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Mandarinka [93]
3 years ago
8

The first and second laws apply to _________________ objects.

Physics
1 answer:
Serggg [28]3 years ago
4 0

Answer:

multiple

Explanation:

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A box is pulled with a horizontal force of 500N and moves 5m. What is the work done?
shepuryov [24]
The formula for work is N x m, which will equal in joules.
500 x 5 = 2,500 joules
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4 years ago
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3 years ago
When a mass of 29 g is attached to a certain spring, it makes 20 complete vibrations in 3.1 s. What is the spring constant of th
never [62]

Answer:

The spring constant of the spring is 47.62 N/m

Explanation:

Given that,

Mass that is attached with the spring, m = 29 g = 0.029 kg

The spring makes 20 complete vibrations in 3.1 s. We need to find the spring constant of the spring. We know that the number of oscillations per unit time is called frequency of an object. So,

f=\dfrac{20}{3.1}

f = 6.45 Hz

The frequency of oscillator is given by :

f=\dfrac{1}{2\pi}\sqrt{\dfrac{k}{m}}

k is the spring constant

k=4\pi^2f^2m

k=4\pi^2\times (6.45)^2\times 0.029

k = 47.62 N/m

So, the spring constant of the spring is 47.62 N/m. Hence, this is the required solution.

4 0
3 years ago
Which action best demonstrates the transformation of mechanical energy to heat energy and light energy?
Vinvika [58]

Well, first off, mechanical energy is the sum of kinetic and potential energy in an object that is used to do work. In other words, it is energy in an object due to its motion or position, or both. Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases. Light energy is the only form of energy that we can actually see directly. It is formed through chemical, radiation, and mechanical means. Striking a match stick (mechanical energy) creates fire, which has a ton of heat energy, and produces light too, so the answer, is A. I hope i could help!

5 0
3 years ago
what is the frequency of a ocean wave that is traveling at a speed of 45 m/s if it has a wavelength of 3 meters? please show wor
soldier1979 [14.2K]

Answer:

15 miles per hour

Explanation:

45/3=15

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3 years ago
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