2 years ago

What two quantities do you have to know to calculate the density of and object?

1 answer:

3 0

'Density' is defined as (mass) / (volume). You need enough information to be able to measure or calculate the mass and the volume of the object.

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Explanation:

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2 years ago

When velocity is graphed with respect to time, what does the area under

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the answer is D

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Since the velocity of the object is the derivative of the position graph, the area under the line in the velocity vs. time graph is the displacement of the object.

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3 years ago

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2 years ago

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Tema [17]

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2 years ago

A grinding wheel is a uniform cylinder with a radius of 8.65 cm and a mass of 0.400 kg . Calculate its moment of inertia about i

anyanavicka [17]

Answer:

I = 1.5*10⁻³ kg*m²

Explanation:

It can be showed that the moment of inertia (or rotational inertia) for a uniform cylinder of mass m and radius r, respect an longitudinal axis going through its center (parallel to the height of the cylinder) can be written as follows:

$I = \frac{1}{2}*m*r^{2} = \frac{1}{2}*0.400 kg*(0.0865m)^{2} = 1.5e-3 kg*m2$

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3 years ago