danizincaze danizincaze

19-05-2019
Physics

contestada

Calculate the work done to stretch an elastic string by 40cm if a force of 10N produces an extension of 4cm in it?

Respuesta :

MathPhys MathPhys

19-05-2019

Answer:

40 J

Explanation:

Work = change in energy

W = 1/2 k (Δx)²

First we need to find the value of k.

F = kΔx

10 N = k (0.04 m)

k = 250 N/m

Solving for work

W = (250 N/m) (0.40 m)²

W = 40 J

Answer Link

Otras preguntas

Which molecule is formed when the protein ferrodoxin transfers electrons to an electron carrier? ATP ADP NADP+ NADPH

what is the lcm of 81 and 17?

Michael cut 1/5 from a round dessert.Isrel cut a pice from the same dissert with an angle measure of 45 degrees who cut the larger piece?

What is the process that adds sediments to a landform called? Erosion Deposition Physical weathering Chemical weathering

What’s the answer??????

The government described in the passage most reflects the features of which type of democracy

Name one way in which soil depends on a biotic factor.

"Hungry hands" is a an example of which literary technique? Saying a poet's hands are "hungry" is an example of free verse poem. Saying a poet's hands are "hung

An electromagnetic is to classify what.. A. Matter B. Energy

can you please help me with these and the others ?