4 years ago

Which area of physics involves using a compass in the woods?

1 answer:

6 0

Magnetism. A compass uses the earth's magnetic field to point in the direction of the north geographic pole (south magnetic pole) the N point on a compass points to the S magnetic pole which is the north geographic pole. It's a little confusing, but it's just opposites.

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Why do people cry but dont say whats wrong they jus stand and act like we kno wha wrong

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Answer:

usually its because they dont wanna talk

Explanation:

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4 years ago

Which one of the following substances is a liquid fuel used in rocket engines?

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3 years ago

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3 years ago

What is 1 + 2 -3 +5 - 10

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3 years ago

A small ball with mass 2.50 kg is mounted on one end of a rod 0.750 m long and of negligible mass. The system rotates in a horiz

alina1380 [7]

Answer:

1.40625 kg-m^2

Explanation:

Supposing we have to calculate rotational moment of inertia

Given:

Mass of the ball m= 2.50 kg

Length of the rod, L= 0.78 m

The system rotates in a horizontal circle about the other end of the rod

The constant angular velocity of the system, ω= 5010 rev/min

The rotational inertia of system is equal to rotational inertia of the the ball about other end of the rod because the rod is mass-less

$I_{sys}= mL^2= 2.50\times 0.75^2$

=1.40625 kg-m^2

m= mass of the ball and L= length of the ball

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3 years ago