By adding up all the individual forces of the object
Answer:
C
Explanation:
If a pulley system has an efficiency of 74.2%, then only that fraction of the work performed will be useful. 74.2%=0.742. 0.742*200 is about 148J. Hope this helps!
Answer:
Three, the liquid in the man's cup, the stove is solid, and the air around them is a gas
Explanation:
Temperature doesn't do anything, the boiling point of stuff decreases. If you put water in a vacuum chainber then it will start to boil
Answer:
an astronomer studies planets, stars, moons, etc, or objects that are outside the field of Earth.
