181⟩ Sound frequencies below 16 Hertz are usually referred to by scientists as
infrasonic
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192 Physics Questions And Answers
182⟩ Heat cannot pass from a cooler substance to a warmer substance without some other process being involved. This is an example of which law of thermodynamics?
the second law
183⟩ What is the dramatic increase in amplitude called when the frequency of forced vibrations on a body matches the bodys natural vibration frequency?
resonance
184⟩ Who determined that the square of a planets period is proportional to the cube of its average distance from the sun?
Kepler
185⟩ A color made from the addition of two primary colors is called
secondary color
186⟩ What law yields an equation that is used in determining crystal structure from interference patterns produced by monochromatic X-rays?
Bragg's Law
187⟩ In radio transmission, what does the acronym AM stand for?
amplitude modulation
188⟩ A coil of wire that produces a magnetic field is typically called a
solenoid
189⟩ What is the name of the device that is made by combining two basic types of solid state rectifiers allowing the device to both rectify and amplify a current?
transistor
190⟩ All elements with an atomic number greater than what number are unstable?
83
191⟩ What do you mean by diffraction and what is/are the proper condition/conditions for it?
192⟩ A car traveling at 30mph ( =13.4 m/s) & it slams on its brakes. ( the car is decelerated by the force of the friction 0.7..f *distance x. (weight=mg) how far will the car go before it stops?
6.27m
