A force

F acts in the x - direction, its magnitude given by F = ax^2, where x is in meters and a = 5.0N/m^2

. Find the work done by this force as it acts on a particle moving from x = 0 to x = 6.0 m.

A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 3.2 s later. If the speed of sound is 340 m/s, how high is the cliff?

A brick is resting on the surface of a flat board. as one end of the board is slowly raised, what change, if any, is there in the normal force exerted on the brick?

Choose all the answers that apply. According to Newton's first law of motion: objects at rest will remain at rest unless acted upon by an outside force an increase in mass will cause an increase in inertia the greater the magnitude of force, the

Cellular respiration is an example of a chemical reaction where energy is released. Which of the following is a reaction where energy is released? A-Exothermic reaction B-Endothermic reaction C-Dissolution reaction D-Acid-Base reaction

A sheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200 C and is permitted to achieve a steady-state diffusion condition.

A massive and a less massive object free-fall at the same rate because A. the ratio of the net force to mass is the same for each B. the gravity is the same C. they weigh the same amount D. they experience the same force of gravity E. none

Which of the following lists the Earth's layers in order from hottest to coldest in temperature? A. outer core, mantle, inner core, crust B. crust, mantle, outer core, inner core C. inner core, outer core, mantle, crust D.

A boy does 465 J of work pulling an empty wagon along level ground with a force of 111 N [31o below the horizontal]. A frictional force of 155 N opposes the motion and is actually slowing the wagon down from an initial high velocity.

Which of the following best explains why the tidal bulges on Earth are larger closest to the Moon compared to the tidal bulges closest to the Sun?

an airplane flies with a constant speed of 600 miles per hour. how long will it take to travel a distance of 2100 miles?