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1.a) What is the (average) power needed to accelerate a car of mass m=1550 kg from...

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Physics

1.a) What is the (average) power needed to accelerate a car ofmass m=1550 kg from zero to 60 mph in 7.1 s?

b) Which simplifications did you make in that short calculation,i.e. what did you neglect?

2.The current BC hydro rates are 6.55 cents per kWh. If you havea desktop computer that uses 200 W (on average), how much does itcost you per month to run it for 6 hours per day?

3.

An elevator car has a mass of 1600 kg and is carrying passengerswith a combined mass of 200 kg. A constant friction force of 4000 Nis acting.

a) How much power must be delivered by the motor to lift the carwith the passengers at a constant speed of 3m/s?

b) How much power must be delivered by the motor when the carwith the passengers is moving with speed v = 3m/s, and it issupposed to provide an acceleration of 1.00m/s2?

Answer & Explanation Solved by verified expert
4.2 Ratings (623 Votes)
1 given m 1550 kg v 60 mph    See Answer
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