Answer:
Explanation:
A. And B. solutions are in the attachment.
C.
When the cockroach walks towards the center of the circle, positive work is done so kinetic energy increases.
Force = (mass) x (acceleration)
= (2 kg) x (20 m/s²) = 40 newtons .
about 9 pounds .
Note: The ball can only accelerate during the short time
that the clubface is in contact with it. Once it leaves the
clubface, it can't accelerate any more.
Also ... that's one heckuva golf ball. It weighs about 4.4 pounds !
well igneous rock and metamorphic rock
Answer:
The change of energy is 60J
Explanation:
We have a closed system, which receives 80 J of energy. It means this energy is entering the system. And also we have 20 J that is dissipating in the shape of heat.
Therefore the amount remaining in the system will be 80 - 20 = 60 J
Answer:
Blue Lighting
Explanation:
In order to make red look black, you must use blue light. The blue would be absorbed and there would be no red light to reflect.