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jonny [76]
2 years ago
8

!!! HELP!!! HELL GELP HELP HELP

Physics
2 answers:
Reptile [31]2 years ago
8 0
It’s supernova...............
4vir4ik [10]2 years ago
5 0

Answer:

supernova

Explanation:

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The kinetic energies of particles in a sample of matter are increasing. This sample is most likely
KIM [24]

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

Learn more:

Kinetic energy brainly.com/question/7966903

#learnwithBrainly

8 0
3 years ago
Which of the following experiments or phenomena provided evidence for the particle nature of light?
Marysya12 [62]
<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.
8 0
3 years ago
Read 2 more answers
When a football is kicked, the action and reaction forces do NOT cancel each other out because
AfilCa [17]

Answer:

C

Explanation:

The kicker exerts more force of the football which is why the football moves when its kicked.

6 0
3 years ago
A sonar emits a sound signal of frequency 40000Hz, towards the bottom of the sea.
kap26 [50]

Answer:

0.000025s

Explanation:

Period it’s. : T(s)= 1/f(Hz)=1/40000Hz=0.000025s

8 0
2 years ago
An 1800 kg helicopter rises with an upward acceleration of 2.0 m/s?. What lifting force is supplied by its rotating blades?
Viktor [21]

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=1800\ kg(9.8\ m/s^2+2\ m/s^2)

F = 21240 N

So, the lifting force supplied by its rotating blades is 21240 N. Hence, this is the required solution.

4 0
3 years ago
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