1 point 2A student pushes a box of books with a force of 10 N and moves it
200cm. What work have they done? Use the equation: work done (J) =
force (N) x distance (m)
a) 2100
b) 1903
c) 20
d) 2000 J

d

Explanation:

You multiply the force used by the distance moved to get

the work done.

10N ×200cm

2000J

Option d

Explanation:

2000 J is correct answer

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j