MODERN PHYSICS COMBINED
SET QUESTIONS AND ANSWERS
What is the fundamental standard of mass? - Answer-Kilogram
1/1000 can be expressed exponentially as - Answer-10^-3
1 nanometer (nm) = ______ meters - Answer-10^-9m
1 micrometer = _____ meters - Answer-10^-6 meters
1 microgram (μg) is equal to how many kilograms? - Answer-10^-6 grams
10^9 kilograms
1 nanosecond (ns) is how many seconds? - Answer-10^-9s
Time for light to travel .3m
1 microsecond = ____ seconds - Answer-10^-6
Time for the space station to move 8mm
1 millisecond = _______ seconds - Answer-10^-3 s
Time for a car moving at freeway speed to travel 3cm
1 inch = ___ cm - Answer-2.54
1 pound = __ Newtons - Answer-4.448221615260
Any number that is used to describe a physical phenomenon quantitatively is called a -
Answer-Physical Quantity
Some physical quantity are so fundamental that we can define them only by describing
how to measure them. Such a definition is called an - Answer-Operational definition
When bombarded by microwaves of precisely the proper frequency, cesium atoms
undergo a transition from one state to another. One second is defined as the time