alvares1489 alvares1489

08-10-2019
Physics

contestada

A boy of mass 60 kg runs up a staircase of 50 steps in 10s. If height of each steps is 12 cm,find the power

Respuesta :

MathPhys MathPhys

08-10-2019

Answer:

350 W

Explanation:

50 steps × 0.12 m/step = 6 m

Power = work / time

P = mgh / t

P = (60 kg) (9.8 m/s²) (6 m) / 10 s

P = 352.8 W

Rounding to two significant figures, the power is 350 W.

Answer Link

Otras preguntas

on 1-2 1800's, when farmers began growing sugarcane in the Hawaiian Islands, rats were a major nuisance. The rats ate the sugarcane when they emerged from their

The identity status characterized by a lack of commitment to any goals or values is: a. achievement. b. foreclosure. c. diffusion. d. moratorium.

The point (-9,1) has a slope of 2. Write an equation.

Show that the polar Area element (stretch factor for integration) is: dA=rdrdθ by setting up the 2×2 Jacobian and finding the absolute value of the determinant

Which of the following best explains how the volume of a gas affects the pressure of a gas on the particulate level if temperature remains constant?

To what number must 5x² - 3y² be added to get the sum of 12x² + 2y²?

According to ___________, a country with a higher interest rate will have higher expected inflation.a. the international Fisher effect (IFE)b. purchasing power

Which organelle increases the plant cell size and surface area to increase the absorption of ions?

excerpt from when the sea turned to silver.

Use implicit differentiation to find ( x′) or ( fracd xd t ), where ( x=x(t) ), and evaluate ( x′ ) at ( (1,0) ). [ 1+x ln t=t eˣ ]