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20.64 Electric Power and Energy Assuming 91.0% efficiency for the conversion of electrical power by the...
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the...
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 692-kg electric car be able to supply to climb a 359-m high hill in 2.00 min at a constant 11.3 m/s speed while exerting 569 N of force to overcome air resistance and friction
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the...
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 728-kg electric car be able to supply to do the following? (a) accelerate from rest to 25.0 m/s in 1.00 min A (b) climb a 200-m high hill in 2.00 min at a constant 25.0 m/s speed while exerting 443 N of force to overcome air resistance and friction A
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the...
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 788-kg electric car be able to supply to do the following? (a) accelerate from rest to 25.0 m/s in 1.00 min Correct: 359.4 A Your answer is correct. (b) climb a 200-m high hill in 2.00 min at a constant 25.0 m/s speed while exerting 503 N of force to overcome air resistance and friction A I got (a) I...
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the...
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 678-kg electric car be able to supply to do the following? (a) accelerate from rest to 25.0 m/s in 1.00 min A (b) climb a 200-m high hill in 2.00 min at a constant 25.0 m/s speed while exerting 353 N of force to overcome air resistance and friction A 00 gauge copper wire has a diameter of 9.266 mm....
Problem #10 What is the power in horsepower (hp) required to overcome air resistance given that...
Problem #10 What is the power in horsepower (hp) required to overcome air resistance given that the coeficient of resistance (b) is 2.70 Nt-s2/m2 and the speed (v) is 116 mph (52 m/s), given that the car has a mass (m) of 1,200 k g? Ignore the power required to climb a the AC.) hill Enter value of the Power (P) in hp: (or type E to end): I or run
A lightweight electric car is powered by a series combination of ten 12.0-V batteries, each having...
A lightweight electric car is powered by a series combination of ten 12.0-V batteries, each having negligible internal resistance. Each battery can deliver a charge of 154 A · h before needing to be recharged. At a speed of 82 km/h, the average frictional force due to air drag and rolling friction is 1.34 kN. (a) What must be the minimum power delivered by the electric motor if the car is to travel at a speed of 82 km/h? ________kW...
When its 115-kW (154.1-hp) engine is generating full power, a small single-engine airplane with mass 685...
When its 115-kW (154.1-hp) engine is generating full power, a small single-engine airplane with mass 685 kg gains altitude at a rate of 3.0 m/s (180 m/min, or 590.4 ft/min). What fraction of the engine power is being used to make the airplane climb? (The remainder is used to overcome the effects of air resistance and of inefficiencies in the propeller and engine.)
Name 1) Date More Energy and Power Problems The system starts at rest. What is the...
Name 1) Date More Energy and Power Problems The system starts at rest. What is the speed of the system in the instant before the 10 kg mass hits the floor? LLLLLLLL m = 10kg h=2m m2 = 5kg 2) A 1400 kg sports car accelerates from rest to 95 km/h in 7.4 s. What is the average power delivered by the engine? 3) How fast must a cyclist climb a 6 hill to maintain a power output of 186...
Constants Part A When its engine of power 70 kW is generating full power, a small single-engine airplane with mass 670 kg gains altitude at a rate of 2.4 m/s What fraction of the engine power is bein...
Constants Part A When its engine of power 70 kW is generating full power, a small single-engine airplane with mass 670 kg gains altitude at a rate of 2.4 m/s What fraction of the engine power is being used to make the airplane climb? (The remainder is used to overcome the effects of air resistance and of inefficiencies in the propeller and engine.) Express your answer as a percentage using two significant figures 215 Submit X Incorrect: Try Again; 4...
Driving on asphalt roads entails very little rolling resistance, so most of the energy of the...
Driving on asphalt roads entails very little rolling resistance, so most of the energy of the engine goes to overcoming air resistance. But driving slowly in dry sand is another story. If a 1500 kg car is driven in sand at 5.0 m/s, the coefficient of rolling friction is 0.06. in this case, nearly all of the energy that the car uses to move goes to overcoming rolling friction, so you can ignore air drag in this problem. a.) What...
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 678-kg electric car be able to supply to do the following? (a) accelerate from rest to 25.0 m/s in 1.00 min A (b) climb a 200-m high hill in 2.00 min at a constant 25.0 m/s speed while exerting 353 N of force to overcome air resistance and friction A 00 gauge copper wire has a diameter of 9.266 mm....
Problem #10 What is the power in horsepower (hp) required to overcome air resistance given that the coeficient of resistance (b) is 2.70 Nt-s2/m2 and the speed (v) is 116 mph (52 m/s), given that the car has a mass (m) of 1,200 k g? Ignore the power required to climb a the AC.) hill Enter value of the Power (P) in hp: (or type E to end): I or run
Name 1) Date More Energy and Power Problems The system starts at rest. What is the speed of the system in the instant before the 10 kg mass hits the floor? LLLLLLLL m = 10kg h=2m m2 = 5kg 2) A 1400 kg sports car accelerates from rest to 95 km/h in 7.4 s. What is the average power delivered by the engine? 3) How fast must a cyclist climb a 6 hill to maintain a power output of 186...
Constants Part A When its engine of power 70 kW is generating full power, a small single-engine airplane with mass 670 kg gains altitude at a rate of 2.4 m/s What fraction of the engine power is being used to make the airplane climb? (The remainder is used to overcome the effects of air resistance and of inefficiencies in the propeller and engine.) Express your answer as a percentage using two significant figures 215 Submit X Incorrect: Try Again; 4...
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