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A boy of mass 37.9 kilogram jumps off a diving platform 1.61 meter high. He lands in the water and goes under a distance 1.25 meter, before he stops. Find the magnitude of the resistive force of the water on the boy?
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Question: In a physics laboratory experiment, a coil with 180 turns enclosing an area of 13.5 cm^2 is rotated during the time interval 5.00Ã-10-2 s from a position in which its plane is perpendicular to Earth's magnetic ...
When scared, a nine-banded armadillo will jump straight up in the air. The armadillo launches itself upward from the ground with a speed of v0 = 3.81 m/s. How long will the armadillo remain more than 0.033 m off the grou ...
As part of a fiendish plan, the physics student society decided to use a catapult to launch a water balloon toward the engineering quad. The catapult launches the balloon ( m =4.24 kg) with an initial speed of v 0=18.2 ...
How are chemical and physical changes different. What are some demonstrations that you might do to help your students differentiate between a chemical and physical change?
Question: A proton moves along the x-axis with vx=1.0 x 10 7 m/s. a) As it passes the origin, what are the strength and direction of the magnetic field at the (1 cm, 0 cm, 0 cm) position? Give your answer using unit vect ...
A 0.900 kg hammer is moving horizontally at 9.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. Calculate the duration of the impact. (s) What was the average force exerted on the nai ...
Question: A projectile is launched at an angle of 30 deg.Is there any point on the trajectory where V and A are parallel to each other? Is there any point where V and A are perpendicular to each other? The response must ...
Question: Three identical very dense masses of 5200kg each are placed on the xaxis. One mass is at x1 = -110cm , one is at the origin, and one is at x2 = 310cm . What is the magnitude of the net gravitational force Fgrav ...
An inflatable life raft is released from an air plane at 500 m altitude, in level flight, with an air speed of 20 m/s in the horizontal direction. How long before the raft strikes the water? How far from the release poin ...
Question: A certain brand of freezer is advertised to use 880 kW*h of energy per year. A) Assuming the freezer operates for 6 hours each day, how much power does it require while operating? B) If the freezer keeps its in ...
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