Correct answer choice is :
A) Energy moves from one place to another through the wave.
Explanation:
Waves can carry energy over a range without moving matter the complete distance. For instance, an ocean wave can move many kilometers without the water itself traveling many kilometers. The water moves up and down a motion recognized as a disturbance. A wave brings its energy without carrying matter. Waves are observed to travel through an ocean or lake, yet the water perpetually reverts to its rest state. Energy is carried through the medium, yet the water particles are not carried.
Answer:
the kinetic energy of body B is twice the kinetic energy of body A
Explanation:
The kinetic energy of a body is given by
K = ½ m v²
If two objects leave the same point, suppose that at the same height when they reach the ground they have the same velocity.
Therefore if the mass of body b is twice the mass of body A
= ½ (2 
) v²
K_{b} = 2 (½ m_{a} v²)
K_{b} = 2 K_{a}
therefore the kinetic energy of body B is twice the kinetic energy of body A
Answer:
16 times that of car A
Explanation:
Moving objects have kinetic energy which is calculated using the formula:
E=(1/2)mv² where m is the mass of the object and v is its velocity.
For car A, kinetic energy =1/2×m×15²
=112.5m........................................i
For car B, the kinetic energy =1/2×m×60²
=1800m......................................ii
dividing ii by i we get
1800m/112.5m= 16.07
Therefore The kinetic energy of car B is 16.07 times that of car A
Answer:
800 N
Explanation:
During terminal velocity, air resistance=weight
A full set of adult human teeth numbers 32 .
