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An object is placed 12 cm in front of a concave mirror whose focallength is 23 cm. The object is 3.6 cm tall. Determine (a) the location of the image,taking a real image as a positive value and a virtual image as anegative value. (b) Determine the height of the image, where an upright image will have a positive heightand an inverted image will have a negative height.
A wheel is disconnected from a motor and come to rest from 14,000 rpm because of a 0.90 m·N frictional torque. How many revolutions has the wheel turned before coming to rest
A beam of light in air is incident on the surface of a slab of fused quartz. What is the angle between the reflected ray and refracted ray
A person walks into a room that has, on opposite walls, two plane mirrors producing multiple images. Find the distances from theperson to the first three images seen in the left-hand mirror, whenthe person is 5.00 ft from the mirror on the left wall ..
A swimmer heads directly across a river, swimming at 1.60 m/s relative to the water. She arrives at a point 58.0 m downstream from the point directly across river, 63 m wide. What is the speed of the river current.
A boy exploring a cave drops a rock into a dark crevasse. He hears the rock strike the bottom 10.1 s after dropping it. Find the depth of the crevasse
When a second pipe is played at the same time, a 1.40 Hz beat note is heard. By how much is the second pipe too long.
1 a small mailbag is released from a helicopter that is descending steadily at 1.50ms. after 2.00s awhat is the speed
marsha hits a tennis ball upward from the top of a 90-foot-high cliff with an initial velocity of 16 fts. marsha hit
A 0.69 cm high object generates an image that is 0.8 cm high. The lens has a focal length of 7 cm, Find the image and object distances
A research submarine has a 10-cm-diameter window that is 8.9cm thick, What is the submarine's maximum safe depth in salt water
A copper wire of length 0.5 cm is in a magnetic field of 2.0 T. If it has a mass of 1.0 g, what is the minimum current through the wire that would cause a magnetic force equal to its weight?
A bullet mass 7.1 grams is fired from a gun with a muzzle velocity of 1,078 mph. It embeds itself 77.3 cm in a wood post. What was the average force on the bullet in slowing it to a stop?
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