The fundamental branches of physics are classical mechanics, electromagnetism (including optics), relativity, thermodynamics, and quantum mechanics.
How was the length of a standard meter redefined in the year 1983?
Since 1983 the meter has been defined as the distance light travels in a vacuum in exactly 1⁄299,792,458th of a second
PHYSICS Short Answer To two significant figures, what is the index of refraction of air?
If blue light is combined with green light, what color of light is produced?
Considering the specific heat of aluminum is 0.21, iron is 0.10, and lead is 0.03, which metal will show the largest increase in temperature per calorie added to one gram of that metal?
This person established the one fluid theory of electricity and performed some of the first investigations into electrical grounding and insulation
Assuming g = 9.8 m/sec2, what is the weight on Earth, in Newtons, of a 60 kilogram person?
What secondary color of light is produced by mixing the primary colors of red and blue?
If the distance separating two charges is doubled, the force between them decreases by what multiple factor?
For two objects separated by a distance d, if the mass of one of the objects is doubled, what will happen to the gravitational attraction between them?
For projectiles fired at identical speeds but various angles from the ground, neglecting air resistance and the curvature of the Earth, at what angle will the maximum horizontal distance be attained?
What is the term for the speed at which an object will overcome the gravitational attraction of the Earth?
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