Continental
drift. This Theory was invented by Alfred Wegener.
<span>His
hypothesis was that the continents move relative to each other on the tectonic
plate and so they drift. The drifting and folding of the continents results in pushing
up huge mountains.</span>
The correct answer is Contact force:)
E=Eq,
where F is the electrostatic force (or Coulomb force) exerted on a positive test charge q.
It is true. Time is always measured in seconds.
Potential energy = m · g · h
-- When you held the ball at 2.0 meters above the floor, it had
(0.5 kg) · (9.8 m/s²) · (2.0 m) = 9.8 Joules of potential energy.
-- After it bounced and went back up as high as it could, it was only 1.8 meters above the floor. Its potential energy was
(0.5 kg) · (9.8 m/s²) · (1.8 m) = 8.82 Joules
-- Between the drop and the top of the bounce, it lost
(9.8 - 8.82) = <em>0.98 Joule</em> .
-- The energy was lost when the ball hit the floor. During the hit, 0.98 joule of kinetic energy turned to <em>thermal energy</em>, which slightly heated the ball and the floor.
