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3 years ago

If a machine exerts 12000 J of work with800 N of force the distance it covered was

Physics

1 answer:

sergiy2304 [10]3 years ago

5 0

Answer:

Explanation:

The distance covered can be found by using the formula

$d = \frac{w}{f} \\$

f is the force

w is the workdone

From the question we have

$a = \frac{12000}{800} = \frac{120}{8} \\$

We have the final answer as

Hope this helps you

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It takes 5.0 seconds for a wave with a wavelength of 2.5 m to travel past your location. What’s the period of the wave. What is

Anna35 [415]

(a) Period of the wave
The period of a wave is the time needed for a complete cycle of the wave to pass through a certain point.
So, if an entire cycle of the wave passes through the given location in 5.0 seconds, this means that the period is equal to 5.0 s: T=5.0 s.

(b) Frequency of the wave
The frequency of a wave is defined as
$f= \frac{1}{T}$
since in our problem the period is $T=5.0 s$ , the frequency is
$f= \frac{1}{5.0 s}=0.2 Hz$

(c) Speed of the wave
The speed of a wave is given by the following relationship between frequency f and wavelength $\lambda$ :
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3 years ago

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Dmitry [639]

Answer:

$9.3\cdot 10^{37}$

Explanation:

Power is defined as the energy produced (E) per unit of time (t):

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This means that the energy produced in the Sun each second (1 s), given the power $P=4.0\cdot 10^{26}W$ , is

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Each p-p chain reaction produces an amount of energy of

$E_1 = 4.3\cdot 10^{-12} J$

in order to get the total number of p-p chain reactions per second, we need to divide the total energy produced per second by the energy produced by each reaction:

$n=\frac{E}{E_1}=\frac{4.0\cdot 10^{26} J}{4.3\cdot 10^{-12} J}=9.3\cdot 10^{37}$

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3 years ago

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Galina-37 [17]

Answer:

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≈1.08x10⁻⁷

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Concave lens. These are used in making the objectives of reflection telescopes

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