energy quantization

Derive the infinite square well energy quantization law, directly from the DeBroglie relation p=h/l, by fitting an integral number of half DeBroglie wavelengths l/2 into the width a of the well

Polarization of Light Waves

Unpolarized light passes through two polaroid sheets. The axis of the first is vertical, and that of the second is at 26.0° to the vertical. What fraction of the initial light is transmitted?

Interference in thin films

A transparent oil of index of refraction 1.29 spills on the surface of water (index of refraction 1.33), producing a maximum of reflection with normally incident violet light (wavelength 400 nm in air). Assuming the maximum occurs in the first order, determine the thickness of the oil slick.

Young's Double-Slit Interference

A riverside warehouse has two open doors, as in Figure P24.11. A boat on the river sounds its horn. To person A the sound is loud and clear. To person B the sound is barely audible. The principal wavelength of the sound waves is 2.80 m. Assuming person B is at the position of the first minimum, determine the distance between the ...continues

what causes a spark from flint

Is it heat that causes flint (or the colliding element) to spark, or does a piece of that mineral burn up?

Fluid statics

If you tried to nonchalantly smuggle gold bricks by filling your backpack, whose dimensions are 60cm x 25cm x 15cm, what would its mass be?

Fluid Statics

The specific gravity of ice is .917, whereas that for seawater is 1.025. What fraction of an iceberg is above the surface of the water? *note- if possible, please explain this in the simplest way you can- i'm not naturally a science kinda gal! Thanks :)

Fluid Statics

A 3.15kg piece of wood (SG= .50) floats on water. What minimum mass of lead, hung from it by a string, will cause it to sink? *note- please explain this in the simplest way possible if you can! thank you :)

Fluid Dynamics

A 5/8 inch (inside) diameter garden hose is used to fill a round swimming pool 6.1m in diameter. How long will it take to fill the pool to a depth of 1.2m if water issues from the hose at a speed of 0.33m/s? *note- please explain this in the simplest way possible if you can! thank you :)

Fluid Dynamics

What gauge pressure in the water mains is necessary if a firehose is to spray water to a height of 15m?