6) In a purely electric vehicle, energy usually is stored in batteries. The stored energy is used to
power the vehicle until the energy is depleted, and then energy has to be stored once more by
recharging the batteries. An electric wheelchair has a mass of 26 kg and is custom–designed for a
person with a mass of 80.0 kg. The stored energy available in its batteries is 2.4106
J. The
wheelchair motor requires a power of 340.0 W for driving under typical conditions. This is
sufficient to propel the person in the wheelchair along at a speed of 24 km/h.
a. Determine the work done by the motor when the wheelchair starts at rest and speeds up to
its normal speed.
b. Determine the maximum distance that the wheelchair can travel on a horizontal surface at its
normal speed, using its stored energy. (Ignore the energy needed for it to speed up when it
starts.)
c. Suppose that 0.023 percent of the power required for driving is expended against drag due
to the flexing of the wheelchair’s soft rubber tires. Calculate the magnitude of the drag force.
Answers: 1
Physics, 22.06.2019 04:50, ineedhelpplz40
Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?
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Physics, 22.06.2019 09:00, carterh166
Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than
Answers: 3
Physics, 22.06.2019 20:00, tasniahussain21
Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?
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6) In a purely electric vehicle, energy usually is stored in batteries. The stored energy is used to...
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