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Two trains, each having a speed of s, are headed at each other on the same straight track. A bird that can fly at speed 2sflies off the front of one train when they are d apart and heads directly for the other train. On reaching the other train it flies directly back to the first train, and so forth. (We have no idea why a bird would behave in this way.) In terms of variables given in the problem, what is the total distance the bird travels?
How much work done against force of gravity
A charge of -4.00 nC and a charge of -6.10 nC are separated by the distance of 60 cm. Find out the position at which a third charge of +7.90 nC can be placed so that net electrostatic force on it is zero.
Coherent light with wavelength 610 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright..
Find the speed an alpha particle requires to come within 2.6 ? 10-14 m of a uranium nucleus
Assuming that the disks form a circular parallel plate capacitor and the electron are initially at rest when they pass through the first disk. A) determine the acceleration that the electrons undergo and B) the speed of the electrons as they pass ..
An isotope of phosphorus called P-32 is radioactive. It decays with half life of 14.3 days with the emission of beta particle. A 1.0 m?Ci source of P-32 is implanted in a tumor where it would deliver radiation dose of 28.6 Gy.
Coherent light with wavelength 601 passes through two very narrow slits, and interference pattern is observed on a screen a distance of 3.00 from the slits.
Find out the position at which a third charge can be placed.
A loudspeaker at the origin emits a 140Hz tone on a day when the speed of sound is 340 m/s. What is the distance between these two points
A popular pastime is to see who can push an object closest to the edge of a table without its going off. You push the 100 g object and release it 1.00mm from the table edge. If the coefficient of kinetic friction is 0.500, what was the object's sp..
Assume the mass density of Earth from the center to r= R_cm (radius of the core mantle boundary) is d_cm and from R_cm until the surface r=R_e the density is d_e. Using these densities, determine the gravitational potential energy of the Earth
A rescue helicopter lifts a 90-kg person straight up by means of a cable, What is the tension in the cable and How much work is done by the tension in the cable
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