Answer:
40.68 trillion kilometers.
Explanation:
Multiply 4.3 × 9.46, the product which you get is your answer in trillion km
I cannot see all the questions, what is 18,19 and 21? (:
Complete Question
The complete question is shown on the first uploaded image
Answer:
the change in energy of the block due to friction is
Explanation:
From the question we are told that
The frictional force is
The mass of the block is
The length of the ramp is
The height of the block is
The change in energy of the block due to friction is mathematically represented as
The negative sign is to show that the frictional force is acting against the direction of the block movement
Now substituting values
Only an alteration in the properties of the medium will cause a change in the speed.