Which of the following are electromagnetic waves? sound waves water waves ground waves light waves`

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

The power exerted by a muscle is the product of the force exerted and the velocity of contraction. the area of which of these shaded regions represents the power exerted while a weight is lifted at maximum speed?