Answer:
(1) - (2)
and
(3) - (4)
Explanation:
Hi!
The Newton's third law states that for every action there's and equal and opposite reaction.
Lets us consider the first force:
<em>(1) the force of the horse pulling on the cart</em>
Therefore, its counterpart, will be a force of the cart pulling on the horse, which is actually:
<em> (2) the force of the cart pulling on the horse</em>
<em />
Analogously, the third force:
<em>(3) the force of the horse pushing on the road</em>
and the fourth force:
<em>(4) the force of the road pushing on the horse </em>
<em />
From a action reaction pair, since the former force acts on the road by the horse, and the latter on the horse by the road
Answer:
The amount of heat transfer is 21,000J .
Explanation:
The equation form of thermodynamics is,
ΔQ=ΔU+W
Here, ΔQ is the heat transferred, ΔU is the change in internal energy, and W is the work done.
Substitute 0 J for W and 0 J for ΔU
ΔQ = 0J+0J
ΔQ = 0J
The change in internal energy is equal to zero because the temperature changes of the house didn’t change. The work done is zero because the volume did not change
The heat transfer is,
ΔQ=Q (in
) −Q (out
)
Substitute 19000 J + 2000 J for Q(in) and 0 J for Q(out)
ΔQ=(19000J+2000J)−(0J)
=21,000J
Thus, the amount of heat transfer is 21,000J .
Answer:
10.1 N
Explanation:
Your answer is 10.1 N, I don't actually know how to do it but I hope it helps.
Scenes the chair wheels are up the person is rolling backwards and if the wheels were down then the person would go forwards
<span />
Answer:
a) 
b) The second runner will win
c) d = 10.54m
Explanation:
For part (a):
For part (b) we will calculate the amount of time that takes both runners to cross the finish line:
Since it takes less time to the second runner to cross the finish line, we can say the she won the race.
For part (c), we know how much time it takes the second runner to win, so we just need the position of the first runner in that moment:
X1 = V1*t2 = 239.46m Since the finish line was 250m away:
d = 250m - 239.46m = 10.54m
