4 years ago

How much farther from the charge is the 2000 v equipotential surface than the 3000 v surface?

Physics

1 answer:

olganol [36]4 years ago

7 0

Answer:

r1 -r2 = 3.75cm

Explanation:

Check the attached file for the solution

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You are designing a ski jump ramp for the next Winter Olympics. You need to calculate the vertical height h from the starting ga

Evgen [1.6K]

Answer:

h = 40.37 m

Explanation:

We will apply the law of conservation of energy to the skier in this case, as follows:

$Energy\ of\ skier\ at\ the\ gate = Energy\ of\ Skier\ at\ the\ end\\P.E + K.E_{i} = K.E_{f} - W_{friction}\\mgh + \frac{1}{2}mv_{i}^2 = \frac{1}{2}mv_{f}^2 - W_{friction}\\\\mgh = \frac{1}{2}m(v_{f}^2-v_{i}^2) - W_{friction}$

where,

m = mass of skier = 77 kg

g = acceleration due to gravity = 9.81 m/s²

vf = final speed = 30 m/s

vi = initial speed = 2 m/s

W_friction = Work done by friction and air resistance = 4000 J

Therefore,

$(77\ kg)(9.81\ m/s^2)h = \frac{1}{2}(77\ kg)[(30\ m/s)^2-(2\ m/s)^2] - 4000\ J\\\\h = \frac{34496\ J - 4000\ J}{755.37\ N}\\\\$

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3 years ago

The measurement of how much matter an object contains is its

Ket [755]

Answer:

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4 years ago

An olympic swimmer swims 2.22 m/s. how long would it take the swimmer to swim 50 meters.

miss Akunina [59]

About 22.5 seconds.

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4 years ago

You're reading an article about forest fires in california and it features a photograph of firefighters battling a fire on a hil

Lelechka [254]

I will say it is about 20 m/s