If you add 700 kj of heat to 700 g of water at 70 degrees c, how much water is left in the container? the latent heat of vaporization of water is 22.6*10^5 j/kg.

a. 429 g
b. 258 g
c. 340 g
d. 600 g

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

Which best represents the law of conservation of mass ?

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline