4 years ago

Describe an object that has decreasing kinetic energy

Physics

2 answers:

charle [14.2K]4 years ago

7 0

What she said is correct

sleet_krkn [62]4 years ago

3 0

It is slowing down and has rising potential energy

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Crests of an ocean wave pass a pier every 10.0 s. if the waves are moving at 5.6 m/s, what is the wavelength of the ocean waves?

ExtremeBDS [4]

Every 10.0 seconds, a crest of the wave passes the pier. This means that the period of the wave is exactly 10.0 s:
$T=10.0 s$
which means that the frequency of the wave is
$f= \frac{1}{T}= \frac{1}{10.0 s}=0.1 Hz$

The wavelength of a wave is related to its frequency by the relationship
$\lambda= \frac{v}{f}$
where v is the speed of the wave.
In this problem, v=5.6 m/s; if we use the previous formula, we find the wavelength of the wave:
$\lambda= \frac{5.6 m/s}{0.1 Hz}=56 m$

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3 years ago

The mass number of a nucleus (except Hydrogen) is:

netineya [11]

The mass number of a nucleus (except Hydrogen) is: number of protons + number of neutrons.

A=Z+N

A=mass number=protons + neutrons.
Z=atomic number=number of protons.
N=number of neutrons.

In the case of Hydrogen it depends of isotope of Hydrogen .
the hydrogen has three isotopes,
protium : A=Z, because N=0
deuterium: A=Z+N; N=1
tritium: A=Z+N; N=2

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4 years ago

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How does the sun's heat affect the humidity of a place

Sunny_sXe [5.5K]

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the sun's heat affects humidity of how warm the air feels to us.

i tried

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3 years ago

With what speed must a ball be thrown directly upward so that it remains in the air for 10 seconds?

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