Saturday
December 7, 2013

# Posts by Charlie

Total # Posts: 355

Physics
An aquarium filled with water has flat glass sides whose index of refraction is 1.48. A beam of light from outside the aquarium strikes the glass at a 43.5º angle to the perpendicular . The angle this light ray enters the glass is 27.7º, what is the angle of this lig...

Pysics
An aquarium filled with water has flat glass sides whose index of refraction is 1.48. A beam of light from outside the aquarium strikes the glass at a 43.5º angle to the perpendicular . The angle this light ray enters the glass is 27.7º, what is the angle of this lig...

Physics
An EM wave has a wavelength of 620 nm. What is its frequency? How would we classify it?

Chemistry
Why B(CH3)3 cannot be Lewis Base??

science
Rank the species from strongest to weakest base: Cl-, OH-,NH2

College Physics
That idea of "omni directional" kind of confused me also... I would guess that it can be assumed as just a regular wave?

College Physics
A radio station with a power of 20 kW sends out an omnidirectional wave at 1.25 MHz. a. If the electromagnetic wave has an electric field of 0.22 V/m, what is the magnetic field amplitude? b. What is the intensity of the wave at 5 km? c. What is the wavelength of the electroma...

math
The larger x values are to the right

algebra 1
Re type your question, I don't understand what you are trying to find.

algebra
Mult 1st eq by 3; x-2y+3z = 0 Mult 2nd eq by 4: 2x - 3y + 4z = 1 Add 2nd and 3rd: -4y+5z = 2 Mut 1st by 2: 2x-4y + 6z = 0 Add that answer and 3rd eq: -5y + 7z = 1 5(-4y + 5z = 2) + -4(-5y + 7z = 1) -20y + 25z = 10 + 20y - 28z = -4 -3z =6 z = -2 Sub into the 1st eq: x - 2y -6 =...

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