If the train has a mass of 188 000 kg and the coefficient of friction on dry steel is 0.41 (static) and 0.38 (kinetic), what is the amount of static and kinetic friction force available to the wheels?

Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance

Give an example in which the electrical energy changes to light energy

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass