Why do most surfaces reflect light diffusely?

1. Most surfaces are clear.

2. Most surfaces are 100% smooth.

3. Most surfaces are not totally smooth.

4. All surfaces are smooth.

A 13.2 resistor has 0.049 A of current in it. What is the potential difference across the resistor?

A car accelerate from 25m/s to 50m/s over a time of 10 second. what is acceleration of the car

What is the speed. ofma runner who runs for 6 min. and covers a distance of 1 mile?

Two blocks, stacked one on top of the other, slide on a frictionless horizontal surface. The surface between the two blocks is rough, however, with a coefficient of static friction equal to 0.50. The top block has a mass of 2.

is the process in planetary formation when heavy materials sink toward the planet's center lighter materials accumulate near its surface. A. Superposition B. Orogeny C. Differentiation D. Ratification

The kinetic energy of a moving object is equal to the work required to bring it to its speed from rest, or the work the object can do while being brought to rest.

Imagine standing on a bathroom scale and reading your weight. now lift one foot and read your weight again. does the scale read more, less or the same weight when you are standing on one foot?

The period T of a simple pendulum depends on the length L of the pendulum and the acceleration of gravity g (dimensions L/T^2). (a) Find a simple combination of L and g that has the dimensions of time.

What is an example of the theory that the best adapted organisms for an environment are the ones most likely to survive

What does not affect the apparent brightness of a star?