Which is a gas at room temperature?
a) aluminum
b) nitrogen
c) potassium
d) sodium

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.