Decibels I believe? I’m not 100% sure
Answer:
252J
Explanation:
Given parameters:
Distance = 72m
Force = 3.5N
Unknown:
Work done on the house = ?
Solution:
Work done is the force applied to move a body through a particular distance.
Work done = Force x distance
Now insert the parameters and solve;
Work done = 3.5 x 72 = 252J
This is called the perihelion.
Your list that you call "the following properties" is awfully short. / / / The displayed value tells you the car's speed relative to the pavement. (NOT its velocity.)
Answer:
-4892 J
Explanation:
The work done by friction is equal to the difference in mechanical energy of the car between the bottom of the loop (point A) and the top of the loop (point B).
The mechanical energy of the car at point A is

where
is the mass of the car
is the speed at point A
is the height of the car at point A (zero because it is at the bottom of the loop)
Substituting into the equation, we find

The mechanical energy of the car at point B is

where
is the mass of the car
is the speed at point B
(twice the radius) is the height of the car at point B, at the top of the loop
Substituting into the equation, we find

So, the work done by friction is

And the work is negative because it is done against the motion of the car.