Answer:
(a)
(b) 43.45 m
(c) 12.58 m
Explanation:
By applying newton's law on car,
where is the friction force and m is mass, a is acceleration
a = acceleration of car
(b)
From kinematic equation
but u=0 hence
and making s the subject
(c
From the kinematic equation
<span>1. Turning on the light converts electrical energy to light energy. 2. The ball sitting on the floor has a potential energy [energy at rest], kicking the ball converts its potential energy to kinetic energy, which is energy in motion. 3. MP 3 player uses batteries which possess chemical energy, the chemical energy is converted to sound energy when the player was turned on. 4. When the fan was turned on, the electrical energy which powered the fan was converted to mechanical energy which makes the fan blades to rotate. 5. The candy bar possesses chemical energy which was converted to mechanical energy in the eater which make it possible for him to perform the mechanical work of dancing.</span>
The period of the wave would be halved
Answer: A
Can the wave travel through a vacuum
Explanation:
Electromagnetic waves can propagate through space, and vacuum carrying electromagnetic radiant energy without the help of any medium for its propagation. But mechanical wave can't propagate through a vacuum without the help of a medium.