resistor. Current throgh resistor generates "heat" and energy in other forms. Hot filament of bulb glows.
Very important formula: (You should memorize it.)
Speed = (Distance covered) / (time to cover the distance)
Distance covered = (position at the end) minus (position at the beginning)
= ( 64 m - 4 m ) = 60 meters
Time to cover the distance = 30 seconds.
Speed = (60 meters) / (30 seconds)
= (60/30) (meters/seconds)
= 2 meters per second .
1). Because every speck of matter in the Universe exerts gravitational force on every other speck of matter. The strength of the force depends on the masses of both specks, and the distance between them.
2). Because the Earth has about 80 times as much mass as the moon has.
Answer:
800J
Explanation:
Given data
Force= 100N
Distance moved= 8m
The expression for the work done is
WD= Force* distance
substitute
WD= 100*8
WD= 800Joules
Hence the work done is 800J