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Question: The tennis ball has a mass of 5.7× 10-2 kg and has the initial speed of 2 m/s. Calculate the speed of the ball when it hits the ground. Ignore air resistance?
A charge of q = +7.32 ?C is located in an electric field. The x and y components of the electric field are Ex = 5.54E+3 N/C and Ey = 7.90E+3 N/C, What is the magnitude of the force on the charge
in a rectangular coordinate system a positive point charge q 2.50 nc is placed at the point x 0.160 m y 0 and an
A hardworking ant must supply 0.00655 N to pull a small piece of fruit at constant velocity over a distance of 8.00 cm up a small hill to the entrance of the colony. Use the work-energy theorem to calculate the mass of the piece of fruit in grams
What is the maximum bending stress in an A36 structural steel S 15 x 50 beam of 24-ft span if it supports a uniform load of 800 lb in addition.
You clamp a straight ramp of length 51 cm making an angle of 18.0° with the horizontal table top, What time elapses from when the car leaves the ramp until it reaches the floor
A ball of mass 0.190 kg has a velocity of 1.47 i m/s; a ball of mass 0.305 kg has a velocity of -0.392 i m/s.They meet in a head-on elastic collision. Find the velocity of their center of mass
At t = 0, a 14.0 V battery is connected to a 1200 ? resistor in series with a 6.30 ?H inductor. What is the current after one time constant
Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which charge is continuously deposited by a moving belt, What is the maximum potential of the dome
A block of mass 2.50 kg is pushed 2.60 m along a frictionless horizontal table by a constant 20.0 N force directed 25.0° below the horizontal. Determine the work done by the net force on the block
A 2.50 meter long copper wire has a mass of 0.25 kilograms. A magnetic field of 0.15 Teslas is oriented horizontally from south to north. What is the minimum current in the rod that would allow it to "float" in this magnetic field? What is the direct..
A river flows due east with aspeed of 2.2 m/s. A man steers amotorboat across the river. His velocity relative to the water is3.9 m/s due south. What is his velocity relative to the earth
Three identical stars of mass 7.46 ×1024 kg are located at the vertices of an equilateral triangle with side 7500 km. At what speed should they move if they all revolve under the influence of one another's gravitational force in a circular orbit circ..
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