Calculate the force of gravity between a human child
Calculate the force of gravity between a human child (mass = 28 kg) and the planet Mars (mass = 6.4 1023 kg), when Mars is at its closest to Earth (distance = 8. 1010 m).
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After the collision, the pin flies forward (in the positive x direction) with a velocity of 7.3 m/s, and the ball continues forward at 3.2 m/s (in the positive x direction). What was the original velocity of the ball? How do you solve this?
A ball in flight is recorded and analyzed using digital video analysis software. What should the result have been for the horizontal speed (Vx)?
An elastic cord is 67.0 cm long when a weight of 56.0 N hangs from it and is 87.0 cm long when a weight of 76.0 N hangs from it. What is the "spring" constant of this elastic cord?
A proton moves with a velocity of v = (2i 4j + k) m/s in a region in which the magnetic field is B = (i + 2j 3k) T. (i, j and k are unit vectors in the x, y and z directions). What is the magnitude of the magnetic force this charge experiences?
A submarine dives 120.0 m at an angle of 12.0 below the horizontal. What are the horizontal and vertical components of the submarine's displacement?
A force is applied to a 1kg mass and produces 5.5 m/s/s acceleration. What acceleration would be produced by the same force applied to a 6.6kg mass?
The plane encounters a 58.4 m/s wind from the jet stream, which blows from west to east. What is the maximum distance that the plane can travel due west and just be able to return home?
The solid part of the disk has a uniform charge density, (sigma symbol), on its surface. Derive an expression for the total electric charge on the solid part of the disk.
A rocket of mass 4.5 105 kg is in flight. Its thrust is directed at an angle of 53.0° above the horizontal and has a magnitude of 6.80 106 N. Find the magnitude and direction of the rockets acceleration. Give the direction as an angle above th
The brakes on your automobile are capable of creating acceleration of 15 ft/s^2. If you are going 83 mi/hr and suddenly see a state trooper, what is the minimum time required to get your car to 55 mi/hr?
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