The force of 100n acts on a body moving with constant velocity of 20m/s on a floor in a strainght line. what is the force of friction between the body and the floor?

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

True or false graphs must include scales that increase by the same amount

How can you measure the amplitude of a longitudinal wave?