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1. An object is placed 30 cm to the left of a converging lens of focal length 15 cm, and a diverging lens of focal length 20 cm is placed 45 cm to the right of the first lens. How far from the original object is the final image? What is the magnification of the lens combination?
2. While talking to someone who is wearing sunglasses you see yourself reflected in their lenses. Your face is 10.0 cm away from the glasses, which are diverging and have a radius of curvature of 1.00 m. Locate and describe the image.
Both drawings show the same square, each of which has a side oflength L = 0.88 m. An observer O is stationed at onecorner of each square. Two loudspeakers are located at corners ofthe square, as in either drawing 1 or drawing 2.
A cube of ice, 11 centimeter on each side, is melted into a measuring cup. Calculate the volume of the liquid water
An object is accelerated by a force. If the force is increased by a factor of 3 and the mass is increased by a factor of 4, by what factor will the acceleration change
A cosmic ray plows into Earth's upper atmosphere, liberating a shower of subatomic particles. One of these particles moves downward 3.2 km, then undergoes a collision after which it moves 1.6 km at 27 deg. northward of the vertical. It then underg..
A moon orbits a planet of unknown mass with a period of 1.8 days. If the radius of the moon's orbit is 420,000,000 m, Compute the mass of the planet
An astronomer observes electromagnetic waves emitted by oxygenatoms in a distant galaxy that have a frequency of 5.710x10^14 Hz. Determine the relative velocity of thegalaxy
A merry-go-round starts from rest and accelerates uniformly over 10.5 s to a final angular velocity of 6.90 rev/min. Find the person's maximum radial acceleration
In compressing the spring in a toy dart gun, 0.6 J of work is done. When the gun is fired, the spring gives its potential energy to a dart with a mass of 0.08 kg. What is the dart's speed
A 40 g bullet traveling 500 m/s penetrated 5 cm into a tree trunk. what was the retarding force on the bullet
A long, straight wire carries a current I1 = 3.5 A and is a distance h =15 cm from a rectangular current loop that carries a current I2 = 1.5 A. What is the force exerted by the current loop on the wire
A 7.80-g bullet moving at 500 m/s penetrates a tree trunk to a depth of 6.00 cm. find the average frictional force that stops the bullet
A hollow, conducting sphere with an outer radius of 0.250m and an inner radius of 0.190m has a uniform surface charge density of +6.97 × 106 C/m2. What is the new charge density on the outside of the sphere
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