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azamat
3 years ago
9

A 0.300 kg ball is thrown vertically upward with an initial speed of 17.0 m/s . part a what is the maximum height reached by the

ball?
Physics
1 answer:
Vitek1552 [10]3 years ago
7 0
1/2 mv^2 = mgh, all of the initial kinetic energy is converted to potential energy

So (since you can see how 'm' divides out):
(0.5)v^2 = gh, g= acceleration of gravity
(0.5)(20.0)^2 = (9.8)h
200 = 9.8h
h=20.4 m
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Una cuerda horizontal tiene una longitud de 5 m y masa de 0,00145 kg. Si sobre esta cuerda se da un pulso generando una longitud
FromTheMoon [43]

Answer:

Option (A) is correct.

Explanation:

A horizontal rope has a length of 5 m and a mass of 0.00145 kg. If a pulse occurs on this string, generating a wavelength of 0.6 m and a frequency of 120 Hz. The tension to which the string is subjected is

mass of string, m = 0.00145 kg

Frequency, f = 120 Hz

wavelength = 0.6 m

Speed = frequency x wavelength

speed = 120 x 0.6 = 72 m/s

Let the tension is T.

Use the formula

v =\sqrt\frac{T L}{m}\\\\72 = \sqrt\frac{T\times 5}{0.00145}\\\\T = 1.5 N

Option (A) is correct.

7 0
3 years ago
In the previous part, you determined the maximum angle that still allows the crate to remain at rest. If the coefficient of fric
lorasvet [3.4K]

Answer:

B. The maximum angle decreases

Explanation:

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If coefficient of static friction is less than .7 , naturally angle of repose will also become less ,ie,  it at lower angle of inclination , the object will start slipping .

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3 years ago
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Air never stops? IDK

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Nimfa-mama [501]

an emergency

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temp joining components

8 0
3 years ago
For each of the following, describe the relationship as directly or inversely proportional:
Maksim231197 [3]
The relationships can best be described as follows:
As frequency increases, wavelength decreases. <span>The greater the </span>energy<span>, the larger the frequency </span>and<span> the shorter (smaller) the </span>wavelength<span>. </span>

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Hope this answers the questions. Have a nice day. Feel free to ask more questions.</span>
7 0
3 years ago
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