Physics

Giada Mcdonald

26 June, 15:40

A man of mass 80 kg runs up a flight of stairs 20 m high in 10 s. (a) how much power is used to lift the man? (b) If the man's body is 25% efficient, how much power does he expend? (c) This man consumes approximately 1.05 * 107 J (2500 food calories) of energy per day while maintaining a constant weight. What is the average power he produces over a day? (d) Compare this with his power production when he runs up the stairs.

+4

Answers (1)

Know the Answer?

Not Sure About the Answer?

Find an answer to your question ✅ “A man of mass 80 kg runs up a flight of stairs 20 m high in 10 s. (a) how much power is used to lift the man? (b) If the man's body is 25% ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.

Search for Other Answers

You Might be Interested in

N object has a charge of - 2.0 μc. how many electrons must be removed so that the charge becomes + 2.2 μc?

The area around a charged object where the object can exert a force on other charged objects is an electric?

Friction a. is slow but steady movement along a fault. b. happens when rock is weak and can slip smoothly, without creating shock waves. c. is the process by which faults release energy. d. is the force that resists sliding along a surface

Julie finds a snail on the sidewalk and wants to know whether or not the snail moves throughout the day. She places a single mark on the sidewalk next to the snail. What will Julie use the mark for initially?

How are visible light and microwaves the same?

New Questions in Physics

The friends now feel ready to try a problem. Suppose an Atwood machine has a mass of m1 = 2.5 kg and another mass of m2 = 8.5 kg hanging on opposite sides of the pulley. Assume the pulley is massless and frictionless, and the cord is ideal.

What are the 3 main branches of natural sciences

A girl is walking 2km north them east then south then west whar is her displacement

Find the y-component of this vector:73.3,12.0m. Remember, angles are measured from the + x axis.

A smaller unit of volume than a milliliter would be a microliter. A microliter is one-millionth of a liter. Select one: a. True b. False