Answer:
A.) Coolant absorbs thermal energy
Explanation:
Answer:
Atoms distance is reduced .
Explanation:
In liquids atoms locate themselves relatively at more distance as compared to solids. When energy is extracted out of liquids and atoms are left to come closer they arrange themselves at shorter distance and solidify .
We can first obtain time of flight from vertical fall
Initial velocity U=0, d = 6 m, a = 9.8 m/s²
d = ut + 1/2 at²
6.0 = 0 + (1/2 × 9.80 t²)
t = √(12/9.8)
= 1.106 sec
Horizontal velocity = Vh = Dh/t
= 24.0 /1.106 s
= 21.69 m/s
The ball was thrown at a speed of 21.69 m/s
Answer:
(c) a baseball that is caught and then thrown back
Explanation:
The case when the baseball is caught and thrown back undergoes the maximum change in the momentum of the ball. The ball in this case reverts its direction of velocity therefore the velocity becomes opposite of what it was earlier and being a vector quantity it has a change in sign and hence the difference between the final and the initial values is largest than the cases in which one of the velocity is zero.
Explanation:
Approximately 5.9. Using Q=IT then T=Q/I so T=48/8.2=5.8536585366 Hope this helps
