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3 years ago

15

A brick is lying on a table in a state of static equilibrium. If the mass of the brick is 7.52 kilograms, what is the normal for

ce exerted by the table on the brick?

1 answer:

WARRIOR [948]3 years ago

7 0

Answer:

-mg = -7.52*9.8 = - 73.696N

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If the car traveled 754 meters in a straight line between 0 and 36 seconds, what was the

ArbitrLikvidat [17]

Answer:

20.94 m/s

Explanation:

Recall that average velocity is defined as:

V = distance / time

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How long does it take a person to skate the width of a hockey rink (85 feet) at a constant speed of 15 feet per second?

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S(travel distance)=85 ft
v (velocity)=15 ft/s
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t (time)=?

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t=S/v
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3 years ago

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What is the magnitude of the angular momentum (in kgm2/s) of a 40 g golf ball flying through the air and spinning at 4300 rpm af

sladkih [1.3K]

Answer:

$L=0.0045\ kg-m^2/s$

Explanation:

Given that,

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We need to find the magnitude of the angular momentum of the ball. It is given by the formula as follows:

$L=I\omega$

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For sphere, $I=\dfrac{2}{5}mr^2$

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3 years ago