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Julli [10]
3 years ago
8

a person throws a ball in such a way that its speed is zero at one particular point in its path. How did the person throw the ba

ll?

Physics
1 answer:
Keith_Richards [23]3 years ago
6 0

vertical! or in other words, up!


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Find the wavelength λ of the 80.0-khz wave emitted by the bat. express your answer in millimeters.
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Answer:

4.29 millimeters

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f=80.0 kHz = 80,000 Hz

Therefore we can find the wavelength of the wave emitted by the bat by using the relationship between speed, frequency and wavelength:

\lambda=\frac{v}{f}=\frac{343 m/s}{80,000 Hz}=4.29\cdot 10^{-3} m=4.29 mm

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What is the approximate amount of thrust you need to apply to the lander to keep it's velocity roughly constant
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The approximate amount of thrust(force) you need to apply to the lander to

keep its velocity roughly constant is zero.

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Newton's second law of motion states that the acceleration the force acting

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If the object is moving with uniform velocity, it simply means that the

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Clarissa thought that learning to play the banjo was a waste of time. She didn't bother to practice after her lessons
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A girl throws a rock horizontally at 10 m/s from the top of a building, 22 m above street level. Assuming free fall conditions a
MAXImum [283]

Answer:21.18 m

Explanation:

Given

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22=\frac{1}{2}gt^2

t=\sqrt{\frac{22\times 2}{g}}

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You find yourself in a place that is unimaginably <u>hot and dense</u>. A r<u>apidly changing</u><u> gravitational field</u><u> </u>randomly warps space and time. Gripped by these huge fluctuations, you notice that there is but a single, unified force governing the universe, you are in the early universe before the Planck time.

<h3>What is Planck time?</h3>

The Planck time is approximately<u> 10^-44 seconds</u>. The smallest time interval, or "zeptosecond," that has so far been measured is <u>10^-21 seconds</u>. A photon traveling at the speed of light would need one Planck time <u>to traverse a distance of one </u><u>Planck length</u>.

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