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A spotlight on a boat is 2.5 m above the water, and the light strikes the water at a point that is 8.0 m horizontally displaced from the spotlight (see the drawing). The depth of the water is 4.0m. Decide the distance d, which locates the point where the light strikes the bottom. Suppose water has a refraction index of 1.333.
A1.20-m-long wire has a resistance equal to0.320?. A second wire made of identical material has a length of1.90m and a mass equal to the mass of the first wire. What is the resistance of the second wire?
Ligh of wavelength 248nm is directed onto the surface of a metal, what is the longest wavelength of light which will eject electrons from this metal
suppose you wish to make a solenoid whose self-inductance is 1.4 mh. the inductor is to have a cross-sectional area of
Two resistors, of R1 = 2.07 ? and R2 = 6.97 ?, are connected in series to a battery with an EMF of 24.0 V, Find the current I1 through the first resistor
A 0.362 kg bead slides on a curved wire, starting from rest at point A, find the speed of the bead at C
A skier is gliding along at 5.0 on horizontal, frictionless snow. He suddenly starts down a 10incline. His speed at the bottom is 15. how long does it take him to reach the bottom
Electrons from a heated filament pass through a hole in the cathode. They are then accelerated between the cathode and anode. what direction are the electrons deflected
an astronaut lands on a distant planet and performs an experiment to determine the local value of g the acceleration
Tube A, in a 20°C room, is observed to support standingwaves at frequencies of 48 Hz, 60 Hz and 72 Hz, but not at anyfrequencies in between (but possibly at higher and lower frequencies). Meanwhile tube B, which is the same length, supports standi..
A telescope is designed using an objective lens f focal length f(obj)=2m and an eyepiece of focal length f(eye)=8cm. Find the location and size of the image of Jupiter formed by the objective lens
a helicopter flies over the arctic ice pack at a constant altitude towing an airborne 140-kg laser sensor that measures
500 cm3 of ideal gas at 40 oc and 200 kpa absolute pressure is compressed to 250 cm3 and cooled to 20 oc. what is the
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