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It takes an elevator 2.4 min to raise a vehicle with a mass of 410 kilogram from the floor to a height of 6 meters. Find what size motor does it take to do the job?
A heating element in a stove is designed to dissipate 3380 W of heat when it is connected to 200 V. Assuming that the resistance is constant, Calculate the power the heating element dissipates
A simple pendulum is swinging back and forth during a small angle, its motion repeating every 1.15 s. How much longer must the pendulum be made in order to increase its period by 0.20 s?
A 145 g copper bowl contains195 g of water, both at 20.0°C. Avery hot 300 g copper cylinder is dropped into the water, causing the water to boil, by 5.55 g being converted to steam. The final temperature of the system is 100°C. Neglect energy transfe..
What is the electric force felt by the first charge? What is the electric force felt by the second charge? What are two types of polarization?
A small ball rolls horizontally off the edge of a tabletop that is 1.15 m high. What is its speed at the instant it leaves the table
Heat is extracted from a certain quantity of steam at 100 degrees celsius. Thus the steam changes into ice at 0 degrees celsius. If this energy were used to accelerate the ice from rest, what would be the linear speed of the ice.
A traveler first drives 18.8 km east, then 31.8 km southeast, and finally 11.1 km south. Find the traveler's total displacement
Two capacitors are connected to a battery. The battery voltage is V = 70 V, Determine the total energy stored by the two capacitors
a 3.0-kg block is connected to two ideal horizontal springs having force constants k1 14.0nbspncm and k2 20.0 ncm see
certain animals such as kangaroos and cats are well known for their jumping abilities. what would you hypothesize about
Two physical pendulums ( not simple pendulum) are made from sticks that are suspended from the ceiling at one end. The sticks are uniform and are identical in all respects, except one is made of wood (mass = 0.17 kg )and the other of metal (mass =..
A compressed-air cylinder is known to fail if the pressue exceeds 100 atm. What is the pressure inside the cylinder during the fire
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