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Q1. Two trains, each having a speed of 38 km/h, are headed at each other on the identical straight track. A bird that can fly 70 km/h flies off the front of one train while they are 68 km apart and heads directly for the other train. On reaching 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.) What is the total distance the bird travels before the trains collide?
Q2. A 0.185 kg hockey puck moving at 26 m/s is caught and held by a 78 kg goalie at rest. With what speed does the goalie slide on the ice?
Deflection of the electron beam in a tube TV set is accomplished by magnetic forces. how far from the center of the screen does the beam strike
A perfectly insulated system has work done by it at a rate of 13 W. At what rate is the internal energy of the system changing?
A small metallic bob is suspended from the ceiling by a thread of negligible mass. The ball is after that set in motion in a horizontal circle so that thread describes a cone. Compute the magnitude of the angular momentum of the bob about a vertic..
question1adjust the solution process discussed in class for uniform slow viscous flow past a sphere to the case of flow
You stand in the earth's magnetic field, directly facing its horizontal component (in other words, facing magnetic south). Compute the outward flux through your body's back surface
What is the net force exerted by these two charges on the third charge = 46.5 placed between and at = -1.235 ? Your answer may be positive or negative, depending on direction of the force.
Light from the sun is incident on the surface of a pond with a smooth surface. The light strikes the surface at the angle of 30 to the surface and is partially reflected. What is the angle of reflection for the reflected portion? What is an angle of ..
A transverse traveling wave on a cord is represented by D = 0.25 sin (6.8x + 28t) where D and x are in meters and t is in seconds. Determine maximum and minimum speeds of particles of the cord
A college campus features a large fountain surrounded by the circular pool. Two students start at the northernmost point of pool and walk slowly around it in opposite directions.
What is coefficient of friction between chair and floor
A horizontal beam of vertically polarized light of intensity 43 W/m2 is sent through two polarizing sheets. What is the intensity of the light transmitted by the pair of sheets
In a dentist's office, an X-ray of a tooth is taken using X-rays that have a frequency of 8.07 multiply.gif 1018 Hz
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