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3241004551 [841]
4 years ago
15

What has more momentum: a sports car moving at 100 mph or a train that is not moving?

Physics
1 answer:
Elan Coil [88]4 years ago
4 0
Well, the Train will have no movement since it is not moving, so a Sports car that is going 100 mph will have Momentum.
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Equipotential lines are usually shown in a manner similar to topographical contour lines, in which the difference in the value o
Anna35 [415]

Answer:

the correct one is 2. the equipotential lines must be closer together where the field has more intensity

Explanation:

The equipotential line concept is a line or surface where a test charge can move without doing work, therefore the potential in this line is constant and they are perpendicular to the electric field lines.

In this exercise we have a charge and a series of equipotential lines, if this is a point charge the lines are circles around the charge, where the potential is given by

           V = k q / r

also the electric field and the electuary potential are related

           E =  - \frac{dV}{dr}

therefore the equipotential lines must be closer together where the field has more intensity

When checking the answers, the correct one is 2

3 0
3 years ago
A 55- kg woman has a momentum of 220 kg.m/s. What is her velocity?
exis [7]

Answer:

P=mv

Momentum=mass*velocity

Mass=55kg

Velocity=?

Momentum=220kg.m/s

P=mv

v=p/m

v=220/30

v=7.33m/s

Explanation:

6 0
3 years ago
10. A skydiver falls with acceleration due to gravity of 9.81 mlsls.
svetlana [45]

Explanation:

using the first eqn for motion

5 0
3 years ago
Please help me do this. Study the scenario.
dem82 [27]

The mechanical advantage of the lever is 3 and the right option is A.) 3.

<h3>What is mechanical advantage?</h3>

Mechanical advantage can be defined as the ratio of load to effort in a machine.

To calculate the mechanical advantage of the lever, we use the formula below.

Formula

  • M.A = y/x................ Equation 1

Where:

  • M.A = mechanical advantage of the lever
  • y = distance moved by effort (input arm)
  • x = distance moved by load (output arm)

From the question,

Given:

  • y = 3 m
  • x = 1 m

Substitute these values into equation 1

  • M.A = 3/1
  • M.A = 3.

Hence, The mechanical advantage of the lever is 3 and the right option is A.) 3.

Learn more about mechanical advantage here: brainly.com/question/19038908

8 0
3 years ago
When a light bulb is connected to a 4.5 V battery, a current of 0.16 A passes through the bulb filament. What is the resistance
larisa [96]

Answer:

R = 28.125 ohms

Explanation:

Given that,

The voltage of a bulb, V = 4.5 V

Current, I = 0.16 A

We need to find the resistance of the filament. Using Ohm's law,

V = IR

Where

R is the resistance of the filament

So,

R=\dfrac{V}{I}\\\\R=\dfrac{4.5}{0.16}\\\\R=28.125\ \Omega

So, the resistance of the filament is equal to 28.125 ohms.

5 0
3 years ago
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