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Four identical charges (+2.17mC (micro C) each) are brought from infinity and fixed to a straight line. The charges are located 0.373m apart. Decide the electric potential energy of this group.
Consider a universe in which Einstein's postulates and special relativity are valid but the speed of light c = 200 miles/hour. A Toyota with proper length L and a Bentley with proper length 3L are racing.
A stone dropped into a pond generates a travelling wave group approximately 1 m long; the waves within the group have a wavelength of about .1 m Estimate the range of the wavevector spectrum representing the group.
A jet lands at 54.4 m/s, the pilot applying the brakes 2.45 s after landing. Find the acceleration needed to stop the jet within 5.17 x 10^2 m after touchdown.
Two blocks are in contact on a frictionless table. A horizontal force F is applied to m1. If m1 = 1.66 kg, m2 = 3.72 kg, and F = 6.25 N, find the magnitude of the force between the two blocks
Toni has a mass of 43 kg and is moving with a speed of 11.6 m/s. Assume that air resistance is negligible. Find Toni's kinetic energy. Toni's speed changes to 5.8 m/s. Now what is her kinetic energy? What is the ratio of the kinetic energies in parts..
In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar to that , What is the new range
One rod is made from lead and another from quartz. The rods are heated and experience the same change in temperature. calculate the initial length of the quartz rod
Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health, determine the maximum emf that can be generated around the perimeter of a cell in this field
A half-infinite well has an infinitely high wall at the origin and one of finite height U0 at x = L. Like the finite well, the number of allowed bound states is limited. Assume t it has two states, of energy E1 and E2, where E2 is not much below U..
The motion of the pistion o fan automobile engine is SHM. if the stroke of an engine (twice theamplitude) is 4 in. and the angular velocity is 3600 rev/mincompute the acceleration of hte pistion at the end of itsstroke
Spark plugs should be tightened to a specified torque of 13.8Nm. You have a wrench that is 0.25 m long, What force must you exert on the wrench
A 257 kilogram log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. Obtain what is the tension in rope
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