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An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, each of which is 54.0 m long and has a resistance of 0.104 ? per 300 m.
(a) Find the potential difference at the customer's house for a load current of 104 A.
V
(b) For this load current, find the power delivered to the customer.
kW
After the engine is ignited, what is the rocket's speed when the spring has stretched 19.00 cm past its natural length? What would be the rockets speed after travelling the distance if it weren't tied down to spring.
The highest theoretical efficiency of a gasoline engine, based on the Carnot cycle, is 0.300 or 30.0%. what is the temperature in the cylinder immediately after combustion
Astronaut Ann wishes to travel from one side of her spaceship to the other side so she pushes herself away from a wall, What is Ann's speed relative to Bob as she drifts across the spacehip
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Two blocks with masses m = 16.7 kg and M = 70.1 kg are not attached. The coefficient of static friction between the blocks is 0.45 but the surface beneath M is frictionless. What is the minimum force F required to hold m against M?
Water flows from a fire truck through a hose that is 11.7 cm in diameter and has a nozzle that is 2 cm in diameter. Determine the minimum gauge pressure in the trucks water tank
An air mass has a temperature of 68F at 970hPa with a mixing ratio of 5 g kg-1. Without any condensation or mixing the air mass now has a temperature of 50F and a pressure of 750hPa.
A uniform ladder of length L and mass 5 kg rests against a smooth, frictionless, vertical wall. Find the minimum angle,between the ladder and the ground at which the ladder will not slip
two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring-loaded gun that is mounted on a table. How far should Rhoda compress the spring to score a direct hit
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