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A pitcher claims he can throw a 0.160-kg baseball with as much momentum as a 2.50-g bullet moving with a speed of 1.50 103 m/s.
(a) What must the baseball's speed be if the pitcher's claim is valid?
m/s
On her way to visit Grandmother, Red Riding Hood sat down to rest and placed her 1.2 kg basket of goodies beside her. What is the acceleration of the basket
A clock in a spaceship is observed to run at a speed of only 3/5 that of a similar clock at rest on Earth. How fast is the spaceship moving
Ceres, the smallest identified dwarf planet in the Solar System, has a radius R = 480 km, Use these numbers to calculate the escape speed from the surface of Ceres
A flat sheet of crystalline quartz has a thickness of 1.0 cm. It is on top of a flat sheet of diamond that has a thickness of 1.2 cm. how far would it have traveled in a vacuum
A 2.0 kg block is kicked up a wooden ramp that is inclined at a 30? angle to the horizontal. How long does the entire up and down trip take
A circular loop carries a current I. It is placed in a constant magnetic field in such a way that the field lines are perpendicular to the lane of the circle
You are to determine the power rating of the motor in an elevator system. The elevator (with a full load) weights 2000 kg and is required to move upward 3 m/sec at constant speed.
Sewage at a certain pumping station is raised vertically by 5.30 m at the rate of 1 920 000 liters each day. The sewage, of density 1 050 kg/m3, Find the output mechanical power of the lift station
A ball is thrown from the top of a building upward at an angle of 35? to the horizontal and with an initial speed of 15 m/s. How long is the ball in flight
In a television tube, electrons travel down the tube and strike the fluorescent material at the end of the tube. Their impact with this material causes light to be emitted, How long does the acceleration take
A device called a velocity selector is a tube with a crossed electric and magnetic fields set up so that the particle entering with a velocity v_0 along the axis of the tube experiences zero net force.
A long pipe of outer radius 3.60 cm and inner radius 3.06 cm carries a uniform charge density of 3.22 mC/m3. calculate the electric field r = 7.56 cm from the centerline of the pipe
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