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Daniel [21]
3 years ago
15

A crane lifts a 6.500 N weight 10 m in 180 seconds. What power is used?

Physics
1 answer:
Nostrana [21]3 years ago
8 0
Power is work over time.

P= \frac{W}{t}

We can solve for work by using F*d

W=F*d = (6.500N)(10m) = 65 J

Now solve for power:

P= \frac{(65J)}{180s} = 0.361W

P=0.361W
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A tennis ball moving at a speed of 4 m/s, collides with a bowling ball at rest. The tennis ball bounces back in the direction op
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Both experienced the same magnitude impulse

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Explain how carbon is cycled between the hydrosphere and geosphere. Use specific examples.
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what causes sounds? A. electromagnectic energy B. the release of sensory neurons C.movement that causes changes in air placement
bogdanovich [222]

Answer:

D.vibrations that cause changes in air pressure

Explanation:

Sound is a type of wave.

A wave is a periodic disturbance/oscillation that trasmits energy without transmitting matter. There are two different types of waves:

- Transverse waves: in a transverse wave, the direction of the oscillation is perpendicular to the direction of motion of the wave. These waves are characterized by the presence of crests (points of maximum positive displacement) and troughs (points of maximum negative displacement). Examples of transverse wave are electromagnetic waves.

- Longitudinal waves: in a longitudinal wave, the direction of the oscillation is parallel to the direction of motion of the wave. These waves are characterized by the presence of compressions (regions where the density of particle is higher) and rarefactions (regions where the density of particle is lower). Examples of longitudinal waves are sound waves.

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3 0
3 years ago
Read 2 more answers
ALL OF MY POINTS FOR THIS!
scoray [572]
Newton's 2nd law of motion:

                       Force  =  (mass) x (acceleration)

                                   =  (1,127 kg) x (6 m/s² forward)

                                   =  (1,127 x 6)  newtons forward

                                   =    6,762 newtons forward
______________________________

             Momentum  =  (mass) x (speed)

                                 =   (69 kg) x (6 m/s)

                                 =      414 kg-m/s
3 0
3 years ago
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