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You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. The ray reflects from the mirror and strikes the wall. The plane of the incident and reflected rays is perpendicular to the wall. The ray from the laser strikes the mirror 35.5 cm from the wall, and the reflected ray strikes the wall 37.5 cm above the mirror. Find the angle of incidence of the laser ray on the mirror.
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 large truck collides head-on with a small car. The car is severely damaged as a result of the collision. According to Newton's third law, how do the forces acting between the truck and car compare during the collision?
The fastest possible rate of rotation of a planet is that for which the gravitational force on material at the equator barely provides the centripetal force needed for the rotation. evaluate the shortest period of rotation
A train is traveling at 30m/s relative to the ground in still air. What frequency, (f.approach), is heard by a passenger on a train moving at a speed of 18m/s relative to the ground
A dentist's mirror is placed 3.1 cm from a tooth. The enlarged image is located 6.3 cm behind the mirror. How is the image oriented relative to the object
Electric charge Q has been spread uniformly over a circular arc of radius R and central angle 40 degrees. What is the potential at point P, center of curvature of the arc.
Three identical point charges each of charge q are located at the vertices of an equilateral triangle, Find a symbolic expression for the electric potential at the center of the triangle
after walking across a dry carpet theres a potential difference of 5500 v between your hand and the doorknob. as you
question an electron accelerated from rest through a voltage of 420 v enters a region of constant magnetic field. if
A cook puts 8.20 g of water in a 2.00-L pressure cooker that is then warmed to 470°C. What is the pressure inside the container
A 45.0-kg girl is standing on a 133-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is her velocity relative to the surface of ice
If in general R were calculated as R=V/I, which curcuit arrangement in part A of experiment would have the smalles ERROR? define.
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