The latent heat of fusion for water is 33.5 × 10⁴ j/kg, while the latent heat of vaporization is 22.6 × 10⁵ j/kg. what mass m of water at 0 °c must be frozen in order to release the amount of heat that 2.48 kg of steam at 100 °c releases when it condenses?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?