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David is driving a steady 31.0m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.60m/s at the instant when David passes.
How far does Tina drive before passing David?
What is her speed as she passes him?
Heather and Jerry are standing on a bridge 45m above a river. Heather throws a rock straight down with a speed of 19m/s. Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Overlook air resistance. How much t..
Three 1.5-V batteries, with internal resistances of 0.01ohms , 0.1ohms , and 1ohms , what is the voltage across each resistor
An observation satellite orbits the planet at a height of 1000. What is the projectile's speed as it passes the satellite
What is the internal resistance of an automobile battery that has an emf of 12.0 V and a terminal voltage of 16.5 V while a current of 7.50 A is charging it
An object is 22 cm in front of a diverging lens that has a focal length of -13 cm. How long in front of the lens should the object be placed so that size of its image is reduced by a factor of 4.
compute how much charge must be placed on the surface of a sphere of radius 0.31 m for the electric potential just above the surface to be 100 V. Assume that the charge is uniformly distributed.
An optical system is designed so that an object for a convex spherical mirror of focal length f=15 cm is 20 cm behind the mirror, determine whether the image is real or vertual, erect or inverted
A loudspeaker of mass 19.00 is suspended the distance of = 1.80 below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of = 3.50. What is the tension in each of the cables.
An airplane is flying with a velocity of 89.0 at an angle of 18.0 above the horizontal. When the plane is the distance 112 directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from the dog wo..
A ball of mass 0.40 kg is fired with velocity 140 m/s into the barrel of a spring gun of mass 2.1 kg initially at rest on a frictionless surface. What fraction of the ball's initial kinetic energy is stored in the spring
A mover's dolly is used to transport a refrigerator up a ramp into a house. The refrigerator has a mass of 108 kg. What is the work done on the refrigerator by the machine
define the magnitude of the torque on the dipole.
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