The molecules of the water do not change, because you have not added any other chemicals. that’s why water does not change it just only that liquid water is more dense than solid water (ice) ice is less dense.
Answer:
B) Its horizontal velocity component is the same as it was just as it was launched
Explanation:
From dynamic we know that free falling objects had two components of velocity
The only acceleration that takes place in this case is gravity in the y-component of velocity
Since a=0 and that means that the velocity at the y-component changes with time but the horizontal component remain the same
This means that the horizontal velocity is not 0 but is <u><em>the same as it was just as it was launched</em></u>
Answer:
8.06 m/s
Explanation:
It is given that,
Mass of a swimmer, m = 72 kg
He jumps from a diving board 3.25 m above the water.
We need to find the speed just as he hits the water if he jumps straight up. Using the conservation of energy to fin it as follows :
So, the required speed is 8.06 m/s.
Answer:
The muscles, joints and bones are adversely affected by immobility. The bones lose calcium as a result of the lack of weight bearing activity and this can lead to disuse osteoporosis, hypercalcemia, and fractures.
Answer:
A. Moving the mass from Point C to B, although it involves a greater distance, requires less force to do the same amount of work.
Explanation:
The amount of work will be the same either way. By going from C to B, the mover will exert less force over a greater distance, which is easier than exerting a greater force over a shorter distance.