PHYSICS QUESTION! NEED HELP ASAP! Part 1:

The index of refraction for silicate flint glass

is 1.66 for light with a wavelength of 400 nm.

Find the angle of refraction for light with

wavelength 400 nm that is incident on this

glass at an angle of 51◦.

Answer in units of ◦.

Part 2:

The index of refraction for silicate flint glass

is 1.61 for light with a wavelength of 700 nm.

Find the angle of refraction for light with

wavelength 700 nm that is incident on this

glass at an angle of 51◦.

Answer in units of ◦.

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

Both speed and velocity measure how fast something is moving. however, since speed is not a it does not require a(n question 6 options: a) quantity , unit b) magnitude, unit c) scalar, direction d) vector, direction