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The average intensity of light emerging from a polarizing sheet is 0.707 W/m2, and the average intensity of the horizontally polarized light incident on the sheet is 0.922 W/m2. Find the angle that transmission axis of polarizing sheet makes with the horizontal.
°
A small earthquake starts a lamppost vibrating back and forth. find the time constant for the damping of the oscillation
electric train consider the possibility of a new design for an electric train. the engine is driven by the force on a
How many 40W, 60lm/W fluorescent lamps would be needed to provide an illuminance of 250lm/m^2 on a factory floor of an area 25m x 30m? Suppose the lights are 10m above the floor and that half their flux reaches the floor
The syringe must be heated to high temperatures to sterilize it. When the syringe is at its maximum temperature, the number of oxygen molecules is 6.5 x 1019, what is the rms speed of the oxygen molecules
at some point in space,the x and y components of the electric field are Ex= 1.73 N/C, respectively and Ey= 3.75 N/, respectively. What is the net charge of the particle
A fire engine moving to the right at 40 m/s sound its horn (frequency = 500 Hz) at the two vehicles shown in the figure. The car is moving to the right at 30 m/s, while the van is at rest. (a) What frequency is heard by the passenger in the car?
two speakers are placed side-by-side and are driven by the same frequency of 420. hz. if the distance from a man to one
Compute the camels eastward displacement
Neptune is an average distance of 4.50 x 109 kilometer from the Sun. Find the length of the Neptunian year given that the Earth is 1.50 x 108 kilometer from the Sun on the average
A small 13.0-g bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. What is the angular speed of the bar when the insect leaps off
73 magnetic target is suspended on a string. A .025magnetic dart, shot horizontally, stickes the target head-on. the dart and the target together, acting like apendulum, swing 12 cm above the initial level before instantaneously coming to a rest...
a super-particle travels forward along a straight cylindrical tube at 1000 m/s for 10 m, What is the average velocity
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