A 4-kg pendulum bob swings to a maximum height of 0.15 meters above the rest position. What is its maximum kinetic energy? Use 10 m/s/s for gravity.

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.

Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object