In the above diagram, the block is at static equilibrium on the ground. What is the value of the force exerted by the ground on the block if the force due to gravity is 12 newtons? A.
20 newtons
B.
12 newtons
C.
-12 newtons
D.
-20 newtons
E.
0 newtons

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

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?

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.