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Dennis_Churaev [7]
3 years ago
5

What is the definition of conservation of energy

Physics
2 answers:
lara [203]3 years ago
8 0
Energy is neither created nor destroyed; when energy is transformed from one form to another, there is no energy lost

nataly862011 [7]3 years ago
3 0
Energy cant be created or destroyed, it can only be changed from one form to another.

hope this helps you
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You illuminate the surface of some metal with green laser and observe the photocurrent. If you decrease the intensity of laser,
gregori [183]

Remain the same.

Explanation:

The kinetic energy of the ejected electrons, and thus the resulting photocurrent, does not depend on the intensity of the incident radiation. Instead, it depends on the frequency. So since the stopping potential is used to reduce the photocurrent to zero and the photocurrent does not depend on the intensity, the stopping potential remains the same.

7 0
2 years ago
28. Cooking requires continuous addition of energy to the chemical reactions that are taking place. The chemical reactions invol
Goshia [24]
Endothermic I believe is the answer
4 0
3 years ago
Which are examples of perfectly in elastic collisions
sweet [91]
Typical examples of inelastic collision are between cars, airlines, trains, etc.
For instance, when two trains collide, the kinetic energy of each train is transformed into heat, which explains why, most of the times, there is a fire after a collision. However, the momentum of the two trains that are involved in the collision remains unaffected. So, the trains collide with all their speed, maintaining their momentum, yet their kinetic energy is transformed into heat energy.
Another way to explain a train or a car collision is this: when the two trains or cars collide, they stick together while slowing down. They slow down because their kinetic energy is gradually lost. Still, they collide because they conserve their momentum.
8 0
3 years ago
A weight lifter lifts a 345 N set of weights from ground level to a position over his head, a vertical distance of 1.89 m. How m
Pavlova-9 [17]

Answer:652.05 J

Explanation:

Given

Weight of lifter W=345 N

vertical distance move h=1.89 m

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Change in Potential Energy =m g h

\Delta PE=345 \times 1.89=652.05 J

therefore work done is equal to 652.05 J  

3 0
3 years ago
this Punnett square shows the cross between two pants. One parent has round seeds (RR). And the other parent has wrinkled seeds
Bad White [126]

All Offsprings will be round because it comes out as dominant evrytime and it has 0 ressesives. Hope this helped ;)

4 0
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