Me with this problem ? c:

which appliance uses more energy?

a.) a 30-watt cd player used for 3 hours (10,800 seconds)
b.) a 300-watt blender used for 2 minutes (120 seconds)
c.) a 1,500-watt hair dryer used for 3 minutes (180 seconds)
d.) a 200-watt computer used for 10 hours ( 36,000 seconds)

Answer quickly (15 points) a comet is approaching earth. describe earth’s gravitational pull as the comet gets closer to it. a. remain constant b. increase c. decrease d. reversed

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid