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Ket [755]
3 years ago
10

An ice skater is moving in a circle at a constant speed. Which of the following best explains the forces acting on the ice skate

r.
Please give answer I’ll give brainiest



A. Ice skater is moving so the forces acting on her must be unbalanced

B.the ice skater has a constant speed so the forces acting on her must be unbalanced

C. The ice skater had a changing cellos the forces acting on her must be unbalanced

D.not enough information to answer the question
Physics
1 answer:
dangina [55]3 years ago
7 0
B because the skater is constantly moving in the same speed to go in a circle .
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The layer of earth that has the lightest elements is the
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3 years ago
A child’s toy that is made to shoot ping pong balls consists of a tube, a spring (k = 18 N/m) and a catch for the spring that ca
UkoKoshka [18]

Answer:

The height is 3.1m

Explanation:

Here we have a conservation of energy problem, we have a conversion form eslastic potencial  energy to gravitational potencial energy, so:

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then we have only gravitational potencial energy when the ball is at its maximun height.

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because all the energy was transformed Eg=Ee

h=\frac{0.081J}{9.8m/s^2*m}

searching the web, the mass of a ping pong ball is 2.7 gr in average. so:

h=\frac{0.081J}{9.8m/s^2*(2.7*10^{-3}kg)}\\h=3.1m

6 0
3 years ago
A wave traveling in water has a frequency of 250 Hz and a wavelength of 6.0m. What is the speed of the wave?
vladimir2022 [97]
Since you are looking for the speed, you need to rearrange the formula which is f = speed / wavelength. That should give you speed = f (wavelength.) All you need to do next is to substitute the value to the following equation.  speed = 250 Hz (6.0m) that should leave you with 1500 m/s which is very fast.
6 0
3 years ago
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