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A ray of light is incident on the outer glass wall of an aquarium which have a refractive index of 1.51. If the reflected portion of the light is completely polarized at what angle to the normal does the ray enter the water?
[n(air)=1.0, n(water)=1.33]
A coil with a radius of 2cm is wrapped with 400 turns of wire uniformly along its 20cm length. what EMF will be produced in the coil
What is coefficient of friction between chair and floor
You need to produce a solenoid that has an inductance of 2.55 ?H . You construct the solenoid by uniformly winding 1.07 m of thin wire around a tube. How long, in centimeters, should the tube be
An ideal gas initially at 20°C and 199 kPa has a volume of 3.40 L. It undergoes a quasi-static, isothermal expansion until its pressure is reduced to 94 kPa. (a) Find the work done by the gas. J (b) Find the heat added to the gas during the expans..
On an essentially frictionless horizontal ice-skating rink, a skater moving at 3.1m/s encounters a rough patch that reduces her speed by 42% to a friction force that is 24% of her weight
A 1.8 cm --tall object is 15 cm in front of a diverging lens that has a -18 cm focal length. compute Is the image erect or inverted
The brick wall of a building has dimensions of by and is thick. How much heat ?ows through the wall a period when the average inside and outside temperatures are, in that order.
The dial on an FM radio contains numbers ranging from about 88 to about 108. What is the corresponding range of wavelengths
A woman holds a tube of lipstick 2.3 cm from a spherical mirror and notices that the image of the tube is upright and one fifth its normal size, Determine the position of the image. Is it in front of or behind the mirror
The water in a tank is at a gauge pressure of 283,685 Pa. what is the force on the bottom of the tank
In building a particle accelerator, you manage to produce a uniform electric field of magnitude 4.03 × 105 N/C in one 40.5 cm section. How much work is required to move a proton through the section
Suppose that a structure of arbitrary complexity has a number of forces applied to it (at various points) and yet is in static equilibrium. The principle of virtual work allows one to write an equation that relates the applied forces.
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