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the near point of a person's eye is 52.8 cm. To see objects clearly at a distance of 24.0 cm, what should be the focal length and power of the appropriate corrective lens? (Neglect the distance from the lens to the eye.)
(a) focal length of the appropriate corrective lens
cm
(b) power of the appropriate corrective lens
diopters
An angler hangs a 4.52-kg fish from a vertical steel wire 1.65m long and 5.47×10?3cm2 in cross-sectional area. Calculate the amount the wire is stretched by the hanging fish
A small statue is recovered in an archaeological dig. Its weight is measured to be 2.1 lb and its volume 0.06 ft3, What is the statue's weight density
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the distance from the limb to the level of the saddle is 3.00 m.
Draw vectors indicating the normal force. suppose that the weight of the femur is negligible compared to the applied downward force.
A horizontal light ray is incident on a crown glass prism as shown in the figure below where ? = 42.5°. Find the angle of deviation ? of the ray-the angle
Once free of this area, it speeds up to 13 m/s in 8 {rm s}. At the edge of town, driver again accelerates, with the same acceleration, for another 16 {rm s} to reach a higher cruising speed.
A 220 g air-track glider is attached to a spring. The glider is pushed in 12cm against the spring, and then released. A student with a stopwatch finds that 16 oscillations take 11.5.
assume a planet had a density that varied with radius according to the equation, ρ =A/r, where A is some constant. Determine a formula that gives the central pressure for this kind of planet.
You place an ice cube in a microwave oven. If it requires 32,220 J to melt the ice cube and the oven delivers 97 W of power to the ice cube
A planet of mass m = 7.05 × 1024 kg is orbiting in a circular path a star of mass M = 4.95 × 1029 kg. The radius of the orbit is R = 8.35 × 107 km
A tank 2.30 meters in height is filled with water to a level of 2.10 meters. At the bottom of the tank a hose is attached. Find the velocity of the water coming out of the hose
A copper telephone wire has essentially no sag between poles 34.00 m apart on a winter day when the temperature is -20°C. How much longer is the wire on a summer day.
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