An 8.0-newton wooden block slides across a
horizontal wooden floor at constant velocity.
what is the magnitude of the force of kinetic
friction between the block and the floor?
(1) 2.4 n (3) 8.0 n
(2) 3.4 n (4) 27 n

How would doubling the made of an object change the objects potential energy

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature

First to answer will be the brainliest i need the answer asap