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iragen [17]
3 years ago
5

What is the average power output of an athlete who can life 9.0 * 10^2 kg 2.5 m in 2.0 s?

Physics
1 answer:
vampirchik [111]3 years ago
5 0

Answer:

11025 W

Explanation:

Given that athlete can lift a mass of 900 kg by 2·5 m in 2 s

<h3>Average power output is defined as the work done per unit time</h3><h3>∴ Average power output = (work done) ÷ (time taken)</h3>

Here on the object the force that acts is the weight of that object

∴ Force on that object = (mass of the object) × (acceleration due to gravity) = 900 × 9·8 = 8820 N

∴ Person requires this much force to lift that object

<h3>Work done on the object is defined as the dot product of force and displacement</h3>

∴ Work done = 8820 × 2·5 =22050 J

Power = 22050 ÷ 2 = 11025 W

∴ Average power output of the athlete = 11025 W

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the ratio of the bubble’s volume at the top to its volume at the bottom is 1.019

Explanation:

given information

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P_{0} = 1.01  x 10^{5} Pa

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\frac{V_{2} }{V_{1}} = \frac{P_{1} }{P_{2}}

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P_{1}  = 1.01 x 10^{5} Pa + (1000 x 9.8 x 0.2) = 1,0296 x 10^{5} Pa

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8 0
3 years ago
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2. 0.4921 \frac{ft}{s^2} (feet per second squared)

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3 0
2 years ago
A 1.0-kg block of aluminum is at a temperature of 50 Celsius. How much thermal energy will it lose when it’s temperature is redu
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The lose of thermal energy is, Q = 22500 J

Explanation:

Given data,

The mass of aluminium block, m = 1.0 kg

The initial temperature of block, T = 50° C

The final temperature of the block, T' = 25° C

The change in temperature, ΔT = 50° C - 25° C

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3 years ago
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3 years ago
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Learn more about Coulomb Force here, brainly.com/question/15451944

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6 0
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