What force is required to keep a 245kg wood pallet moving at a constant speed across a concrete floor

The amount of a light a star gives off is called___?

How is the magnetic force on a particle moving in a magnetic field different from gravitational and electric forces.

The shadow cast by a simple stick or obelisk allowed ancient people to

At a distance of 3.5 cm from the center of a very long uniformly charged wire, the electric field has magnitude 2000 N/C and is directed toward the wire. What is the charge on a 1.0 cm length of wire near the center?

In space, astronauts don't have gravity to keep them in place. That makes doing even simple tasks difficult. Gene Cernan was the first astronaut who worked on a task outside a spaceship.

After creating a question and forming a hypothesis, what is the next step in the scientific method

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.51 s after passing his window. Roger's room is on the second floor, 10 m above the sidewalk.

Which statements accurately describe the Doppler effect?

Describe how mass and distance affect gravitational force.

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?