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A car of mass 1 ton and a small pick-up of mass 2 ton approaches an intersection at right angles. They collide and the wreckage proceeds stick together with a velocity of magnitude 50 km/h at the angle37 degree with respect to the diction of the car. Find which vehicle was faster than the speed limit (90 km/h)?
An astronomer observes a comet and measures the wavelength of the H? line to be at 486.2 nm. In the lab, the line is found to be at 486.1 nm. What is the Lorentz factor for the comet
A ball of mass 1.5 kg is thrown upward. It leaves the thrower's hand with a velocity of 10 m/s. The following questions refer to the motion after the ball leaves the thrower's hand. Suppose that the upward direction is positive.
a points a and b have electric potentials of 255 v and 129 v respectively. when an electron released from rest at point
A wedding ring (of diameter 1.89 cm) is tossed into the air and given a spin, resulting in an angular velocity of 16.9 rotations per second. find the maximum induced potential difference in the ring
A singly charged ion of 7Li (an isotope of lithium) has a mass of 1.16×10?26kg, What is the radius of the ion's path in the magnetic field
A 990.0 g block of wood rests on a tabletop. A 10.0 g bullet is shot straight up through a hole in the table beneath the block. How fast was the bullet going initially
A ray of light in air is incident on a planar surface of silica. The refracted ray makes an angle of 27.2? with the normal. Refraction index for silica is 1.41. Calculate the angle of incidence. Answer in units of ?.
A beam of light traveling in water strikes a surface of a transparent material at an angle of incidence of 45°. what is the index of refraction of the material
You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball, How tall is the building that the child is standing on
How numerous years would it take a thermally insulated one-million-kilogram chuck of granite to undergo a 1000k boost in temperature?
To maintain constant velocity, the bicyclist is able to return to the lower applied force from Part A but must remain in the larger gear from Part B ( = 4.64 ). What is , the coefficient of rolling resistance on this road surface
water flows through a horizontal pipe of cross-sectional area 10 sq. cm. at one section the cross-sectional area is
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