What is the usefulness of the representation for drawing a strait line for a light ray without the arrow?

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

Argon is adiabatically compressed from an initial volume of 16 liters to a final volume of 2 liters. by what factor do the following quantities change? do they increase or decrease? (a) the rms speed (b) the thermal energy of the gas (c) the molar specific heat cv (d) the pressure

What is a possible result of higher air temperature caused by global warming