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A 27 kg block is pulled across a horizontal surface by a rope. The block has an acceleration of 3.5 m/s2 and the coefficient of kinetic friction is 0.2. Determine the tension in the rope.
An ideal monatomic gas expands isothermally from 0.600 m3 to 1.25 m3 at a constant temperature of 600 K. If the initial pressure is 1.10 105 Pa. Find the work done on the gas
A 2.62 kg mass attached to a light string rotates on the horizontal, frictionless table. The radius of the circle is 0.4207 m, and string can support a mass of 14.70 kg before breaking.
what must be done to increase the velocity of a rocket. Calculate the horizontal force that must be applied to produce an acceleration.
A coil of inductance 70 mH and unknown resistance and a 0.85 µF capacitor are connected in series with an alternating emf of frequency 980 Hz. what is the resistance of the coil
An object with moment of inertia I1 is rotating freely (with no torque applied) with angular velocity w. What is the new angular velocity of the combined system
q1. 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
A small box of mass m1 is sitting on a board of mass m2 and length L . The board rests on a frictionless horizontal surface
What is the pressure change in water going from a 3.0- cm-diameter pipe to a 2.1- cm-diameter pipe if the velocity in the smaller pipe is 5.0 m/s
A car of mass M= 900-kg travelling at 45.0 kmh enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between road and car's tires.
A solenoid used to produce magnetic fields for research purposes is 1.9m long, with an inner radius of 27cm and 1100 turns of wire. When running, how large a current does it carry
Two identical, small insulating balls are suspended by separate 0.36-m threads that are attached to a common point on the ceiling. obtain the tension in the threads
When an electron in a hydrogen atom falls from a higher energy state down to the ground state, What is the quantum number of the level from which the electron fell
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