit step response, we need to analyze the damping ratio (co) in relation to the critical damping value (co_critical).
The critical damping ratio (co_critical) is defined as the value where the system is on the threshold between being overdamped and underdamped. It is given by the formula co_critical = 2 * sqrt(a * w²).
In our case, the natural frequency (w) is 0.5, so we can calculate co_critical as follows: co_critical = 2 * sqrt(a * 0.5²).
Since the damping ratio (co) is given as 1.3, we can compare it with co_critical to determine the type of unit step response.
If co > co_critical, the system is considered overdamped (Option E).
If co = co_critical, the system is considered critically damped (Option D).
If co < co_critical, the system is considered underdamped (Option C).
Based on the given values, we can determine that the system is overdamped (Option E) because the damping ratio (1.3) is greater than the critical damping ratio.
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How far has a ball traveled after 3.6 seconds when thrown downward at a
velocity 3.75 m/s?
Answers
ball traveled 13.5 m/s after 3.6 seconds
Explanation:
u=3.75m/s, t=3.6s, g=9.8m/s².
Therefore, according to the formula,
S=ut+½gt².
S=(3.75×3.6)+½×9.8×(3.6)²
S= 13.5+63.504
S= 77.004m (approximately 77 m)
therefore the distance traveled by the ball is 77m.
hope this helps you
If the current through a resistor is tripled, how does the power dissipated by
the resistor change?
Answers
If the current that is circuit is tripled, the power is increased by a factor of 9. Option D
What is power?The term power refers to the rate of doing work. Now if we have to obtain the work done by the use of the formula; P = I^2R
Now if the current that is circuit is tripled, the power is now obtained by;
P = (3I)^2R = 9I^2R hence the power is increased by a factor of 9.
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if the resulting potential difference between the two conductors is 420 v, what is the capacitance, in nanofarads, of the cable?
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The the capacitance of the cable is 18 nF, when the resulting potential difference between the two conductors is 420 V.
The capacitance of a cable is 125 nF when the resulting potential difference between the two conductors is 60 V. If the resulting potential difference between the two conductors is 420 V, what is the capacitance, in nanofarads, of the cable
Given:
Capacitance, C = 125 nF
Initial potential difference, V1 = 60 V
Final potential difference, V2 = 420 V
To find:
The capacitance of the cable is given by the formula:
Capacitance, C = (Charge, Q) / (Potential difference, V)
Or,
Charge, Q = C × V
We know that,
Charge, Q1 = C × V1
Charge, Q2 = C × V2
If we divide Q2 by Q1, then we get:
C × V2 / C × V1
= Q2 / Q1
Or,
C × V2 / C × V1 = (Final charge) / (Initial charge)
From the principle of conservation of charge, we know that:
Charge cannot be created or destroyed; it can only be transferred from one place to another.
Therefore, the initial charge and final charge are the same.
So, we can say that:
Charge, Q2 = Charge, Q1
Hence, C × V2 = C × V1
Or,
C = V1 / V2 × C1
Substituting the values, we get:
C = 60 V / 420 V × 125nF
= 18 nF (approximately)
Therefore, the capacitance of the cable is 18 nF, when the resulting potential difference between the two conductors is 420 V.
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Which gloves are safe for working with electricity?
Answers
Nitrile Gloves gloves are safe for working with electricity.
What are Nitrile Gloves?A synthetic rubber made from acrylonitrile and butadiene, nitrile rubber is also referred to as nitrile butadiene rubber, NBR, Buna-N, and acrylonitrile butadiene rubber. Trade names like Perbunan, Nipol, Krynac, and Europrene are also used. Being resistant to chemicals, fuel, and oil makes this rubber special.
What is a nitrile glove used for?These gloves are therefore the best option for anyone who must handle potentially dangerous and caustic chemicals. Being incredibly puncture-resistant and removing the possibility of latex allergic reactions, they are also ideal for the majority of medical settings.
Is nitrile safe on skin?The robust barrier of protection provided by nitrile gloves can help keep the wearer safe from chemicals, acids, and oils. Latex-free: Nitrile gloves are excellent for anyone with sensitive skin or a latex allergy because they are latex-free, unlike natural rubber gloves.
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H is a chemical (blank) and H2 is a chemical (blank)
Please I need help!
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Answer:
"H" is a chemical symbol and "H2" is chemical formula.
Why do cells have receptors? Receptors make mRNA. Receptors let the cell know when to let things in and out of the cell. Receptors make spike proteins.
