Answer:
It makes it lighter when its closer and heavier when its farther way.
Explanation:
The object's speed will remain constant after the it leaves his hand.
So will HIS speed in the opposite direction.
Answer:
Explanation:
According to first law of thermodynamics:
∆U= q + w
= 10kj+(-70kJ)
-60kJ
, w = + 70 kJ
(work done on the system is positive)
q = -10kJ ( heat is given out, so negative)
∆U = -10 + (+70) = +60 kJ
Thus, the internal energy of the system decreases by 60 kJ.
Wrapping in insulated wire around a medal with ferromagnetic properties and applying an electric current
