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If you fire a bullet through a board, it will slow down inside and emerge at a speed that is less than the speed with which it entered the board. Does light, then, similarly slow down when it passes through glass and also emerge at a lower speed? Explain your answer.
A battery having an emf of 9.00 V delivers 105 mA when connected to a 64.0 omegacap.gif load. Decide the internal resistance of the battery.
A prescription for a corrective lens calls for +1.50D. The lensmaker grinds the lens from a "blank" with n = 1.56, What should be the radius of curvature of the other surface
A sound wave with a frequenc of 512 Hz and a wavelenth of 2.99 m is directed toward the bottom of a lake to measure its depth. If the echo of the sound from the bottom is heard 0.25 seconds later, how deep is the lake?
a helicopter lifts a 70 kg astronaut 16 m vertically from the ocean by means of a cable. the acceleration of the
A grating has 600 rulings/mm and is 5.0mm wide, How many higher orders of maxima can be seen
A 1.23 x 103-kg car travels on a bumpy road at a constant speed of 25.0 m/s. What is the normal force on the car
Determine the maximum efficiency and open circuit voltage for the methane?oxygen fuel cell,- when each component in the reaction is at 25.0°C and 0.100 MPa.
A doubly charged ion (charge 2e) with velocity 6.9 × 106 m/s moves in a circular path of diameter 60.0 cm in a magnetic field of 0.80 T in a mass spectrometer
A lens is used as a magnifier to view an ant placed on a piece of paper. The image of the ant is 15cm from the lens and the magnification factor is 3. How far from the paper (the ant) is the lens
Two narrow slits are illuminated by a laser with a wavelength of 552 nm. Calculate the distance between the two slits
a parallel plate capacitor has a voltage of 391 v applied across its plates then the voltage source is removed. what is
A person swimming underwater sees a lifeguard who is standing in the shallow part of the pool; the water comes up to the lifeguard's waist. In what way does the swimmer see lifeguard's upper body distorted.
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