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A child pulls a wagon at a constant velocity along a levelsidewalk the child does this by applying a 22 newton force to the wagon handle which is incline at 35 degrees to the sidewalk
Ultraviolet light is incident normally on the surface of a certain substance. The binding energy of the electrons in this substance is 3.44 eV. The incident light has an intensity of 0.063 W/m2
A pendulum consists of a 3 kilogram bob at the end of a 2 meter long light string, suspending the bob from a pivot. Determine the net torque on the bob about the pivot
A block is pushed up an incline. The incline creates an angle of 22.0° with the horizontal. When the block is released, it has an initial velocity of 2.75 m/s. The coefficient of kinetic friction between the block and the inclined plane is 0.450. How..
A lead pellet with a mass of 0.519 g is shot from an air gun at a speed of 118 m/s. It is stopped by a boulder. What is the temperature change of the bullet
A water balloon is launched at a building 24 m away with an initial velocity of 18 m/s at an angle of 50 degrees above horizontal. At what height will balloon strike building
After the first snow of the winter, you and your friends go sledding on the Tecumseh Street overpass of I-35. If the snow is frictionless, the length of the hill is 23 meters, and the angle of the hill is 40 degrees from the horizontal, how fast will..
Two moles of an ideal gas undergo a reversible isothermal expansion from 3.25×10-2 to 4.59×10-2 at a temperature of 21.7. what change of entrophy delta s of the gas.
A small object is 10 cm to the left of a converging lens (f = +5 cm), Find the position and magnification of the final image by calculation
A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping through a vertical distance of 0.303 m. Find the final speed v of the sphere's center of mass
When the starter motor on a car is engaged, there is a 330A current in the wires between the battery and the motor. Suppose the wires are made of copper and have a total length of 1.5m .
In a lightning bolt, a large amount of charge flows during a time of 2.1 x 10-3 s. How much charged has flowed during the lightning bolt?
A proton moves at a speed of 25 m/s perpendicular to the direction of a uniform magnetic field of 1 T, What is the radius of the proton's circular orbit in units of nanometers (1 m = 109 nm)
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