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3 years ago

15

Consider two uniform solid spheres where both have the same diameter, but one has twice the mass of the other. how much larger i

s the moment of inertia of the larger sphere compared to that of the smaller sphere?

1 answer:

egoroff_w [7]3 years ago

5 0

<span>The moment of inertia of the large sphere will be twice that of the smaller sphere.
The formula for the moment of inertia for a solid sphere is:
I = (2/5)mr^2
where
I = moment of inertia
m = mass
r = radius

Since both spheres have the same diameter, they also have the same radius, so the only change is their mass. And the moment of inertia is directly proportional to their mass as shown by the above formula. So the sphere with twice the mass will have twice the moment of inertia, or 2 times.</span>

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TRUE OR FALSE? earth revolves around the sun tilted on its axis

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The question is worded very poorly, but you'd have to say it's TRUE.

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Current is directly proportional to resistance.<br> a. True<br> b. False

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IF voltage remains constant, then current is
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The correct response is "b).", signifying "false" as the choice.

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3 years ago

To win the game, a placekicker must kick a football from a point 44 m (48.1184 yd) from the goal, and the ball must clear the cr

Ganezh [65]

Answer:

The distance by the ball clear the crossbar is 1.15 m

Explanation:

Given that,

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Speed = 24 m/s

Angle = 31°

Height = 3.05 m

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Put the value into the formula

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Using formula of vertical velocity

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Put the value into the formula

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We need to calculate the time

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Put the value into the formula

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We need to calculate the vertical height

Using equation of motion

$h=u_{y}t+\dfrac{1}{2}at^2$

Put the value into the formula

$h=12.3\times2.1-\dfrac{1}{2}\times9.8\times(2.1)^2$

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We need to calculate the distance by the ball clear the crossbar

Using formula for vertical distance

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3 years ago

The function h(t) = –16t2 + 96t + 6 represents an object projected into the air from a cannon. The maximum height reached by the

Rainbow [258]

Answer:

3 seconds

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Since h(t) represents the height and t represents the time, we can set the equation equal to 150 to find t.

-16t^2+96t+6=150

Subtract 150 from both sides to set the equation equal to 0, to find the solutions.

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-16(t^2+6t+9)=0

Now we can focus on the terms inside the parenthesis and factor it again.

t^2-6t+9=0

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3 years ago

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OverLord2011 [107]

Answer:

A measured force of (46.5 0.8 N  ) would not be in agreement with a theoretically calculated force of (48.4 0.6 N  )

Explanation:

From the question we are told that

Measured force is $F_M = [46.5 \pm 0.8 \ N ]$

Calculated force is $F_c = [48.4 \pm 0.6 \ N ]$

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$46.5 - 0.8 < F_M < 46.5 + 0.8$

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Generally the calculated force in interval form is

$48.4 - 0.6 < F_c < 48.4 + 0.6$

=> $47.8 < F_M$

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A measured force of (46.5 0.8 N  ) would not be in agreement with a theoretically calculated force of (48.4 0.6 N  )

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2 years ago