A pendulum makes 40 vibrations in 20 seconds. Calculate its period?

Find the work done by a force of 8 pounds acting in the direction of 44° to the horizontal in moving an object 7 feet from (0, 0) to (7, 0). Round answer to the nearest tenth of a foot-pound.

What type of themometer would you use to take your temperature

Select a building material for the walls and floor wood piece, clay block, iron block, Aluminium, copper, nickel

Which planets have the largest accelerations of gravity? a. Mercury, Venus, Earth c. Pluto, Venus, Jupiter b. Jupiter, Neptune, Saturn d. All planets have the same acceleration of gravity.

A 0.50-kilogram puck sliding on a horizontal shuffleboard court is slowed to rest by a frictional force of 1.2 newtons. What is the coefficient of kinetic friction between the puck and the surface of the shuffleboard court? (1) 0.24 (3) 0.60 (2) 0.

A 20kg box is dropped 13m. how much work is done

Suppose a person whose mass is m is being held up against the wall with a constant tangential velocity v greater than the minimum necessary. Find the magnitude of the frictional force between the person and the wall

A ball is being rolled by a normal push of 1000N. it is opposed by friction which has a force of 0.3kN and air resistance which has a force of 23N. Calculate the resultant force.

Consider a Young's two-slit experiment in which the wavelength of light is 37% smaller than the distance between the slits.

Which of the following situations would produce an average velocity of zero? A) a round-trip to school and back B) a horse galloping in a field C) the criss-crossing path of a flying bug D) a trip, first to the moon, then onto Mars