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A certain athlete consistently throws a javelin at a speed of 28meter per second. Find his best distance in meter? Neglect friction.
A rope attached to a 20.0kg wood sled pulls the sled up a 20.0? snow-covered hill. at what value of the tension does the box slip
A square wire loop with 1.87 m sides is perpendicular to a uniformmagnetic field, with half the area of the loop in the field asshown in the figure 30-44.
A cylindrical tube is closed at both ends by glass plates 10.0mm thick. if the inside length of the tube is 7.5 cm, what is the total optic path length between the outer surfaces
a 5.00-kg bullet is fired with a velocity of 100.0 m/s toward a10.00 kg stationary solid block resting on a frictionless surface. what is the change in momentum of the bullet if it is embeddedin the block
A skier starts from rest at the top of a hill that is inclined at 10.2° with the horizontal. The hillside is 150 m long, and the coefficient of friction between snow and skis is 0.0750. At the bottom of the hill, the snow is level and the coefficient..
An automatic rifle fires 50 gram bullets at aspeed of 900 m/s at a rate of 50 bullets per second. What is the average recoil force against the gun's mount
Calculate the kinetic energies of two uniform solid cylinders, each rotating about its central axis. They have the same mass, 2.75 kg
A 385-kg cannon, sliding freely on a frictionless horizontal plane at a speed of 7.13 m/s, shoots a 13.5-kg cannonball at an angle of 53.3° above the horizontal. What is the velocity of the ball relative to the cannon
A violinist places her finger so that the vibrating section of a 1.20 g/m string has a length of 40.0 cm, then she draws her bow across it. A listener nearby in a 20 ^circ {rm C} room hears a note with the wavelength of 30.0 cm. What is the tensio..
24.0g of copper pellets are removed from a 300oC oven and immediately dropped into 110mL of water at 25.0oC in an insulated cup. What will the new water temperature be
A spherical balloon has a radius of 6.75m and is filled with helium. The density of helium is 0.179 kg/m3, Determine the largest mass of cargo the balloon can lift
A plumb bob is suspended from a point in the Northern hemisphere at a latitude of 45o. Find the angle this plumb bob makes
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