Exposure to high energy electromagnetic radiation such as waves can cause cancer sterility and death
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The combined mass of Danny+skateboard is 72.5 kg
Explanation:
We can solve the problem by using Newton's second law of motion:
where:
F is the net force applied on Danny and the skateboard
m is the mass of Danny+skateboard
a is the acceleration
Here we have the following data:
F = 29 N is the force applied
is the acceleration of Danny and the skateboard
Solving for m, we find their combined mass:
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The net force acting on the box of mass 1.75kg when it is pushed across a ground with coefficient of friction k=0.267 with a force of 8.35N, is 3.77N.
To find the answer, we have to know more about the basic forces acting on a body.
<h3>How to find the net force on the box?</h3>- Let us draw the free body diagram of the given box with the data's given in the question.
- From the diagram, we get,
where, N is the normal reaction, mg is the weight of the box, is the net force, f is the kinetic friction.
- We have the expression for kinetic friction as,
- Thus, the net force will be,
Thus, we can conclude that, the net force acting on the box of mass 1.75kg when it is pushed across a ground with coefficient of friction k=0.267 with a force of 8.35N, is 3.77N.
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Answer:
Explanation:
Given
Distance between source and receiver
Sound Intensity
Distance of of second observer
Intensity varies as
using this