Why can't perpetual motion not work on earth?

A train is traveling at a speed of 75km/hr. The brakes are applied to produce a uniform acceleration of - 0.5 m/s2. Find how far the train goes before it stops?

Which unit of measurement should be used for the vertical axis? A. kg B. cm C. mL D. s

A man weighing 750 n and a woman weighing 500 n have the same momentum. what is the ratio of the man's kinetic energy km to that of the woman kw?

What is the connection between angle of incidence and angle of reflection

What is determined by motion and the spacing of particles?

Which of the following indicates that a ChemicL change has taken place? (A) a change from liquid to a gas (B) an increase in the volume of a substance (C) a change in the color of a substance (D) a change from a solid to a liquid A precipitate is a

Which of these circuit schematics has an ammeter?

What is the meaning of the word corrosion?

Which change occurs when an atom undergoes alpha decay?

the line on the position time graph show the velocites of different vehicles which line represents a vehicle moving at constant velocity