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1 year ago

How much work does a football player do in the weight room when he squats 150 kg up a distance of 1 meter?

Physics

1 answer:

Zielflug [23.3K]1 year ago

3 0

Answer:

See below

Explanation:

The work done equals the increase in Potential Energy

PE = mgh

= 150 * 9.81 * 1 = 1471.5 j

3 sets of 10 is 30 times this = 44145 j

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Paladinen [302]

Answer:

Balanced force

Explanation:

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3 years ago

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Air conditioners sold in the United States are given a seasonal energy-efficiency ratio (SEER) rating that consumers can use to

amid [387]

Answer:

112.58

Explanation:

The Coefficient of Performance of any system is denoted by COP=Q/W, where Q is the useful heat supplied or removed and W is the work required by the system. According to the first law of thermoddynamics Qh= Qc + W, where Qh is the heat transfered to the hot reservoir and Qc is the heat collected from the cold reservoir. Substituting the values for W and apllying the limitation for maximum theoretical efficiency we end up with the eqution shown below.

The Coefficient of Performance of air conditioner or COP is denoted by

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converting the values to Kelvin and adding them in the above equation

COP(cool) = (25+273)/((34+273)-(25+273))

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From the question, it is stated that COP=SEER/3.4

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3 years ago

What is the name of the measurement system used in America?.

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Answer:

Imperial :DDDD

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2 years ago

What is meant by the term total internal reflection? What two conditions must be met for total internal reflection to occur?

Alex17521 [72]

Answer:

Hello....

Explanation:

Total internal reflection, in physics, complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.

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2 years ago

3. Nearsighted people can undergo a medical procedure called keratotomy to produce normal (or at least more-normal) vision. In t

Mademuasel [1]

Answer:

P= -1.83D

Explanation:

Given,

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3 years ago