The unit of power is called Watts.
1 way to calculate power is to divide Energy (in joules) by Time (in seconds)
Convert 4kJ to J by multiplying 4x1000
J = 4000
W = E/t
W = 4000J / 0.5s
W = 8000
Electro produced 8000 watts.
Answer:D. Watching the left-over dirt from a comet burn up by friction as the pieces hit the Earth's atmosphere
Explanation: A meteor shower is giant rocks moving across the sky
Explanation:
When there is no change in chemical composition of a substance then it is known as physical change.
When we say that mass is conserved during a physical change then it means that total mass of the substance or object will remain the same from beginning till the end.
For example, a metal box of mass 20 grams is beaten with hammer. Its shape will change which is a physical change and after beaten with the hammer its mass still remains 20 grams.
For any object to move at a constant velocity, the net force acting on the object must be ZERO.
