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3 years ago

Earthquakes typically occur

Physics

1 answer:

ICE Princess25 [194]3 years ago

3 0

Answer:

<h3>Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. ... When the rocks break, the earthquake occurs.</h3>

Explanation:

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Unexpected orbital velocities of stars around the centers of galaxies led astronomers to predict the existence of dark _____.

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4 years ago

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A paper clip is pushed horizontally off a table with speed 1.5m/s. If the table has a height of 1.1m how far from the table does

Julli [10]

the answer is D. 0.71 m

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3 years ago

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3. What is the temperature if a 545-Hz sound wave has a wavelength of 0.651 m

KATRIN_1 [288]

Answer:

19.33°C

Explanation:

To find the value of T you use the following formula:

$v=343+0.61T$

v: speed of sound

To calculate v you use:

$v=\lambda f$

λ: wavelength = 0.651m

f: = 545Hz

by replacing :

$v=(0.651m)(545s^{-1})=354.79m/s$

Finally, by replacing in the first formula you obtain:

$354.79=343+0.61T\\\\T=19.33\°C$

T = 19.33°C

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3 years ago

Need help... 44 points!!!!

vladimir1956 [14]

As per conditions described here we know that all force arrow are not of equal length

So all forces are not same in magnitude

Here applied force on right direction is more in magnitude then the friction force on left

So it will have net unbalanced force towards right due to which it will move towards right direction or in the direction of net unbalanced force

While in the upward and downward direction the forces are balanced and hence the box will not move in that direction

So normal force will be balanced by gravitational force

So here answer will be

The forces acting on the box are UNBALANCED .

The box will move to the RIGHT .

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4 years ago

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$|B-C|^2=|B|^2-2|B||C|\cos(180-77-51)^\circ+c^2$

$95^2=62^2-2(62)(c)\cos52^\circ+c^2$

$c^2-124\cos52^\circ c-5181=0\implies c=120\,\mathrm m$

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4 years ago