2. Explain how Newton's second law applies to a crane that is capable of lifting various objects with different masses. (2)3. A race car travels around a circular track that is 12.5 km in circumference. If the average speed of the car is 112m/s how long will it take to complete one lap? (3)0. A power plant produces 1200 MW of power that is sent through a transmission line with a resistance of (2)/(3)Omega . A transformer is used that has 120 windings I in the primary circuit and 600 windings in the secondary circuit. If this changes the power loss to 0.20% what are the current and potential difference both before and after the transformer change? Assume there is no power loss in the transformer. (13.5,13.6) T/IAt time t_(1) a cart with moss m being pushed on a straight, level track has speed o. A short time later at l_(2) the cart has speed So Which of the following expressions is equal to the average power delivered to the cart between time t_(1) and t_(2) A 4mv^2 D (9)/(2)mv^2 C (4mv^2)/(t_(2)-t_(1)) D (4mv^2)/(2(a-t_(1)))How many "shocks"(drops) is the material subjected to in the Liquid Limit test? Blank 1PREV 878889909192939495 NEXT
