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Inga [223]
3 years ago
9

13. Under what condition (if any) does a moving body experience no energy even though there

Physics
1 answer:
djyliett [7]3 years ago
6 0

Answer:

When the Net Forces are equal to 0

Explanation:

Momentum of a body can be defined as product of mass and velocity. It is in the same direction as in velocity. When the momentum of a body doesn't change, it is said to be conserved. If the momentum of a body is constant, the the net forces acting on a body becomes zero. When net forces acting on a body is zero, it means that no kinetic energy is being lost or gained, hence the kinetic energy is also conserved. If no energy is being gained or lost, it means that the body will experience no energy.

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Answer:

b

Explanation:

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3 years ago
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A rock with a mass of 6.1 kg falls 1.5 m. What potential energy does it have before the fall?
denpristay [2]

89.67J

Explanation:

Given parameters:

Mass of rock = 6.1kg

Height of fall = 1.5m

Unknown:

Potential energy = ?

Solution:

The potential energy is the energy at rest or due to the position of a body.

Potential energy is mathematically expressed as;

  Potential energy = mgh

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g is the acceleration due to gravity of the rock

h is the height of the rock

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3 years ago
True or False <br>One of the objections to the solar nebula theory is the angular momentum problem.
KengaRu [80]

Answer:

False, the angular momentum problem is not one of the objections to the solar nebular theory.

5 0
3 years ago
A toy rocket is launched straight up by using a spring. The rocket is initially pressed down on the spring so that the spring is
Delvig [45]

Answer:

B.6.86 m

Explanation:

Given that

Compression in spring ,x= 9 cm

Spring constant ,K= 830 N/m

Mass of the rocket ,m= 50 g = 0.05 kg   ( 1 kg = 1000 g)

Now by applying energy conservation

\dfrac{1}{2}Kx^2=mgh

h=\dfrac{1}{2\times mg}kx^2

Now by putting the values ( we are taking g= 9.81 m/s²)

h=\dfrac{1}{2\times 9.81\times 0.05}\times 830\times 0.09^2

h= 6.853 m

Therefore the answer is B.

B.6.86 m

8 0
3 years ago
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