Author Question: A spring with a spring constant of 2500 N/m. is stretched 4.00 cm. What is the work required to ... (Read 227 times)

codyclark · **on:** Jul 29, 2018

A spring with a spring constant of 2500 N/m. is stretched 4.00 cm. What is the work required to stretch the spring?

A)

4.00 J

B)

0 J

C)

1.00 J

D)

3.00 J

E)

2.00 J

Question 2

What power contact lens should be used to correct the vision of a farsighted person whose near point is 80 cm to see something clearly at a distance of 25 cm?

A)

2.8 diopters
B)

-2.8 diopters
C)

-4.0 diopters
D)

-4.2 diopters
E)

4.2 diopters