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Phil is standing on a third floor balcony, 10m above the ground. He throws a ball with a speed of 20 m/s at an upward angle of 30 degrees. Where does the ball hit the ground?
football player kicks a ball with a speed of 22.1 m/s at an angle of 46° above the horizontal from a distance of 38 m from the goal line. What is the vertical velocity of the ball at the time it reaches the goalpost
A +6.00-µC charge is moving with a speed of 8.80 104 m/s parallel to a very long, straight wire. Find the magnitude and direction of the force on the charge
A painter is using a ladder to paint the outside of a house. The ladder, which is 8.44 m long and has a mass of 23.7 kg, Calculate the net torque acting on the ladder
One cubic meter (1.00 m3) of aluminum has a mass of 2.70 103 kg, and the same volume of iron has a mass of 7.86 103 kg. Find the radius of a solid aluminum sphere
A 63 resistor is connected in parallel with a 115 resistor. This parallel group is connected in series with a 19 resistor. The total combination is connected across a 15 V battery.
A 0.140-kg baseball is dropped and reaches a speed of 1.20 m/s just before it hits the ground and bounces. What is the change of the ball's momentum during the bounce
A dog trots 3.6 meters east and 5.0 meters north. What are the magnitude and direction of the dog's displacement with respect to the original position.
The rear axle of a truck is 2.5 m long. If the truck is moving at 28 m/s, what emf is induced between the ends of the axle
A certain loudspeaker has a diameter of 45 cm. At what frequency would the wavelength of sound it emits in air be equal to its diameter.
At a distance rl from point charge the magnitude of the electric field created by charge is 248 N/C. After a distance r2 from the charge, field has a magnitude of 132N/C. Find ration r2/r1.
A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration of 2.4 rad/s2. What is the tangential acceleration of the discus thrower at this point
Calculate the centripetal force on the motorcycle.
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