A box has a mass of 3 kg. The box is lifted from the floor and placed on a shelf. If the box gains a Potential Energy of 100 J, then how high
is the shelf?
a 2.34 m
b 1.20 m
C 1.50 m
d 3.40 m
HALP

Explanation:

Potential energy=MGH

100=3×10×H.

H=100/30

H=3.40m

hèllo, sorry i really need some more points so if you need this qustion answered than retype it

the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm