Two carts connected by a 0.05 m spring hit a wall, compressing the spring to 0.02 m. The spring constant k is N

100

m

What is the elastic potential energy stored from the spring's compression?

Choose 1

-3.0J

-0.045 J

0.090 J

0.045 J

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

Preciso de ajuda na parte de termometria e tenho prova amanhã ajuda ae prf