A 2.34 kg book is dropped from a height of +3.1 m. (a) What is its acceleration?

The primary reason a light bulb emits light is due to

Mashutka [201]

The primary reason a light bulb emits light is due to the heating of the resistance in the filament of the light bulb. In fact, the power dissipated in a resistor is given by
 $P=I^2 R$
where I is the current and R the resistance. The larger the resistance or the current in the resistor, the larger the power dissipated. Due to this dissipation of power, the temperature of the filament becomes very high, and the resistance becomes incandescent, emitting light.

5 0

3 years ago

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The maximum energy a bone can absorb without breaking is surprisingly small. For a healthy human of mass 60 kg60 kg, experimenta

netineya [11]

Answer:

the maximum height a man can jump from and land rigidly upright on both feet without breaking his legs is 0.34 m

Explanation:

Mass of a healthy man = 60 kg

energy the bone can take without breaking = 200 J

If a healthy man jumps from a height 'h', he falls with an energy equal to the potential energy due to his initial height above the ground.

initial potential energy of the healthy man = mgh

where m = mass of the man

g = acceleration due to gravity = 9.81 m/s^2

h = the height above ground

==> PE = 60 x 9.81 x h = 588.6h

If we assume that all energy is absorbed in the leg bones in a rigid landing, then we can safely say that this calculated PE for a healthy man is equal to the energy his bone can absorb in the jump without breaking.

equating, we have

200 = 588.6h

the maximum height a man can jump from without breaking his legs = 200/588.6 = 0.34 m

When people jump from a height, the sudden deceleration to zero can impact a big force on the leg bones, shattering them. If the time spent in decelerating to zero is increased, the overall force on the leg bones is reduced greatly.

Bending the knees gradually on landing from a jump from a height, and then rolling increases the time spent decelerating, and reduces the impact force on the legs due to the landing. If you observe carefully you will see that this is what professional stunts men and acrobats do when they jump from a height.

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3 years ago

Susan

maxonik [38]

D. Was a leader in the woman's suffrage movement

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3 years ago

WILL GIVE BRAINLIEST

Lubov Fominskaja [6]

Answer:

I would measure the distance between points A and B

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3 years ago

According to missouri law, during what hours is it legal for a boat to tow a water-skier?

Tomtit [17]

According to missouri law, it is legal for a boat to tow a water-skier from sunrise to sunset. Water skis, wakeboard and parasailing are allowed from sunrise to sunset. These can be performed by towing the person from behind a motorboat or PWC. A reasonable distance should be maintained between vessels, properties and people to avoid any accidents. It is illegal for an intoxicated person to ride the vessel.

6 0

3 years ago