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8_murik_8 [283]
4 years ago
8

If the net external force acting on a system is zero , then the total momentum of the system is zero

Physics
2 answers:
Neporo4naja [7]4 years ago
8 0
If net external force acting on the system is zero, momentum is conserved. That means, initial and final momentum are same → total momentum of the system is zero.
antoniya [11.8K]4 years ago
8 0

Answer: FALSE

Explanation: Momentum is the product of the mass of an object and the velocity of that object,momentum is a vector quantity which means it has a Magnitude (distance covered) and Direction.

Force is the product of the mass of an object and its acceleration,Force can also be described as the weight of an object after the force of gravity acts on its mass.

If the net force acting on an object is zero it does not mean that the momentum of that system is zero, because momentum does not solely depends on forces,it has to do with the MASS of the object and the VELOCITY of the object.

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Because the angle of the sun moves/rotates in the summer, the sun's rays move their angle and impact the earth.

8 0
2 years ago
Please help me with physics ks3!! Sound waves and hearding (pic incl)
Nina [5.8K]
Your answers for a), b), and c) are correct.  Good work !

d). The high noise levels in Technology and PE are more of
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Technology and PE teachers are in there ALL day.

e).  Mr. Jones can't hear as high frequency as Jenny can because
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7 0
4 years ago
Read 2 more answers
1. How do you describe the path that the light passes through when it travels?
Ber [7]

A:

The white light is divided into its component hues - red, orange, yellow, green, blue, and violet - as it passes through the prism. Dispersion is the splitting of visible light into its many hues.

  • ===========================================================

B:

Dispersion is the splitting of visible light into its many hues. Each hue is associated with a certain wave frequency, as stated in the Light and Color unit, and different frequencies of light waves bend at different rates while passing through a prism.

  • ============================================================

C:

The white light is divided into its component hues - red, orange, yellow, green, blue, and violet - as it passes through the prism. Dispersion is the splitting of visible light into its many hues.

  • ===========================================================

D:

The sun and the weather combine to create a rainbow. As it passes from air to denser water, light enters a water droplet, slowing and bending. The light bounces off the interior of the droplet, separating the wavelengths—or colors—that make up the droplet. A rainbow is created as light escapes the droplet.

5 0
2 years ago
Find the volume of a box that is 122 cm long, 51 cm wide and 13 cm high.<br> V= ________cm³
DochEvi [55]

Answer:

80,886 cm^3

Explanation:

v= lwh (also known as length × width × height)

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6 0
4 years ago
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