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Eva8 [605]
4 years ago
15

If energy cannot be created or destroyed, why doesn't the ball bounce back up to the same height it was dropped at?

Physics
1 answer:
shutvik [7]4 years ago
6 0
Because of its weight if its heavy than its going to bounce low when you drop it but if it is not heavy than its going to bounce a little higher than the heavy ball
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I believe the answer would be that the system potential energy will increase; while the Mar's angular momentum will remain the same. 
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4 0
3 years ago
Why are quartz useful
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8 0
3 years ago
A flywheel of J = 50 kg-m2 initially standing still is subjected to a constant torque. If the angular velocity reaches 20 Hz in
Karolina [17]

Answer:

\tau = 1256.5\ N.m

Explanation:

given,

J = 50 kg-m²

frequency, f = 20 Hz

time ,t = 5 s

we know,

angular velocity = 2 π f

ω = 2 π x 20

ω = 125.66 rad/s

now, angular acceleration calculation

\alpha = \dfrac{\omega_f-\omega_i}{t}

\alpha = \dfrac{125.66-0}{5}

   α = 25.13 rad/s²

Torque given to the flywheel.

    \tau = I \alpha

    \tau = 50\times 25.13

    \tau = 1256.5\ N.m

Torque of the given  flywheel is equal to \tau = 1256.5\ N.m

7 0
4 years ago
Why are mineral bands in metamorphic rocks light and dark colored?
Lera25 [3.4K]

Answer:Dark minerals rich in iron and magnesium separate from light minerals rich in silica and aluminum.

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During this separation process,Dark minerals rich in iron and magnesium are separated from light minerals rich in silica and aluminum.

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4 years ago
2 Grade 11 Physics Questions. Will Mark BRAINLIEST!!!
Stels [109]

Answer:

For the first one it would be screw and for the second one it is a ramp

Explanation:

Hope this helps

7 0
3 years ago
Read 2 more answers
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