Reducing friction in a machine
a. decreases its actual machine advantage
b. decreases the work output
c. increases its efficiency
d. increases its ideal mechanical advantage

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Asample of a gaseous substance changes into a liquid

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field

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