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cupoosta [38]
3 years ago
7

How can you justifies the age of earth being 4.5 billion years old

Physics
1 answer:
IceJOKER [234]3 years ago
8 0

Answer:

ummmmmmmmmm through science??

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Daniel will earn $2.20 more a week because his pay increase will increase his pay from $8 to $8.40
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Why is most space exploration accomplished with spacecraft that do not have astronauts on board
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Because of the enormous expense of creating conditions aboard
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the acceleration of a body in free fall depends on the place or the world in which it is, true or false?​
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3 years ago
8. A car initially has 100 J of total energy. After driving down the road, the car's
sveta [45]

The work done on the car is -20 J.

Work done on the car is negative, meaning that the car actually does work on the external system.

<h3>Energy and law of conservation of energy</h3>
  • Energy is the ability to do work
  • the law of conservation of energy states that the total energy in a system is conserved

From the law of conservation of energy, the initial energy of the car before it moves down the road remains constant or unchanged.

  • Initial energy = 100 J
  • Initial energy = Final energy - work done on car
  • Final Energy = Work done on car + initial energy

80J = Work done on car + 100 J

Work done on car = 80 - 100J

Work done on car = -20 J

Hence, the work done on the car is -20 J

Work done on car is negative.

Since work done on the car is negative, it means that the car actually does work on the external system. Hence, the decrease in the energy of the car.

Learn more about energy and work at: brainly.com/question/13387946

8 0
2 years ago
Ocean waves are hitting a beach at a rate of 3.5 Hz. What is the period of the waves?
Radda [10]

Answer:

the correct answer is 0.286 s

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3 years ago
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