In a nuclear reactor, each atom of uranium releases about 200 MeV when it fissions. What is the change in mass when 1.00 kg of 235U is fissioned? Express your answer in units of kg. Hint: The atomic mass of uranium is 235 u.

A 20 story building casts a 350 m shadow over level ground. Each story of the building is 3.7 m in height. At what angle is the sun elevated above the ground?

You sight along the rim of a glass with vertical sides so that the top rim is lined up with the opposite edge of the bottom (see the figure (Figure 1)(a)). The glass is a thin-walled hollow cylinder 16.0 cm high with a top and bottom of the glass diameter of 8.0 cm. While you keep your eye in the same position, a friend fills the glass with a transparent liquid, and you then see a dime that is lying at the center of the bottom of the glass (see the figure(b)).

For a spherical mirror situation, you have determined that s = 33 cm and s' = 79 cm. What is the focal length of the mirror, in cm?

You have a concave spherical mirror (the same holds if you had a convex mirror) If the value of q(the distance from the image to the mirror along the principal axis of the mirror) is 1.45m and the distance of p (the distance from the object to the mirror along the principal axis of the mirror) is 4.11m, what is the focal length of the mirror? The magnification equation and the sign convention for q imply that real images of real objects are always inverted (if both p and q are positive, m is negative); virtual images of real objects are always upright (if p is positive and q is negative, m is positive).  Keeping the signs of p and q straight in your mind is the most challenging aspect of mirrors (and lenses).  Fortunately, table 23.2 summarizes when p and q are positive and when they are negative.

2. 11.3 cm,-0.4 cm 2. A concave mirror has f = 10.5 cm. An object that is 5.2 cm tall is placed 1.5 m away from the mirror. Sketch the ray diagram. Find image height and distance. Describe image.

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A plano-convex lens is one with a convex surface on one side and a flat surface on the other.  Suppose a thin lens is made of glass with index of refraction 1.5.  If the radius of curvature of the curved surface is 1.1 meters, what is the focal length of the lens? Give your answer in meters.

cem 1 1 of 1 Use this information for parts G, H and I. The sideview mirror on your car is convex. When looking in this mirror, you see a car that has an actual distance of 100 m behind you (the distance from the car to the mirror) and the image appears to be only -1.961 m from the mirror. Part G What is the focal length of this mirror? Answer in units of m to four significant figures. Do not Include the units symbol. Submit Request Answer Part H If the image of the car appears to be 2.941×10¬2 m tall, what is the height of the actual car? Answer in units of m to four significant figures. Do not include the units symbol. ? Submit Request Answer Part I

A light beam is shone into a mystery material. The light beam has an incident angle of 38 degrees and a refracted angle of 24 degrees. If n1 = 1.00, what is n2?