Answer:
True.
Explanation:
The kinetic energy and potential energy are equal when an objects falls as its potential energy is converted into kinetic energy.
Answer:
Acceleration of the cart will be 
Explanation:
We have given force F = 40 N
Mass of the cart = 20 kg
From newton's second law we know that force, mass and acceleration are related to each other
From second law of motion force on any object moving with acceleration a is given by
F = ma, here m is mass and a is acceleration
So 
Explain why the output voltage from a transformer<span> is </span>zero if<span> a </span>direct current<span> flow through the </span>primary coil<span>. Only an alternating </span>current<span> induces the </span>voltage<span> in the</span>transformer<span>. ... Alternating </span>current<span> is used because </span>transformers<span> can increase or decrease </span>voltage<span>.</span>
Answer:
yes, eye color, hair color etc.
<span>because in any atom the electrons are in the outer orbitals while protons are within the nucleus together with the neutrons. If energy is supplied electrons can jump to higher energy levels and leave the lower orbitals.
Especially in metals the conduction band is partially filled at room temperature with allows free flow of electrons throughout the metal thus they carry charge.
(it requires huge amounts of energy to remove a proton from the nucleus such things happen on the surface of sun).</span><span>
</span>
