1) <span> What is heat? the answer is B because heat is a form of energy</span>
Answer:
0.28 ft
Explanation:
We are given that
Strength=m=
Distance between source and sink=15 ft
Distance between the sink of the source and origin=
ft
Uniform velocity, U=12 ft/s
We have to find the length of the oval.
Formula to find the half length of the body

Where a=Distance between sink of source and origin
U=Uniform velocity
m=Strength
l=Half length
Using the formula



Length of oval=
Answer:3.67 s
Explanation:
Given
Ball is thrown with an initial velocity of 
As the ball moves upward it experience a declaration due to gravity which will slow down the ball
using

where v=final velocity
u=initial velocity
a=acceleration
t=time
Here 



Explanation:
Mass of the ball, m = 0.058 kg
Initial speed of the ball, u = 11 m/s
Final speed of the ball, v = -11 m/s (negative as it rebounds)
Time, t = 2.1 s
(a) Let F is the average force exerted on the wall. It is given by :


F = 0.607 N
(b) Area of wall, 
Let P is the average pressure on that area. It is given by :


P = 0.202 Pa
Hence, this is the required solution.