A 1500-w heater is connected to a 120-v line. How much heat energy does it produce in 2. 0 hours?.

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving