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Dinah is playing cards with her friends and it is her turn to deal. A card has a mass of 2.3 g and it slides 0.35 m along the table before it stops. If the coefficient of kinetic friction between the card and the table is 0.24 what was the initial speed of the card as it left dinas hand?
An 150kg man climbs up a 1m high flight of stairs, What is the increase in the gravitational potential energy of the man-earth system
A rectangular loop is 1.2 m wide and 0.80 m tall and carries 0.50 A of current clockwise. Find the net force and torque on the rectangular loop
Pretend a person can walk only at a certain pace no faster, no slower. If you time her uninterrupted walk across a room of known length, you can compute her walking speed.
A 130- baseball, moving along the axis with speed 35 , strikes a fence at a 45 angle and rebounds along axis with unchanged speed Give the - and - components of its change in momentum.
The distance between the objective and eyepiece lenses in a microscope is 20 cm. The objective lens has a focal length of 5.0 mm. What eyepiece focal length will give the microscope
Two negative point charges are separated by 11.0cm and feel a mutual repulsive force of 1.85?N . The charge of one is three times that of the other. How much charge does each have? in nanocoulumbs
The dial on an AM radio contains numbers ranging from about 530 to about 1600. What is the corresponding range of wavelengths
The average density of a fish can be found by first weighing it in air and then finding the scale reading for the fish completely immersed in water, what is the average density of the fish
When the displacement of a mass on a spring is 0.445 of the amplitude of its oscillation, what fraction of the mass's energy is kinetic energy
You have a small electromagnet that consumes 320 W from a residential circuit delivering 115 V at 50.0 Hz. What is the internal resistance of the electromagnet
A satellite of mass 2 250 kg is initially placed in an orbit about the Earth such that its period is 8.00 h. What was the original radius of orbit of the satellite
question1a 60.0-kg projectile is fired at the angle of 30.0deg above the horizontal with an initial speed of 1.28 102
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