When a yellow light is shined on a white surface, why does the surface look yellow instead of white? A. Only yellow light is available to be absorbed from the white surface. B. White only reflects yellow. C. White reflects all colors. D. Only yellow light is available to be reflected from the white surface. Reset Submit

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.

Why does karst topography exist in some geographic location? a. few climates have enough oxygen b. most regions have rock layers other than limestone c. in most regions, the soil is too thin d. the water is too acidic enough in most places