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2 years ago

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What is the definition of period in physics In your own words

1 answer:

never [62]2 years ago

5 0

Answer:

Period refers to the time that it takes to do something. ... The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.

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A grindstone of mass 12 kg and radius 0.3 m is initially rotating freely at 48 rad/sec. An axe is brought into contact with the

lesya [120]

Answer:

$I = 0.54\,kg\cdot m^{2}$

Explanation:

1) The moment of inertia of the grindstone is:

$I = \frac{1}{2}\cdot m \cdot r^{2}$

$I = \frac{1}{2}\cdot (12\,kg)\cdot (0.3\,m)^{2}$

$I = 0.54\,kg\cdot m^{2}$

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3 years ago

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Radiation treatments to treat cancer are an example of

7nadin3 [17]

I'm not sure but it's probably C because you are treating a health problem.

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2 years ago

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A Ping-Pong ball has a mass of 2.3 g and a terminal speed of 9.3 m/s. The drag force is of the form bv2 What is the value of b?

Fed [463]

Answer:

The value is $b = 0.00026 \ kg / m$

Explanation:

From the question we are told that

The mass of the Ping-Pong is $m = 2.3 \ g = 0.0023 \ kg$

The terminal speed is $v = 9.3 \ m/s$

The drag force is $bv^2$

Generally the resultant force on the Ping- Pong is mathematically represented as

$F = mg - bv^2$

when terminal velocity is attained , the resultant force is zero so

$0 = mg - bv^2$

=> $b = \frac{m * g}{v^2}$

=> $b = \frac{0.0023 * 9.8}{ 9.3 ^2}$

=> $b = 0.00026 \ kg / m$

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3 years ago

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3 years ago