2 years ago

If you drag a 50kg block across the floor which has a coefficient of friction of .30, what is

Physics

1 answer:

torisob [31]2 years ago

6 0

Answer:

750 Newton

Explanation:

force=mass(acceleration)

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EX 6-1 A ball is twirled on a 0.870 - m-long string with a constant speed of 3.36 m / s . Calculate the acceleration of the ball

Elina [12.6K]

Answer:

$a=12.97\ m/s^2$

Explanation:

Given that,

The length of a string, l = 0.87 m

Speed of the ball, v = 3.36 m/s

We need to find the acceleration of the ball. The acceleration acting on the ball is centripetal acceleration. It is given by :

$a=\dfrac{v^2}{r}\\\\a=\dfrac{(3.36)^2}{0.87}\\\\=12.97\ m/s^2$

So, the acceleration of the ball is $12.97\ m/s^2$ .

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Marina CMI [18]

Answer:

it's A

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adelina 88 [10]

Answer:

The element "AI" has:

Protons: 13 Neutrons: 14 Electrons: 13

Have a great day.

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2 years ago

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How much heat is absorbed by 60 g of copper when it is heated from 20°C to 80°C?

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Answer:

1,836J

Explanation:

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Dependent on what you are measuring and what took you are using. Please be more specific.

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