9. The acceleration of an object is inversely proportional to the net force acting on it. True / False 10. The SI Unit of electric field is N/C. True / False 11. Distance, velocity and acceleration are all vector quantities. True /False 12. If two resistors have the same voltage drop in a series circuit, it means they are of equal value. True / False

9. The acceleration of an object is inversely proportional to the net force acting on it. True / False 10. The SI Unit of electric field is N/C. True / False 11. Distance, velocity and acceleration are all vector quantities. True /False 12. If two resistors have the same voltage drop in a series circuit, it means they are of equal value. True / False

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 15PE: The planetary model of the atom pictures electrons orbiting the atomic nucleus much as planets orbit...

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The planetary model of the atom pictures electrons orbiting the atomic nucleus much as planets orbit the Sun. In this model you can view hydrogen, the simplest atom, as having a single electron in a circular orbit 1.061010 m in diameter. (a) If the average speed of the electron in this orbit is known to be 2.20106 m/s, calculate the number of revolutions per second it makes about the nucleus. (b) What is the electron's average velocity?
Integrated Concepts A light-rail commuter train draws 630 A of 650-V DC electricity when accelerating, (a) What is its power consumption rate in kilowatts? (b) How long does it take to reach 20.0 m/s stalling from rest if its loaded mass is 5.30 1()4 kg, assuming 95.0% efficiency and constant power? (c) Find its average acceleration. (d) Discuss how the acceleration you found for the light-rail train compares to what might be typical for an automobile.
A clock battery wears out after moving 10,000 C of charge through the clock at a rate of 0.500 mA. (a) How long did the clock run? (b) How many electrons per second flowed?
IV. GENERALIZATION: Situational Analysis ******* ###### ⠀⠀⠀⠀⠀⠀ |||||||||||| ⠀⠀⠀⠀⠀⠀ 1.11 m. High rise buildings usually have a lightning rod system to protect the infrastructure from lightning. Using the topic discussed, give a simple explanation of how lightning rods protect buildings.
6. Which of the following is not the same as 1 watt? A. 1 joule/second B. 1 ampere/volt 7. We use_ to control electric current in a circuit. B. insulator C. 1 ampere-volt D. 1 ohm-(ampere)² A. resistor C. conductor D. wire 8. Temperature coefficient of resistance is expressed in terms of A. ohms /°C 9. Two aluminium conductors have equal length. The cross-sectional area of one conductor is four B. mhos /°C C. ohms / ohms °C D. mhos /ohm °C times that of the other. If the conductor having smaller cross-sectional area has a resistance of 100 ohms the resistance of the other conductor will be C. 50 ohms 10. Which of the following resistive materials has the lowest temperature coefficient of resistance? C. aluminum A. 400 ohms B. 100 ohms D. 25 ohms A. nichrome B. silver D. copper
A. Ampere 7. The circuit with higher resistance will allow less charge to flow. D. Not enough information A. True B. False C. Sometimes 8. What is the unit of measurement to measure the movement of charge (electron) through a wire? A. Volt B. Ohm C. Current D. Ampere 9. The current-voltage relationship can be represented through a graph. D. parabolic B. linear C. non-linear A. hyperbola 10. Which resistor should I connect to a circuit to get the least amount of current? C. 20-Q resistor D. 25-02 resistor A. 10-02 resistor B. 18-Q resistor 1. A 10-ohm resistor is powered by a 5-V battery. What is the resulting current? A. 0.5 A B. 10 A C. 15 A D. 50 A 2. The resistance in a carbon filament lamp... A. decreases B. doubled C. increases If you increase the voltage across a resistor, what will happen to the current? The current will D. remains the same D. stay the same.
2. Electric current is measured in ampere (A). If an ampere is expressed as a flow of charge in coulombs per seconds (C/s), how many electrons passes at a given point for a conductor carrying 8A current in 1.5 minute? The charge on an electron is approximately 1.6 x 10 -19 C.
Which of the following best describes drift velocity? a.The speed at which electrical signal traverses a conductor b. The speed at which charges traverse a conductor c. The speed at which neutral atoms traverse a conductor d.The speed of sound waves in a conductor e. The speed of light in a conductor
a.The ammeter will draw a significant current from the power supply. b.The voltmeter is in correct position for measuring the voltage of power supply. c.The ammeter is in correct position for measuring the current through the resistor. d.No current will flow through the ammeter.
what is another form of the unit voltage? a. J times c b. N/C c. J/C d. V/m
1. An ipod runs for 8 hours while drawing 0.05 amps of current, how many coulombs of charge does the ipod contain? 2. A student leaves a 5 amp stereo on in their car and drains the 10000 coulomb battery. How long did the stereo stay on for?
e2. 18. Which of the following correctly shows the circuit diagram for two D-cells of a battery pack used to power a series circuit that contains twolight bulbs?