College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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1) Át tesla Model II electric car runs its electric motors on a 400 Volt circuit and each
individual motor's maximum current consumption is 750 Amps. If the maximum mechanical
output of each motor is 270 kWatt (270,000 watts) what is the efficiency of the motor?
2) Two particles both have a positive charge of 3 coulombs each and present an electrostatic
force between them of 100,000,000,000 Newtons (100 x 10° Newtons), (a) what is the
distance between them in meters? (b) are they repealing or attracting each other?
3) (a) Calculate the resistance of aluminum wire with a cross sectional area of 10 mm? and
length of 2 meters, the resistivity of Titanium is 0.027 Ohm*mm2/m. (b) If the resistivity of
copper is much lower, 0.0171 Ohm*mm²/m, how long would a wire of copper, with the
same 10 mm? cross sectional area have to be to have the same resistance as the 2 meter
long aluminum wire?
4) Complete the following items:
An electronic device measures
Reciprocating/Rotational movement is ideal for
chemical reaction on a battery will produce
current devices while a
current
to induce the flow
The higher the voltage on a power supply, the higher
of current through a circuit
A flex sensor is a semiconducting device that measures
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Transcribed Image Text:1) Át tesla Model II electric car runs its electric motors on a 400 Volt circuit and each individual motor's maximum current consumption is 750 Amps. If the maximum mechanical output of each motor is 270 kWatt (270,000 watts) what is the efficiency of the motor? 2) Two particles both have a positive charge of 3 coulombs each and present an electrostatic force between them of 100,000,000,000 Newtons (100 x 10° Newtons), (a) what is the distance between them in meters? (b) are they repealing or attracting each other? 3) (a) Calculate the resistance of aluminum wire with a cross sectional area of 10 mm? and length of 2 meters, the resistivity of Titanium is 0.027 Ohm*mm2/m. (b) If the resistivity of copper is much lower, 0.0171 Ohm*mm²/m, how long would a wire of copper, with the same 10 mm? cross sectional area have to be to have the same resistance as the 2 meter long aluminum wire? 4) Complete the following items: An electronic device measures Reciprocating/Rotational movement is ideal for chemical reaction on a battery will produce current devices while a current to induce the flow The higher the voltage on a power supply, the higher of current through a circuit A flex sensor is a semiconducting device that measures
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