College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A particle is freed from rest in a uniform electric field and then begins traveling under the influence of the electric field.
| Part (a) The particle is a proton. Which is true? Choose the best answer. | ||||||
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| Part (b) The particle is an electron. Which is true? Choose the best answer. | ||||||
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| Part (c) The particle is a proton. What is true about the proton’s path? Choose the best answer. | ||||||
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- A particle is uncharged and is thrown vertically upward from ground level with a speed of 25.0 m/s. As a result, it attains a maximum height h. The particle is then given a positive charge 1q and reaches the same maximum height h when thrown vertically upward with a speed of 30.0 m/s. The electric potential at the height h exceeds the electric potential at ground level. Finally, the particle is given a negative charge =q. Ignoring air resistance, determine the speed with which the negatively charged particle must be thrown vertically upward, so that it attains exactly the maximum height h. In all three situations, be sure to include the effect of gravity.arrow_forwardProblem 10: A particle is released from rest in a uniform electric field and then moves under the influence of the electric field. Part (a) The particle is a proton. Which is true? Choose the best answer. MultipleChoice : 1) Its potential energy decreases and it moves towards lower electric potential. 2) Its potential energy decreases and it moves towards higher electric potential. 3) Its potential energy increases and it moves towards lower electric potential. 4) Its potenti energy increases and it moves towards higher electric potential. Part (b) The particle is an electron. Which is true? Choose the best answer. MultipleChoice : 1) Its potential energy decreases and it moves towards higher electric potential. 2) Its potential energy increases and it moves towards lower electric potential. 3) Its potential energy decreases and it moves towards lower electric potential. 4) Its potential energy increases and it moves towards higher electric potential. Part (c) The particle is a proton.…arrow_forwardOver a certain region of space, the electric potential is V = 4x - 5x²y + 8yz². (a) Find the expressions for the x, y, z components of the electric field over this region. (Use any variable or symbol stated above as necessary.) Ex Ey Ez = = = (b) What is the magnitude of the field at the point P that has coordinates (1.00, 0, -6.00) m? N/Carrow_forward
- Determine the magnitude of an electric field at a point in space given by r = (1.00 m i, 1.50 m j, -1.00 m k) if the electric potential is given by where x, y, z are in meters and V in volts.arrow_forwardThe Question Thor is battling the Frost Giants and he uses his hammer, Mjolnir, to zap them with lightning. Thor unleashes a bolt toward the nearest Giant. Mjolnir has an electric potential of zero and the Frost Giant has an electric potential of either +1.9 × 108 V or −1.9 × 108 V (you will decide during part 1 of the question). In order for electricity to conduct through dry air, the electric field between Thor and the Frost Giant must have a magnitude of 3.2 x 106 V m A negatively charged hydroxide ion (OH¯) in the lightning bolt travels away from Thor. OH¯ ions hold a charge of -1.6 × 10-¹⁹ C and they have a mass of 2.82 × 10-26 kg. The OH¯ ion speeds up from rest to a velocity of 6.3 × 105 m S 1. Does the electric field point from Thor toward the Frost Giant or from the Frost Giant toward Thor? Does this mean that the Frost Giant has a positive electric potential or a negative electric potential?arrow_forwardA particle is uncharged and is thrown vertically upward from ground level with a speed of 24.0 m/s. As a result, it attains a maximum height h. The particle is then given a positive charge +q and reaches the same maximum height h when thrown vertically upward with a speed of 29.7 m/s. The electric potential at the height h exceeds the electric potential at ground level. Finally, the particle is given a negative charge -q. Ignoring air resistance, determine the speed with which the negatively charged particle must be thrown vertically upward, so that it attains exactly the maximum height h. In all three situations, be sure to include the effect of gravity. IN Number i Unitsarrow_forward
- The graph in the figure shows the variation of the electric potential V (measured in volts) as a function of the radial direction T (measured in meters), For which range or value of T is the magnitude of the electric field the largest? (m) O from r = 3 m to r= 4 m from T=0 m to r= 1 m from r = 1 m to r= 2 m O at r= 4 m O at r = 3 m from T = 6 m to r= 8 m O from T = 4 m to r= 6 m Submit Previous Answers Request Answerarrow_forwardA proton is acted on by an uniform electric field of magnitude 203 N/C pointing in the negative y direction. The particle is initially at rest. (a) Determine the work done by the electric field when the particle has moved through a distance of 3.65 cm from its initial position.(b) Determine the change in electric potential energy of the charged particle. (c) Determine the speed of the charged particle.arrow_forwardAn ion, starting from rest, accelerates from point A to point B due to a potential difference between the two points. Does the electric potential energy of the ion at point B depend on (a) the magnitude of its charge and (b) its mass? Does the speed of the ion at B depend on (c) the magnitude of its charge and (d) its mass?arrow_forward
- Two point charges Q, = +4,90 nC and 02 = -2.80 nC are separated by 55.0 cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebraic sign of your answer? Positive work must be done to separate the charges. Negative work must be done to separate the charges.arrow_forwardSuppose an electron orbits a proton in a spherical orbit. Does the electric potential energy of the electron-proton system change as the electron moves, or does it remain constant?arrow_forwardProblem 1: An ion, starting from rest in a constant electric field, accelerates from point A to point B. Does the electric potential energy of the ion at point B depend on (a) the magnitude of its charge and (b) its mass? Does the speed of the ion at B depend on (c) the magnitude of its charge and (d) its mass?arrow_forward
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