Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Chapter 7, Problem 2C
Use the result from Challenge land the equation for
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home work .pdf
H.W: In the Boher model of the hydrogen atom an electron moves at
2.19*10'm/s in an orbit of radius 5.29 10" centered on a proton. (a)what is
the centripetal force on the electron? (b)what is the number of revolutions
made each second?
Ans. (a)9.06 10"m/s (b= 6.58 + 1015 1/s
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home work .pdf >
H.W: In the Boher model of the hydrogen atom an electron moves at
2.19 10'm/s in an orbit of radius 5.29 10" centered on a proton. (a)what is
the centripetal force on the electron? (b)what is the number of revolutions
made each second?
Ans. (a)9.06 10"m/s (b= 6.58 105 1/s
H.W: A ball is thrown with an initial speed voat an angle 0 below the
horizontal from rooftop 44m above the ground. It lands 2sec later at a point
32m from the base of the building. Find vo and 6
Ans. 0 = -37.32v, = 20. 1m/s
What is the speed of the proton if it is not deflected? (that is, it moves in a straight line though the fields)
If the length of the plate is 1.9m then how much time the proton will take to travels that length?
If the proton moves with twice this speed, what is the net force in unit vector notation?
x,y,z component of net force
Chapter 7 Solutions
Inquiry into Physics
Ch. 7 - Describe one promising explanation for how...Ch. 7 - Loud thunder claps frequently accompany lightning...Ch. 7 - What does the term fibrillation mean in connection...Ch. 7 - Prob. 1PIPCh. 7 - Prob. 2PIPCh. 7 - Prob. 1MIOCh. 7 - Prob. 2MIOCh. 7 - Prob. 1QCh. 7 - Prob. 2QCh. 7 - Prob. 3Q
Ch. 7 - Prob. 4QCh. 7 - Prob. 5QCh. 7 - (Indicates a review question, which means it...Ch. 7 - Prob. 7QCh. 7 - Prob. 8QCh. 7 - Prob. 9QCh. 7 - Prob. 10QCh. 7 - Prob. 11QCh. 7 - Prob. 12QCh. 7 - (Indicates a review question, which means it...Ch. 7 - Prob. 14QCh. 7 - (Indicates a review question, which means it...Ch. 7 - Prob. 16QCh. 7 - (Indicates a review question, which means it...Ch. 7 - (Indicates a review question, which means it...Ch. 7 - Prob. 19QCh. 7 - (Indicates a review question, which means it...Ch. 7 - (Indicates a review question, which means it...Ch. 7 - (Indicates a review question, which means it...Ch. 7 - (Indicates a review question, which means it...Ch. 7 - Prob. 24QCh. 7 - Prob. 25QCh. 7 - (Indicates a review question, which means it...Ch. 7 - (Indicates a review question, which means it...Ch. 7 - (Indicates a review question, which means it...Ch. 7 - Prob. 29QCh. 7 - (Indicates a review question, which means it...Ch. 7 - (Indicates a review question, which means it...Ch. 7 - Prob. 32QCh. 7 - Prob. 33QCh. 7 - Prob. 34QCh. 7 - (Indicates a review question, which means it...Ch. 7 - Two charged particles exert an electric force of...Ch. 7 - What would the separation between two identical...Ch. 7 - A particle having a positive charge of C...Ch. 7 - During 30 seconds of use, 250 C of charge flow...Ch. 7 - A lightning stroke lasts 0.05 s and involves a...Ch. 7 - A current of 0.7 A goes through an electric motor...Ch. 7 - A calculator draws a current of 0.0001 A for 5...Ch. 7 - Prob. 8PCh. 7 - A 120-V circuit in a house is equipped with a 20-A...Ch. 7 - . The resistance of each brake lightbulb on an...Ch. 7 - . The lightbulb used in a computer projector has a...Ch. 7 - Prob. 12PCh. 7 - Prob. 13PCh. 7 - Prob. 14PCh. 7 - . An electric eel can generate a 400-V, 0.5-A...Ch. 7 - . An electric train operates on 750 V. What is its...Ch. 7 - . All of the electrical outlets in a room are...Ch. 7 - . Your cell phone typically consumes about 400 mW...Ch. 7 - . A car’s headlight consumes 40 W when on low beam...Ch. 7 - . Find the current that flows in a 40-W bulb used...Ch. 7 - . An electric clothes dryer is rated at 4,000 W....Ch. 7 - . A clock consumes 2 W of electrical power. How...Ch. 7 - . Which costs more, running a 1,200-W hair dryer...Ch. 7 - . A representative lightning strike is caused by a...Ch. 