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The school bus picks up Brian in front of his house and takes him on a straight-line 3.6 km bus ride to school in the positive direction. He walks home after school. If the front of Brian's house is the origin,
(a) what is the position of the school,
(b) what is his displacement on the walk home, and
(c) what is his displacement due to the combination of the bus journey and his walk home? answers in km
A moving particle encounters an external electric field that decreases its kinetic energy from 9910 eV to 6840 eV as the particle moves from position A to position B. Determine the charge of the particle
Two point charges q and 4q are at x=0 and x=L, respectively, and free to move. A third charge is placed so that the entire three-charge system is in static equilibrium. What is the magnitude of the third charge? What is the x-coordinate of the thi..
A 0.025 kg golf ball moving at 21.0 m/s crashes throughout the window of a house in 2.0 10-4 s. After the crash, ball continues in the same direction with a speed of 10 m/s. assuming the force exerted on the ball by the window was constant, what w..
What is the rotational kinetic energy of the Earth? Use the moment of inertia you calculated in Part A rather than the actual moment of inertia given in Part B.
A battery with an emf of 12.0 V shows a terminal voltage of 11.8 V when operating a circuit with four light bulbs each rated at 4 W (at 12.0 V) which are connected in parallel. What is the current in each bulb
A skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 55° above horizontal.
A plate carries a charge of -3.7 C, while a rod carries a charge of +1.9 C. How many electrons should be transferred from the plate to the rod, so that both objects have the same charge.
For the circuit shown below, C = 0.113 µF and = 103 V. The switch throw is rotated to contact b after having been at contact for the long time, and 3.47s later the potential difference across the capacitor is equal to 1/2. What is the value of R.
A 690 g wood block is at rest on a frictionless table, when a 27 g bullet is fired into it. what was the original speed of the bullet
A 29.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 85.0 N and is directed at the angle of 30.0° above the horizontal. Find out the coefficient of kinetic friction.
What is the total force on an object if 47.2 pounds upward, and 59.3 lb to the right are acting on it? answer sketching the diagram and show mathematical calculation.
Two points in a rectangular coordinate system have the coordinates (4.7, 2.5) and (-2.5, 4.7), Determine the distance between these points
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