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PHYSICS F/SCI.+ENGR.,CHAPTERS 1-37
5th Edition
ISBN: 9780134378060
Author: GIANCOLI
Publisher: RENT PEARS
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Chapter 25.2, Problem 1BE
To determine
Resistance to be connected across battery of voltage
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A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg · °C , assuming no heat escapes?
Chapter 25 Solutions
PHYSICS F/SCI.+ENGR.,CHAPTERS 1-37
Ch. 25.2 - If 1 million electrons per second pass a point in...Ch. 25.2 - Prob. 1BECh. 25.3 - Return to the Chapter-Opening Question, page 651,...Ch. 25.4 - Prob. 1DECh. 25.4 - Prob. 1EECh. 25.4 - Prob. 1FECh. 25.4 - How many 60-W 120-V lightbulbs can operate on a...Ch. 25.6 - Each channel of a stereo receiver is capable of an...Ch. 25 - What quantity is measured by a battery rating...Ch. 25 - When an electric cell is connected to a circuit,...
Ch. 25 - When a flashlight is operated, what is being used...Ch. 25 - One terminal of a car battery is said to be...Ch. 25 - When you turn on a water faucet, the water usually...Ch. 25 - Can a copper wire and an aluminum wire of the same...Ch. 25 - The equation P = V2/R indicates that the power...Ch. 25 - What happens when a lightbulb burns out?Ch. 25 - If the resistance of a small immersion heater (to...Ch. 25 - Prob. 10QCh. 25 - Explain why lightbulbs almost always burn out just...Ch. 25 - Which draws more current, a 100-W lightbulb or a...Ch. 25 - Electric power is transferred over large distances...Ch. 25 - A 15-A fuse blows repeatedly. Why is it dangerous...Ch. 25 - When electric lights are operated on low-frequency...Ch. 25 - Driven by ac power, the same electrons pass back...Ch. 25 - The heating element in a toaster is made of...Ch. 25 - Is current used up in a resistor? Explain.Ch. 25 - Compare the drift velocities and electric currents...Ch. 25 - A voltage V is connected across a wire of length l...Ch. 25 - Why is it more dangerous to turn on an electric...Ch. 25 - Prob. 1PCh. 25 - Prob. 2PCh. 25 - Prob. 3PCh. 25 - Prob. 4PCh. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - Prob. 10PCh. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - (II) A rectangular solid made of carbon has sides...Ch. 25 - (III) A hollow cylindrical resistor with inner...Ch. 25 - Prob. 63GP
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- Integrated Concepts (a) Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 750-kg electric car be able to supply: (a) To accelerate from rest to 25.0 m/s in 1.00 min? (b) To climb a 2.00 102-m- high hill in 2.00 min at a constant 25.0-m/s speed while exerting 5.00 102 N of force to overcome air resistance and friction? (c) To travel at a constant 25.0-m/s speed, exerting a 5.00 102 N force to overcome air resistance and friction? See Figure 20.44.arrow_forwardGiven that R1 = 2.40 Ω, R2 = 5.10 Ω, R3 = 1.80 Ω, R4 = 3.50 Ω, R5 = 3.60 Ω. (b) Find the equivalent resistance of the combination of R3 and R2,4 (c) Find the equivalent resistance between points a and b. (d) If a potential difference of 6.0 V is applied across a and b, what is the current through R1?arrow_forwardWhat is the minimum number of 63 −Ω resistors that must be connected in parallel to produce an equivalent resistance of 8.2 Ω or less?arrow_forward
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- (a)Calculate the equivalent resistance (in Ω) between points a and b. Ω (b)If a voltage of 41.0 V is applied between points a and b, find the current (in A) in each resistor. 12 Ω A 6.0 Ω A 5.0 Ω A 4.0 Ω A 8.0 Ωarrow_forwardWhat is the terminal voltage (in V) of a large 1.65 V carbon-zinc dry cell used in a physics lab to supply 1.20 A to a circuit, if the cell's internal resistance is 0.300 Ω? How much electrical power (in W) does the cell produce? What power (in W) goes to its load?arrow_forwardOne wire in a high-voltage transmission line carries 1 000 A starting at 700 kV for a distance of 100 mi. If the resistance in the wire is 0.500 Ω/mi, what is the power loss due to the resistance of the wire?arrow_forward
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