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When you blink your eye, the upper lid goes from rest with your eye open to totally covering your eye in a time of 0.024s.
a. Estimate the distance that the top lid of your eye moves through a blink.
b. What is the acceleration of your eyelid? Assume it to be constant.
c. What is your upper eyelid's final speed as it hits the bottom eyelid?
A certain camera lens has a focal length of 149 mm. Its position can be adjusted to produce images when the lens is between 152 mm, Over what range of object distances is the lens useful
A star with a surface temperature of 19,000 K and a radius of 3.7 X 106 km is located at a distance of 520 pc from the Earth. What is the luminosity of this star
A person is riding a bicycle, the wheels of a bicycle have anangular velocity of + 22.0 rad/s. What is the angular acceleration of each wheel
One particle has a mass of 4.59 x 10-3 kg and a charge of +7.03 ?C. A second particle has a mass of 8.88 x 10-3 kg and the same charge. Find the initial separation between the particles
A shuffleboard disk is accelerated at a constant rate from rest to a speed of 7.3 m/s over a 2.4 m distance by a player using a cue. What total distance does the disk travel
A thin rod consists of two parts joined together. One-third of it is silver and two-thirds is gold. The temperature decreases by 31.3 C°. Determine the fractional decrease ?L/(LSilver + LGold) in the rod's length, where LSilver and LGold are the init..
A proposed space station includes living quarters in a circular ring 60.5 m in diameter. At what angular speed should the ring rotate
A beam of polarized light with an average intensity of 18.9 W/m2 is sent through a polarizer. find the rms value of the electric field of the transmitted beam
A metallic sphere 1 of radius 1.00 cm is far away from a metallic spherical shell 2 of radius 2.00 cm. What is the initial voltage on 1
Two particles with masses m1 = 1 kg and m2 = 3 kg are moving toward each other along the x axis with the same initial speeds vi = 1 m/s. Find the final speeds of the two particles
two displacement vectors of magnitudes 21 cm and 79 cm are added. which one of the following is the only possible
the temperature of the air in a resonator is 15degc when a tuning fork vibrates at one end the spacing between tow
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