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A horizontal force of 750 N is needed to overcome the force of static friction between a level floor and a 250-kg crate. If g = 9.8 m/s^2, what is the coefficient of static friction?
What are the displacement and velocity of the point on the cord. What is the magnitude of the acceleration of one of the liners toward the other because of their mutual gravitational attraction.
Two charges are placed on the x axis. One of the charges (q1 = +6.95C) is at x1 = +3.00 cm and the other (q2 = -27.3C) is at x2 = +9.00 cm. Find out the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b..
A 40.0 kg box initially at rest is pushed 4.05 m along a rough, horizontal floor with a constant applied horizontal force of 145 N. find the work done by the applied force
A transformer with 340 turns in its primary coil and 30 turns in its secondary coil is designed to deliver an average power of 1390 W with a maximum voltage of 67 V
Take element Z = 70 from the periodic table. Ionize it 69 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron?
Calculate the Q value in MeV for the double Beta decay of 128Te (atomic mass 127.904461 a.m.u.) to 128Xe (atomic mass 127.903531 a.m.u.).
An aluminium cup of 180 cm3 capacities is totally filled with glycerin at 18° C. How much glycerin (in cubic cm) would spill out of the cup if temperature of both the cup and glycerin is increased to 33° C? (The linear expansion coefficient of alumin..
A cyclist is coasting at a steady speed of 16m/s but enters a muddy stretch where the effective coefficient of friction is 0.55. What will be his speed upon emerging
In a certain RLC circuit, the RMS current is 6.42 A, the RMS voltage is 235 V, and the current leads the voltage by 55.6°. Calculate the average power dissipated in the circuit
Following the procedure in the video, create three traces of the pendulum motion of the cup. Compare the three traces for amplitude, wavelength, and frequency.
Rumor has it that a photographic camera on a spy satellite can read the license plate of an automobile on the ground. what must be the diameter of the aperture of the camera
A galaxy has a rotation speed of 200 kilometers per second at a distance from its center of 10 kiloparsecs What is its mass within this distance
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