Answers
Answer: Cells have receptors because Receptors let the cell know when to let things in and out of the cell.
Explanation:
Cell receptors also called transmembrane receptors are proteins located on the surface of a cell (extracellularly) or inside the cell which receive signals that alters the functions of the cell. The functions of the cells which can be altered includes the alteration in gene transcription and the cell morphology.
Cell receptors are generally categorizes into the following groups:
--> Internal receptors
--> cell surface receptors
--> ion channel receptors
--> G protein coupled receptors
--> enzyme linked receptors
Interaction of cell membrane receptors with specific ligands that bonds to the receptors causes conformational changes in the receptor protein. This in turn, enzymatically activates the intracellular part of the protein or induces interactions between the receptor and the proteins in the cytoplasm that act as second messengers, thereby relaying the signal from the extracellular part of the receptor to the interior of the cell. This enables the cell to know when to let things in or out of it through the information conveyed.
A ball is thrown horizontally at a height of 1.6 metres above the ground, with initialspeed 14 m s^-1a)Find the time of flight of the ball, giving the answer as a fraction.b)Find the range of the ball.
Answers
Given:
The initial height of the ball, h=1.6 m
The initial speed of the ball, u=14 m/s
To find:
a) The time of flight of the ball.
b) The range of the ball.
Explanation:
As the ball is thrown horizontally, the ball will have no vertical component of the initial velocity. The velocity of the ball is completely horizontal.
Thus the vertical component of the initial velocity of the ball is u_y=0 m/s.
The horizontal component of the initial velocity of the ball is u_x=u=14 m/s.
a)
From the equation of motion,
\(h=u_yt+\frac{1}{2}gt^2\)Where g is the acceleration due to gravity and t is the time of flight of the ball.
On substituting the known values,
\(\begin{gathered} 1.6=0+\frac{1}{2}\times9.8\times t^2 \\ \implies t=\sqrt{\frac{2\times1.6}{9.8}} \\ =0.57\text{ s} \end{gathered}\)b)
The range of the ball is given by,
\(R=u_xt\)On substituting the known values,
\(\begin{gathered} R=14\times0.57 \\ =7.98\text{ m} \end{gathered}\)Final answer:
a) The time of flight of the ball is 0.57 s
b) The range of the ball is 7.98 m
The graph above shows the motion of two runners in a race. Which runner was moving faster? How do you know?
A
Kathy is moving faster because the slope of her line is steeper.
B
Rachel is moving faster because the slope of her line is steeper.
C
Kathy is moving faster because the slope of her line is less steep.
D
Rachel is moving faster because the slope of her line is less steep.
Answers
Based on the data, we can infer that Rachel is moving faster because the slope of her line is steeper (option B).
How to identify the runner who was going faster?To identify the runner who was going faster we must take into account the information in the graph. In this case, Rachel's line shows that she has covered more distance in less time than Kathy.
Therefore, Rachel's line is steeper than Kathy's. In this case, Kathy has taken about 70 minutes to cover 7 kilometers. While Rachel has taken 50 minutes to travel about 90 km.
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In the diagram below, what is the potential difference across the 3.0-ohm resistor?
Answers
Answer:
3V
Explanation:
From the question given above, we can see clearly that the resistors are arranged in parallel connection. Hence, the same voltage will pass through the resistors i.e
Total voltage = voltage of 3 Ω = voltage of 6 Ω
From the question given above,
The total voltage = 3 V
Therefore,
Voltage of 3 Ω = total voltage
Voltage of 3 Ω = 3V
Thus, option 3 gives the correct answer to the question.
1. Two magnets are placed on a table, and they immediately move to attach to each other. Which statement is correct about the energies in the system?
Kinetic energy is at its peak when the magnets are first released, then it decreases steadily. Energy stored in the magnetic field becomes zero.
The kinetic energy of the system is derived from the thermal energy created by increased velocity. Energy stored in the magnetic field does not change.
Kinetic energy and velocity are at zero when the magnets are held apart, and both increase rapidly when they are released and move together. Energy stored in the magnetic field decreases.
The velocity and kinetic energy of the system increase as the energy stored in the magnetic field increases.
2. Two magnets are placed on a table, and they immediately move to attach to each other. Which statement is correct about the energies in the system?
The energy stored in the system is converted to kinetic and thermal energy.
The energy stored in the system is converted to kinetic energy.
The energy stored in the system is converted to kinetic, thermal, and sound energy.
