The process by which water diffuses from a region of greater concentration to a region of lesser concentration is called

A 2-kg book is pushed along a table with a force of 4N. Find the frictional force on the book if the book's acceleration is 1.5 m/s squared. Explain how to find frictional force.

How many lenses does a microscope use?

If a star is 20 light minutes away and it stops creating light, how long will it be before we stop seeing the light?

Billy goes ice skating with his friend Sally. While they are both standing on the ice before skating Billy pushes Sally. What is Billy's (m = 55 kg) velocity after he pushes Sally if Sally has a mass of 45 kg and moves off at 2.5 m/s?

Whats quantum physics?

Sara takes a 40-minute bus ride from her home to her grandparents' home, which is 8 km away. What is the average speed of the bus?

Power is equivalent to the energy released divided by the time taken to release the energy. true false

Consider the following four cases of a person applying force to an object: (1) a force of 5 N directed parallel to the floor is pulling a box over a distance of 1 m.

What is the maximum possible torque on a sphere if the electric field between the transparent plates is 4.4*105 n/c?

If the phase angle for a block-spring system in SHM is ϕ and the block's position is given by x = xm cos (ωt + ϕ), what is the ratio of the kinetic energy to the potential energy at time t = 0? (Use any variable or symbol stated above as necessary.)