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iren [92.7K]
3 years ago
9

A spring has a spring constant of 115 N/m. How much energy is stored in the

Physics
2 answers:
noname [10]3 years ago
8 0

Explanation:

Elastic energy stored in a spring is:

EE = ½ kx²

EE = ½ (115 N/m) (0.15 m)²

EE = 1.3 J

andrey2020 [161]3 years ago
6 0

<u>Answer:</u> The energy stored in the spring is 1.33 J

<u>Explanation:</u>

To calculate the energy stored in the spring, we use the equation:

E=\frac{1}{2}kx^2

where,

E = energy stored in the spring

k = spring constant = 115 N/m

x = compression of the spring = 0.15 m

Putting values in above equation, we get:

E=\frac{1}{2}\times 115\times (0.15)^2\\\\E=1.33J

Hence, the energy stored in the spring is 1.33 J

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If two stars have the same absolute magnitude, what can be a reason for the difference in their brightness?
AysviL [449]

B. their distances from the sun.

Explanation:

Absolute Magnitude:

Astronomers defines the absolute magnitude of a stars brightness in terms of how bright a star appears from a standard distance of 10 parsecs. Parsec is a unit of distance in astronomy. 10 parsecs is equal to 32.6 light years.

Apparent Magnitude:

Apparent magnitude of a star refers to how bright the star appears at its distance from the Earth.

If two stars have the same absolute magnitude but their apparent magnitude differs, the reason is that the distance of both the stars from the Earth varies. Hence their brightness differs when measured from Earth. The farther a star is from the Earth, the fainter its brightness.

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Force applied by the machine to over come resistance
5 0
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2 years ago
The acceleration due to gravity on the surface of Jupiter is about 2.5 times the acceleration due to gravity on Earth’s surface.
Ann [662]

Answer: The correct answer is option C.

Explanation:

Weight = Mass × Acceleration

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