The energy stored in the system is converted to thermal and sound energy.
3. A magnet is moved close to a rubber band. How does the energy stored in the magnetic field change?
The energy stored in the magnetic field increases.
The energy stored in the magnetic first increases and then decreases.
The energy stored in the magnetic field does not change.
The energy stored in the magnetic field decreases.
4. Two donut-shaped magnets are stacked on top of each other with a wooden dowel in the center. The south poles of the magnets are facing each other. Once the upper magnet is released, it accelerates downward and stops 1 cm above the lower magnet. How does the energy stored in the magnetic field change?
All of the energy stored is converted into kinetic, thermal, and gravitational energy.
Some of the energy stored is converted into kinetic, thermal, and gravitational energy.
All of the energy stored is converted into kinetic and thermal energy.
Some of the energy stored is converted into kinetic and thermal energy.
Answers
According to the law of conservation of energy, energy can neither be created nor destroyed but is transformed from one form to another.
1) The statement that is true about the magnets involved is that; "kinetic energy and velocity are at zero when the magnets are held apart, and both increase rapidly when they are released and move together. Energy stored in the magnetic field decreases."
2) In the second question, the statement that is correct about the energies of the system is that the energy stored in the system is converted to kinetic energy.
3) When a magnet is moved close to a rubber band, the energy stored in the magnetic field does not change.
4) In the fourth question, some of the energy stored is converted into kinetic, thermal, and gravitational energy.
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Answer:the correct answer is: the energy stored in the system is converted to kinetic, thermal and sound energy
Explanation:
The elements least likely to form bonds are found in which group?
15
ООО
16
O 18
Answers
Answer:
It would be O 18
A researcher releases a weather balloon to study the atmosphere. The air temperature on the ground is 27 degrees. If the sensors read an air temperature of 17 degrees, then how far up has the balloon traveled?
Answers
Answer:- Input for computer-based weather prediction models;
- Local severe storm, aviation, fire weather, and marine forecasts;
- Weather and climate change research;
- Input for air pollution models;
- Ground truth for satellite data
Explanation:
which number is larger value : 5.6*10^23 or 8.9*10^6
Need Help
Answers
Answer:
5.6*10^23. if 10^n is greater, that means its the larger value. hope dis helps
Explanation:
Two kg ice block is floating in water. What force is needed to push the ice block down so it is just submerged in water? Density of ice is 917 kg/m3; density of water is 1000 kg/m3.
Answers
The force needed to push the ice block down so it is just submerged in water is 19.6 N, which is equal to the weight of the ice block.
When an object is floating in a fluid, it displaces a volume of fluid equal to its volume. In this case, the ice block has a density of 917 kg/m³, which is less than the density of water (1000 kg/m³). Since the ice block is floating, it displaces its weight in water, which is equal to the force required to submerge it.
The weight of the ice block can be calculated using its mass (2 kg) and the acceleration due to gravity (9.8 m/s²). The weight is given by the equation weight = mass × gravity, which gives us weight = 2 kg × 9.8 m/s² = 19.6 N.
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the indiscriminate use of drugs without the doctor's prescription is called
Answers
Answer:
drug misuse
Explanation:
this is because the person is using those drugs but indiscriminately meaning without correct judgement or in this context without a prescription therefore without following guidelines and legal standards eg self medication
but it is not abuse because it is being used for its intended purpose just without any guidelines
A wave has a wavelength of 4 m and a frequency of 85 Hz. What is the speed of this wave?
Answers
The speed of wave with a wavelength of 4 m and a frequency of 85 Hz is 340m/s
The speed of a wave is the product of the frequency of the wave and its wavelength. Mathematically, it is expressed as:
\(v = f \lambda\) where:
f is the frequency
\(\lambda\) is the wavelength
Given the following:
f =85Hz
\(\lambda\) = 4 m
Substitute the given parameter into the formula:
v = 85 × 4
v = 340m/s
Hence the speed of wave with a wavelength of 4 m and a frequency of 85 Hz is 340m/s
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True or False. A material with randomly oriented atoms is magnetic.
Answers
Answer:true
Explanation:
because atoms is what makes it able for things to be picked up
Answer:
false
Explanation:
just had it on my quiz
A 100 kg box is on an incline of 60°
What is the frictional force if the coefficient of friction is .2?
Answers
If the coefficient of friction is.2, the frictional force is 100 N.
