PHYS 165 MODULE 1 EXAM QUESTIONS AND ANSWERS 2025

PHYS 165 MODULE 1 LATEST
EXAM

*Classical physics* is an excellent approximation as long as three things
are true. Which of the following statements are NOT one of these three
things?


A) Matter must be moving at speeds less than about 1% of the speed of
light.
B) Friction acting on the object must be so small that it can be ignored.
C) The objects dealt with must be large enough to be seen with a
microscope.
D) Only weak gravitational fields, such as the field generated by the
Earth, can be involved. - ANSWERS-A) Matter must be moving at
speeds less than about 1% of the speed of light.
*B) Friction acting on the object must be so small that it can be
ignored.*
C) The objects dealt with must be large enough to be seen with a
microscope.
D) Only weak gravitational fields, such as the field generated by the
Earth, can be involved.


Modren Physics:
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, PHYS 165 MODULE 1 LATEST
EXAM
1) Relativity- above 1% the speed of light
2) Quantum Mechanics- objects smaller to be seen with a microscope


Besides factors that are unique to the situation, the factors contributing
to uncertainty in a measurement include:


A) Limitations of the measuring device.
B) The skill of the person making the measurement.
C) The age of the measuring device
D) Both A and B - ANSWERS-A) Limitations of the measuring device.
B) The skill of the person making the measurement.
C) The age of the measuring device
*D) Both A and B*


The mass of a block of wood is reported as 458 ± 21 g. What is the
percent uncertainty? - ANSWERS-(21/458) x (100) = 4.58
4.6 %




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