When you see the color black... a. All colors are reflecting
Selected: b. The color black is reflectingThis answer is incorrect.
c. All colors are absorbed
d. the color black is absorbed

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.