The temperature of 1.94 kg of water is 34 °c. to cool the water, ice at 0°c is added to it. the desired final temperature of the water is 11 °c. the latent heat of fusion for water is 33.5 × 10^4 j/kg, and the specific heat capacity of water is 4186 j/(kg·c°). ignoring the container and any heat lost or gained to or from the surroundings, determine how much mass m of ice should be added?

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25º, b) el tiempo que el balón permanece en el aire.