2 years ago

Why does the book with more mass feel heavier in your hand

Physics

1 answer:

jok3333 [9.3K]2 years ago

6 0

Answer:

because the book's is covered by papers

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3 years ago

A student shakes a rope such that 20 complete vibrations are made in 4.00 seconds. Determine the vibrational frequency of the ro

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Answer:

The vibrational frequency of the rope is 5 Hz.

Explanation:

Given;

number of complete oscillation of the rope, n = 20

time taken to make the oscillations, t = 4.00 s

The vibrational frequency of the rope is calculated as follows;

$Frequency = \frac{number \ of \ complete \ vibrations}{time \ taken} \\\\Frequency = \frac{20 }{4 \ s} \\\\Frequency = 5 \ Hz$

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3. Calculate the wavelength of wave that has a frequency of 4.75 x 1012Hz.

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Frequency=v=4.75×10^12Hz
Wavelength=?

We know

$\boxed{\sf \lambda=\dfrac{C}{V}}$

$\\ \sf\longmapsto \lambda=\dfrac{3\times 10^8ms^{-1}}{4.75\times 10^{12}s^{-1}}$

$\\ \sf\longmapsto \lambda=0.631\times 10^{-4}m$

$\\ \sf\longmapsto \lambda=6.31\times 10^{-5}m$

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3 years ago

A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. for simplicity, co

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Let V = the volume of the balloon
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Net upward force F = V * ?cool * g - V * ?hot * g

F = V g (?cool - ?hot)

Mass of the balloon m = V ?hot

a = F/m = V g (?cool - ?hot)/(V ?hot)

a = g(?cool/?hot - 1)

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a = 3.79 m/s^2

<span>Answer is 3.79 m/s^2</span>

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two objects are in uniform circular motion at the same speed but at different radii. the ones with the __ radius has the largest

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Answer:the one with the smaller radius has the highest centripetal force

Explanation:

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3 years ago

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