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maw [93]
3 years ago
8

In 1958 a large earthquake in Alaska produced a tsunami. What was the approximate height of the tsunami?

Physics
2 answers:
lilavasa [31]3 years ago
6 0
The approximate height of the tsunami in Alaska in 1958 is 1720ft
liraira [26]3 years ago
5 0
The height was proudly 1720, 520 above the height of the bay.<span />
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Using the law of conservation of angular momentum, estimate how fast a collapsed stellar core would spin if its initial spin rat
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Answer:

\omega_{f} = 1000000\,\frac{rev}{day}

Explanation:

The law of conservation of angular momentum states that angular momentum remains constant when there is no external moment or forces applied to the system. Let assume that star can be modelled as an sphere, then:

\frac{2}{5}\cdot M\cdot R_{o}^{2} \cdot \omega_{o} = \frac{2}{5}\cdot M\cdot R_{f}^{2} \cdot \omega_{f}

The final angular speed is:

\omega_{f} = \omega_{o}\cdot (\frac{R_{o}}{R_{f}})^{2}

\omega_{f} = (1\,\frac{rev}{day} )\cdot (\frac{10000\,km}{10\,km} )^{2}

\omega_{f} = 1000000\,\frac{rev}{day}

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3 years ago
What does it mean for a reaction to be endothermic? choose 2 of the following
Rainbow [258]

Answer: I would choose options C and D

Explanation:

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2 years ago
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Suppose that, while lying on a beach near the equator watching the Sun set over a calm ocean, you start a stopwatch just as the
Yuri [45]

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<span>Applying the Pythagoras theorem, we  get,</span>

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3 years ago
you have a 200 kg bag being lifted with a block and tackle. If you pull with 100 newtons what is the MA of the system?
Korvikt [17]

Answer:

The mechanical advantage of the system is equal to 19.62

Explanation:

The ratio of the force produced by a machine to the force applied to it is called mechanical advantage. In other words it is the ratio of output force to the input force.

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mechanical advantage MA= \frac{1960}{100}=19.6

It gives an idea about the efficiency of a mechanical device. It is indeed a measure of force amplification. In block and tackle system an assembly of ropes and pulleys is used to lift loads. When the moving block is supported by a  greater  number of rope sections the force amplification will be more.

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Answer:

A. A resistor alters current and a switch turns current on and off

Explanation:

Resistor is the passive component that reduces the flow of current. Switch is the electrical device that turns on or off the current by closing and opening the electrical circuit.

Thus option A. A resistor alters current and a switch turns current on and off  is correct.

3 0
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