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A block attached to a spring of unknown spring constant oscillates with a period of 2.0 seconds. What is the period when the mass is doubled?
A second converging lens of focal lenght 12 cm is placed to the right of the first lens. If the final image of the combined lens system is virtual and 15 cm from the second lens, then compute the distance between the two lenses
The maximum current in a superconducting solenoid can be as large as 3.61 kA. what is the magnitude of the magnetic field it produces
the nucleus of 8be which consists of 4 protons and 4 neutrons is very unstable and spontaneously breaks into two alpha
A 5kg mass slides along a frictionless surface and strikes another block of mass 3kg which is at rest. Assume the collision iselastic and determine the final velocities of each of the blocks.
A car battery with 12 V and negligible internal resistance (r=0) is connected three identicle resistors with R=20. find the current and power of each resistor consumes when the switch is open
Electromagnetic waves areonly produced by accelerating charges, not by charges moving at aconstant speed without acceleration. What logical inconsistencywould be created if electromagnetic waves were produced by charges that move with zero accelerati..
To stretch a certain spring by 2.70cm from its equilibrium position requires 8.00J of work. What is the force constant of this spring
A stream turbine at an electric power plant delivers 4 500 kW of power to an electrical generator which converts 95% of this mechanical energy into electrical energy
An 800-N man stands halfway up a 5 m long ladder of negligible weight. The base of the ladder is 3 m from the wall as shown. suppose that the wall-ladder contact is frictionless, wall pushes against the ladder with a force of what magnitude.
The puck has a mass of 0.140kg. Its original distance from the center of rotation is 40.0 cm, and it moves with a speed of 70cm/s. The string is pulled downward 15cm by the hole in the frictionless table. Determine the work completed on the puck.
a 26-cm-long wire with a linear density of 15 gm passes across the open end of an 87-cm-long open-closed tube of air.
Two crickets, Chirpy and Milada, jump from the top of a vertical cliff. Chirpy just drops and reaches the ground in 4.00s, How far from the base of the cliff will Milada hit the ground
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