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A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -46 µC. How many excess electrons does she get, and by how much does her mass increase?
A jellyfish is floating in a water-filled glass tank 1.00 m behind a flat pane of glass 6.00 cm thick and having an index of refraction of 1.50. Where is the image of the jellyfish located
A 205 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30 degrees with respect to the horizontal.
what is work done on package by friction.
at the science olympiad competition a group of middle school students uses a trebuchet that launches a tennis ball from
When an 82.0-kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2 x 10^3 J. By how much does the potential energy of a 17 kg child increase when the child climbs a normal sta..
A block of mass=0.750kg is fastened to an unstrained horizontal spring whose spring constant is k=65.0N/m. The block is given a displacment of 0.220m and then released from the rest.
A capacitor is charged to a potential of 12.0 and is then connected to a voltmeter having an internal resistance of 3.10. estimate the time constant of the circuit
A projectile is fired with an initial speed of 69.0m/s at an angle of 42.8 degrees above the horizontal on a long flat firing range
if a far sighted person has a near point that is 0.600 m from the eye what is the focal length f2 of the contact lenses
A circular wire loop of radius 0.50 m lies in a plane vertical to a uniform magnetic field of magnitude 0.40 T. If in 0.10 s the wire is reshaped from a circle to a square, but remains in the plane, what is magnitude of the average induced emf in t..
A Doppler ultrasound unit is used to measure the motion of blood in a patientâ€TMs artery. What is the maximum speed of the blood in the artery
A 20 g bullet inelastically collides with a 3 kg wooden block at rest. find How much energy is lost in the collision
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