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Homework Answers
ANSWER (48)
The electric field propagates at nearly the speed of light.
EXPLANATION:Electric field travels with nearly the speed of light
not electron or proton.
ANSWER(49)
Series circuit
EXPLANATION:Brightness of bulb is directly proportional to the
current flowing through it.
In the given question brightness of each bulb is same therefore
current is also same.
In the series combination current throughout the circuit is same so
bulbs are connected in series.
ANSWER(50)
Transverse wave
EXPLANATION:A transverse wave is a moving wave whose oscillations
are perpendicular to the direction of the wave or path of
propagation.
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Question 29 1 pts Two charged particles repel each other with a force F. If the charge of one of the particles is doubled and the distance between them is also doubled, then the force will be OF/4. OF/2. OF 0 2F Question 30 1 pts Charge carriers in a metal are electrons rather than...
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Question 39 1 pts A positively charged particle is moving to the right in the plane of this paper. A magnetic field points upward toward the top in the plane of this paper. The magnetic force on the charged points out of the screen toward you. upward in the plane of the screen. to the...
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Question 43 1 pts Rapid changes of a magnetic field induces an electric field. a magnetic field of the same magnitude. a magnetic field of greater magnitude. Question 44 1 pts The Doppler effect causes light that reaches our eyes to O appear red for stars that are moving away from us.. O not be...
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Question 21 1 pts A kilogram block of iron at 40 °C is placed into a kilogram of water at 20°C. The final temperature of the two becomes O more than 30 °C. O at or about 30 °C. o less than 30 °C. Question 22 1 pts At the same temperature, which move with...
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Question 33 1 pts A 60-W light bulb and a 100-W light bulb are each connected to separate 120 V outlet. Which light bulb has more current in it? Both have the same current. O The 100-W bulb. O The 60-W bulb. Question 34 1 pts Two lamps, one with a thick filament and one...
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Question 13 1 pts The force of gravity acts on all apples on an apple tree. Some apples are twice as far from the ground as others. The twice-as-high apples, which are of equal mass as the others, have 1/4 the weight O practically the same weight. 1/2 the weight. Question 14 1 pts For...
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Question 37 1 pts Compared to a single lamp connected to a battery, two identical lamps connected in series to the same battery will carry less current. the same current. O more current. Question 38 1 pts If a compass is moved from the northern hemisphere to the southern hemisphere, its magnetic needle will change...
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Question 1 1 pts Which of the following is a scientific statement? O Matter is filled with undetectable particles. There are things we will never know about. None of the other answers are correct. O There are parts of the universe that will never be found by man. D Question 2 1 pts It takes...
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Question 9 1 pts How many Joules of energy are in one kilowatt-hour? O 60). 3.6 MJ. 60 MJ. O1J Question 10 1 pts Two identical arrows-one with twice the kinetic energy of the other-are fired into a hay bale. The faster arrow will penetrate ... None of the other answers are correct. more than...
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Question 5 1 pts The force required to maintain an object at a constant velocity in free space is equal to the weight of the object. the force required to stop it. O zero. the mass of the object. None of the other answers are correct. Question 6 1 pts A skydiver who weighs 500...
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Question 29 1 pts Two charged particles repel each other with a force F. If the charge of one of the particles is doubled and the distance between them is also doubled, then the force will be OF/4. OF/2. OF 0 2F Question 30 1 pts Charge carriers in a metal are electrons rather than...
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Question 39 1 pts A positively charged particle is moving to the right in the plane of this paper. A magnetic field points upward toward the top in the plane of this paper. The magnetic force on the charged points out of the screen toward you. upward in the plane of the screen. to the...
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Question 43 1 pts Rapid changes of a magnetic field induces an electric field. a magnetic field of the same magnitude. a magnetic field of greater magnitude. Question 44 1 pts The Doppler effect causes light that reaches our eyes to O appear red for stars that are moving away from us.. O not be...
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Question 21 1 pts A kilogram block of iron at 40 °C is placed into a kilogram of water at 20°C. The final temperature of the two becomes O more than 30 °C. O at or about 30 °C. o less than 30 °C. Question 22 1 pts At the same temperature, which move with...
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Question 33 1 pts A 60-W light bulb and a 100-W light bulb are each connected to separate 120 V outlet. Which light bulb has more current in it? Both have the same current. O The 100-W bulb. O The 60-W bulb. Question 34 1 pts Two lamps, one with a thick filament and one...
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Question 13 1 pts The force of gravity acts on all apples on an apple tree. Some apples are twice as far from the ground as others. The twice-as-high apples, which are of equal mass as the others, have 1/4 the weight O practically the same weight. 1/2 the weight. Question 14 1 pts For...
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Question 37 1 pts Compared to a single lamp connected to a battery, two identical lamps connected in series to the same battery will carry less current. the same current. O more current. Question 38 1 pts If a compass is moved from the northern hemisphere to the southern hemisphere, its magnetic needle will change...
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Question 1 1 pts Which of the following is a scientific statement? O Matter is filled with undetectable particles. There are things we will never know about. None of the other answers are correct. O There are parts of the universe that will never be found by man. D Question 2 1 pts It takes...
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Question 9 1 pts How many Joules of energy are in one kilowatt-hour? O 60). 3.6 MJ. 60 MJ. O1J Question 10 1 pts Two identical arrows-one with twice the kinetic energy of the other-are fired into a hay bale. The faster arrow will penetrate ... None of the other answers are correct. more than...
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Question 5 1 pts The force required to maintain an object at a constant velocity in free space is equal to the weight of the object. the force required to stop it. O zero. the mass of the object. None of the other answers are correct. Question 6 1 pts A skydiver who weighs 500...
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