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A convex mirror has a radius of curvature whose magnitude is 47 cm. The mirror is positioned on a horizontal optical bench with its front surface at 0 cm. A 6.0 cm long fluorescent lamp oriented vertically is placed at +103 cm. What is the focal length of the mirror?
At what distance from the mirror can we find a sharp image of the lamp?
How tall is the image of the lamp?
If the convex mirror were replaced by a plane mirror and the lamp moved to 212 cm from the plane mirror, how tall would the image be?
1. a straight wire of length 0.62 m carries a conventional current of 0.8 amperes. what is the magnitude of the
A laser emits a cylindrical beam of light 1.3 mm in diameter. what is the rms valueof the electric field in the laser beam
Unpolarized light in vacuum is incident onto a sheet of glass with index of refraction n. The reflected and refracted rays are perpendicular to each other. Find the angle of incidence. This angle is called Brewster's angle or the polarizing gangly.
A plastic light pipe has an index of refraction of 1.44. For total internal reflection, what is the minimum angle of incidence if the pipe is in the following media
What force must be applied to push a carton weighing287 newtons up a 19° incline, if the coefficient of kineticfriction is 0.3. Assume the force is applied parallel to the incline and the velocity is constant.
A hawk flies in a horizontal arc of radius 14.4 m at a constant speed 3.55 m/s. (a) Find its centripetal acceleration. (b) It continues to fly along the same horizontal arc, but increases its speed at the rate of 1.35 m/s2. Find the acceleration in t..
An electron is sent at high speed toward a gold nucleus (charge +79e). What is the elctrical force acting on the elctron when it is 3.0e-14m away from the gold nucleus?
You buy a plastic dart gun, and being a clever physics student you decide to do a quick calculation to find its maximum horizontal range. What is the maximum horizontal range of your gun
A student sitting on a frictionless rotating stool has rotational inertia 0.92kg?m2 about a vertical axis through her center of mass, Ignoring her arm mass, what's her new rotational velocity
A physics book slides of a horizontal tabletop wit a speed of1.10m/s. it strikes the floor in 3.50s ignore air resistance. calculate the heigth of the table top above the floor
Two pendulum bobs have masses MA = 3 kg and MB = 2 kg and equal lengths L, What is the maximum swing angle
A spring is hung from the ceiling. A 0.600-kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
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