Answer:
0.0316 m
Explanation:
Wok done = Energy change
Work done on the spring = Energy change of the block
Elastic Potential stored = Kinetic energy of the block
x =
x =
x = 0.0316 m
k = spring constant
m = mass of block
v = velocity of the block
x = compression of spring
Nearly 14 billion years ago, there was nothing and nowhere. Then, due to a random fluctuation in a completely empty void, a universe exploded into existence. Something the size of a subatomic particle inflated to unimaginably huge size in a fraction of a second, driven apart by negative-pressure vacuum energy. Scientists call this theory for the origin of the universe the Big Bang.
<h2>The forces acting on the body</h2>
Explanation:
When an apple falls from tree , The forces acting are
( i ) Gravitation force acts downwards due to pull of the earth .
( ii ) The force of friction due to air acts upwards
When it rolls down the hill
( i ) The gravitational force due to earth acting downwards
( ii ) The force if friction due to surfaces in contact , acting upwards along the slope of the hill
When we slip on the floor
( i ) The horizontal forward force due to horizontal component of force of reaction by the floor .
( ii ) The frictional force acting in a backward direction , due to surfaces in contact .
The three earth spheres which interact in this process are THE ATMOSPHERE, THE HYDROSPHERE AND THE BIOSPHERE.
The increase in the green house gases is destroying the ozone layers of the atmosphere, this makes it possible for more ultraviolet rays to penetrate through the atmosphere unto the earth surface. The increased temperature provided by these rays is warming up the oceans and this in turn is affecting the animals and the plants that reside in the oceans and those that depend on them. These chains of activities is changing the climate of the world and is affecting all the living things that live on the earth surface.
Answer:
velocity = distance / time taken
= 200/4
= 50 m/s
is the correct answer