gaining thermal energy in form of heat
Explanation:
When the thermal energy of a matter is increasing, it will directly increase the kinetic energy of the matter.
- Temperature changes causes the average kinetic energy of molecules to increase or decrease.
- If the kinetic energies of particles are increasing, the temperature must have been on rise.
- Increase in temperature causes molecules to start vibrating and moving about.
- The gain more energy that helps them to move away from their original position
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<h3><u>Answer;</u></h3>
Expulsion of electrons with varying frequencies of light observed in the photoelectron effect.
<h3><u>Explanation</u>;</h3>
- <em><u>The photoelectric effect supports a particle theory of light in that it behaves like an elastic collision between two particles, the photon of light and the electron of the metal.</u></em>
- Albert Einstein observed the photoelectric effect in which ultraviolet light forces a surface to release electrons when the light hits. He explained the reaction by defining light as a stream of photons, or energy packets.
Answer:
C
Explanation:
The kicker exerts more force of the football which is why the football moves when its kicked.
Answer:
0.000025s
Explanation:
Period it’s. : T(s)= 1/f(Hz)=1/40000Hz=0.000025s
Answer:
Lifting force, F = 21240 N
Explanation:
It is given that,
Mass of the helicopter, m = 1800 kg
It rises with an upward acceleration of 2 m/s². We need to find the lifting force supplied by its rotating blades. It is given by :
F = mg + ma
Where
mg is its weight
and "ma" is an additional acceleration when it is moving upwards.
So, 
F = 21240 N
So, the lifting force supplied by its rotating blades is 21240 N. Hence, this is the required solution.