7 - Prob. 25PCh. 7 - . A certain electric motor draws a current of 10 A...Ch. 7 - . The generator at a large power plant has an...Ch. 7 - . A lightbulb is rated at 60 W when connected to...Ch. 7 - . About 40,000 J of energy is stored in a typical...Ch. 7 - . An electric car is being designed to have an...Ch. 7 - Prob. 31PCh. 7 - Compute the electric force acting between the...Ch. 7 - Use the result from Challenge land the equation...Ch. 7 - Prob. 3CCh. 7 - Using your understanding of the nature of internal...Ch. 7 - The current that flows through an incandescent...Ch. 7 - Prob. 6CCh. 7 - Imagine a company offering a line of hair dryers...Ch. 7 - Prob. 8CCh. 7 - Combine Ohm’s law and the equation for power...Ch. 7 - A defibrillator sends approximately 0.1 C of...
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- Review A system consists of a planet and a star, with the planet in an elliptical orbit. As the planet orbits, which of these quantities change because they depend on the mass of the planet? Explain your answers. a. Gravitational potential energy b. Gravitational potential c. Kinetic energy d. Gravitational force e. Gravitational fieldarrow_forward(a) At what speed will a proton move in a circular path of the same radius as the electron in Exercise 22.12? (b) What would the radius of the path be it the proton had the same speed as the electron? (c) What would the radius be if the proton had the same kinetic energy as the electron? (d) The same momentum?arrow_forward(a) At what speed will a proton move in a circular path of the same radius as the electron in the previous exercise? (b) What would the radius of the path be if tlie proton had the same speed as the election? (c) What would the radius be if the proton had tlie same kinetic energy' as die electron? (d) The same momentum?arrow_forward
- In one model of the hydrogen atom, the electron revolves in a circular orbit of radius 5.3 x 10-11 m. Calculate the speed of the electron.arrow_forwardA positively charged ball is dropped into a tube with another positively charged ball at the bottom. It falls a certain distance before turning around. Draw an energy bar chart consistent with this. Take the initial point to be at the top immediately after release and the final point where it turns around. Write an energy equation for this situation, indicating various distances on a sketch. State what your system is and any assumptions you needed to make. Draw qualitatively accurate force diagrams for the dropped ball for the initial and final positions. Write Newton’s 2nd Law equations for the initial and final positionsarrow_forwardIn a hydrogen atom, the electric force is the centripetal force. Determine speed of an electron in orbit around a proton if the distance between them is 5.29 x 10-11 m. The mass of an electron is 9.11 x 10-31 kg.arrow_forward
- Hi, can anyone solve this with a detailed explanation. The electron in a hydrogen atom is initially at a distance 2.12 Å from the proton, and then moves to a distance 0.529 Å from the proton. (a) Calculate the change in the force between the proton and the electron. (b) Calculate the change in the potential energy between the proton and the electron. (c) Calculate the change in the velocity of the electron.arrow_forwardA charged ion with charge of +2.65 x 10-19 C and a mass of 3.15 x 10-27 kg is held halfway between two oppositely charged plates with voltage of 3.06 x 104 V. What is the maximum speed the ion will attain when let go and allowed to accelerate? Provide your answer to three significant digits, without units. Answer:arrow_forwardA positively charged particle of mass 1.92 x 10-27 kg initially moves left to right long the x axis at a speed of 4.02 x 103 m/s. It moves into an electric field, which points in the negative x direction, and travels a distance of 0.41 m before coming to rest. What acceleration magnitude does the particle experience? (Ignore gravity) Round your answer to 2 decimal places.arrow_forward
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