The resistive force of friction (Fr) divided by the normal or perpendicular force (N) pushing the objects together yields the coefficient of friction (fr), which is a numerical value. The formula fr = Fr/N serves as a representation of it.
F = N is the equation for frictional force. Let's use the 2-kg block of wood that is resting on a table to be pushed from rest as an example. The static friction coefficient is taken into account in this situation. The static coefficient of wood is 0.5.
Calculation:F = μN
F = 2 × 100 ×cos60°
F = 200 × 1/2
F = 100 N
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If a vehicle is moving at a constant speed of 60 miles per hour, how many miles will it travel in 1 hour and 20 minutes?.
Answers
The vehicle will travel a total of 80 miles in 1 hour and 20 minutes.
The vehicle is moving at a constant speed of 60 miles per hour.
It means that in one hour, the vehicle travels 60 miles.
So, we can write,
Miles travelled in hour = 60
Miles travelled in one minute = 60/60
Miles travelled in one minute = 1 mile
Total time given is 1 hours and 20 minutes.
1 hours = 60 minutes,
Hence, total time = 60+20
Total time = 80 minutes.
So, the distance travelled in 80 minutes = 80 x 80 miles,
Miles travelled in 80 minutes = 80 miles/
So, the vehicle travelled 80 miles in 1 hour and 20 minutes.
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5. A 5 kg object is pushed along a rough surface. The applied force is 75 N and the friction forceis 10 N. What is the net force acting on the object? What is the acceleration caused by the netforce?
Answers
We have to use Newton's Second Law, knowing that the friction force is
\(F_{\mu}=-mg\mu\)Then,
\(F-mg\mu=ma\)Because the friction force is against the movement.
We know that m = 5kg, F = 75N, friction = 10.
\(75-10=5\cdot a\)Let's solve for a
\(\begin{gathered} \frac{65}{5}=a \\ a=13m/s^2 \end{gathered}\)The acceleration is 13 meters per square second.
Also, the force acting on the object is 65N because we have a net force present there.
Why are the largest craters we find on the Moon and Mercury so much larger than the largest craters we find on the Earth
Answers
Answer:
Because Moon and Mars has no atmosphere.
Explanation:
Moon and Mars has no atmosphere, so there is no friction on the falling object due to the atmosphere. The speed of the falling object is more at Moon and Mars.
When a small object impact on the surface of moon or Mars with high speed, the size of crater is large than the earth as out earth has atmosphere.
When air is heated its density________
compared to the surrounding air, and this causes the heated air to_______
A increases, sink
B. increases, rise
C. decreases, rise
D. decreases, sink
Answers
Answer:
B
Explanation:
It becomes lighter so it rises
Classify the phase-change scenarios according to the direction of the heat flow in each case. No net transfer of heat occurs Heat is transferred from the water to the surroundings Heat is transferred to the water from the surroundings
Answers
When working through these problems, think about the heat in terms of movement of the molecules of water.
Heat is transferred from the water to the surroundings --- water molecules slowing down.
Heat is transferred to the water from the surroundings --- water molecules heating up.
a cloud of steam condenses into liquid water - Heat is transferred from the water to the surroundings. Steam has more molecules moving around than liquid water. Therefore the molecules had to slow down, thereby transferring heat to the surroundings.a block of ice sublimates into water vapor - Heat is transferred to the water from the surroundings --- water molecules are heating upa block of ice melts - Heat is transferred to the water from the surroundings. The water molecules are basically not moving. Therefore heat has to be introduced to the molecules, which causes the melting.a puddle of water evaporates - Heat is transferred to the water from the surroundings. The water molecules are moving in the liquid state. However, when more heat is introduced to the liquid, the molecules move more rapidly and evaporate.a puddle of water freezes into ice - Heat is transferred from the water to the surroundings --- water molecules slowing down as they go from a liquid state to a solid state. ABOUT HEAT TRANSFERHeat transfer is the transfer of energy due to the difference of temperature between two different places. The main discussion in heat transfer is how the energy in heat can move places and the rate of transfer under certain conditions. Heat transfer includes the processes of inflow and outflow of heat. In industrial processes, heat transfer is used to achieve the required temperature in the industrial process and maintain the required temperature throughout the process.
Heat transfer from one object to another can occur by conduction, convection, and radiation. The determinant of heat transfer is the temperature difference. The direction of heat transfer starts from a medium with a high temperature to a medium with a lower temperature. Heat transfer can occur with a single process or multiple processes.
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