Physics, 30.01.2020 02:57 Supermonkey6425

An athlete is working out in the weight room. he steadily holds 50 kilograms above his head for 10 seconds. which statement is true about this situation?

the athlete isn’t doing any work because he doesn’t move the weight.
the athlete isn’t doing any work because he doesn’t hold the weight long enough.
the athlete is doing work because he prevents the weight from falling downward.
the athlete is doing work because 50 kilograms is a significant load to lift.

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 09:30

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer

Answers: 2

Answer

Physics, 22.06.2019 12:10

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

Answers: 1

Answer

Physics, 22.06.2019 12:30

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

Answers: 3

Answer

Physics, 22.06.2019 13:30

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.

Answers: 3

Answer

You know the right answer?

An athlete is working out in the weight room. he steadily holds 50 kilograms above his head for 10 s...

Questions