72. A 1400-kg car ascends a mountain road at a steady 60 km/h, against a 550-N force of air resistance. If the engine supplies energy to the drive wheels at the rate of 38 kW, what's the slope angle of the road? CH speed

Q: (a) What is the average useful power output (in W) of a person who does 5.00 x 106 J of useful work…

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A: (a) As 1 kilocalorie = 4186 J. Therefore, 1 cal = 4.186 J.  The energy in calorie used per second…

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A: Find the amount of work in joules required to empty the trough by pumping the water over the top.…

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A: The mass flow rate (m) can be converted to its value (say m1) in the SI unit (kg/s) as follows:

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A: Data Given ,  Mass of the ice ( m ) = 3.50 g = 3.50 × 10-3 kg  Radius of the bowl ( r ) = 22.4 cm =…

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Q: A person in good physical condition can put out 100 W of useful power for several hours at a…

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Q: A hydroelectric power facility converts the gravitational potential energy of water behind a dam to…

A: Given data: The mass of water is m=4.3×1013 kg. The average height of dam is h=37.0 m.

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Q: 1. (a) What is the average useful power output of a person who does 7.00 x 106 J of useful work in…

A: average power output is given bywhere, is the work done is the time of work done.

Q: poamany A tank in the shape of an inverted right circular cone has height 6 meters and radius 4…

A: The work(W) required to empty the tank by pumping the hot chocolate over the top of the tank. given,…

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Q: (a) Compute the electrical energy used by a household whose monthly electrical bill is $34, computed…

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A: Introduction: From the law of conservation of the energy remain constant, it can be transform from…

Q: 3. A spring has a resting length of 10 cm. A 40 N force is required to stretch the spring to a…

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Q: A pump needs to lift 540 litres of water per minute to a height of 10.9 m. What is the minimum…

A: Volume of water pumped in 1 minute = 540 liters Mass of water pumped in 1 minute = 540 kg (as mass…

Q: Air bags are used in cars to decelerate the occupants slowly when a car is suddenly decelerated in a…

A: Initial speed, u = 20.0 m/s Final speed, v = 0 Mass, m = 55.0 kg

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Q: Water is lifted out of a well 20.0 mm deep by a motor rated at 1.10 hp. Assuming efficiency 85 % ,…

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