A tray for making ice cubes holds 30 g of water. The specific latent heat of fusion of ice is 3.3 × 10' / . How much thermal energy is removed from the water at 0°C to change it into ice at 0°C?

An astronaut on the moon throws a baseball upward. the asatronaut is 6ft, 6in. tall, and the initial velocity of the ball is 30ft per second. the heigh s of the ball in feet is given by the equation s = -2.7^2 + 30t + 6.5, where t is the number of seconds after the ball was thrown. after how many seconds is the ball 16ft above the moon's surface?