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A tennis ball of mass m = 0.078kg and speedv = 29m/s strikes a wall at a 45? angle and rebounds with the same speed at 45?. What is the magnitude of the impulse given to the ball?
In a circut all six resistors share the same value R. Calculate the equivalent resistance between points A & B
A hydrogen atom has a single proton at its center and a single electron at a distance of approximately 0.0533 nm from the proton
A singly charged ion (charge q = +1.60e-19 C) completes four revolutions in a uniform magnetic field, Calculate the mass of the ion in kilograms
My car has rear defrosters that are made of 13 wires embedded into the rear window. They can melt a thin layer of ice, What is the cross-sectional area of each wire
An object 2.0 cm high is placed 45 cm from a concave mirror of radius 10 cm and radius of curvature 60 cm. Find the location, size, and orientation of the image
a ball rolls down a 100m.the hill is inclined at 60 degrees. if the ball has a rotational inertia of 10kg-m^2 and starts from rest, what is the final rotational speed of the ball?(you must use the conservation of energy)
If the car is now at rest and the pendulum undergoes S.H.M. would its time be shorter of longer than that calculated in (b) explain your answer.
A uniform solid disk with a mass of 28.3 kg and a radius of 0.514 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk, as drawing illustrates.
A diver makes 2.5 revolutions on the way from a 11-m-high platform to the water. find the diver's average angular velocity during a dive
one of your classmate has a friend with a boat. here is your classmate on water-skis being towed. in the absence of friction your classmate (m=62kg) would accelerate at 2.23m/s^2.
What is the minimum diameter mirror on a telescope that would allow you to see details as small as 4.85 km on the moon some 384000 km away
Old MacDonald had a farm, and on that farm he had a gate (see below). The gate is 3m wide and 1.8m high, with hinges attached to the top and bottom. The guy wire makes an angle of 300 with the top of the gate and is tightened by a turn buckle to a..
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