Abaseball catcher extends his arm straight up to catch a fast ball with a speed of 40 m/s. the baseball is 0.145 kg and the catcher’s arm length is 0.5 m and mass 4.0 kg. (a) what is the angular velocity of the arm immediately after catching the ball as measured from the arm socket? (b) what is the torque applied if the catcher stops the rotation of his arm 0.3 s after catching the ball?

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

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

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid