2 years ago

Find the weight of an object with mass 80 kg on the moon ( g = 1.6 m/s^2)

Physics

1 answer:

SpyIntel [72]2 years ago

5 0

Answer:

80kg = 133 Newtons I'm pretty sure this is right.

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3 years ago

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What is the momentum of an 18-kg object moving at 0.5 m/s?

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3 years ago

By what factor must the amplitude of a sound wave be decreased in order to decrease the intensity by a factor of 3?

s344n2d4d5 [400]

Answer:

Amplitude is decreased by a factor of $\sqrt3$ if intensity is decreased by a factor of 3.

Explanation:

Intensity of a sound wave is directly proportional to the square of its amplitude.

Therefore, if intensity is $I$ and amplitude is $A$ , then

$I=kA^2$ , where, $k$ is constant of proportionality.

Now, if intensity of sound wave is decreased by a factor of 3. So,

New intensity is, $I_{new}=\frac{I}{3}$

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Plug in $kA^2$ for $I$ . This gives,

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Therefore, amplitude is decreased by a factor of $\sqrt3$ .

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3 years ago

A proton is propelled at 4×106 m/s perpendicular to a uniform magnetic field. 1) If it experiences a magnetic force of 4.8×10−13

tia_tia [17]

Answer:

B = 0.75 T

Explanation:

As we know that the force on a moving charge in magnetic field is given by the formula

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3 years ago

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3 years ago