If the period of a pendulum is 2.0 seconds and the acceleration due to gravity is
9.8 meters/second2, what is the length of the cord on the pendulum?
1.0 meters
0.67 meters
1.3 meters
3.5 meters

An uncharged nonconductive hollow sphere of radius 18.0 cm surrounds a 12.0 µc charge located at the origin of a cartesian coordinate system. a drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. calculate the electric flux through the hole.

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

The pressure proportional to the area a- inversely b- directly c- increase d-decrease