UNE PHYS 1010 Midterm Review questions
|\ |\ |\ |\ |\ |\
with answers |\
What determines the validity of a model?
|\ |\ |\ |\ |\ |\
Experimental proof, even under limited situations |\ |\ |\ |\ |\
Which is true of significant figures?
|\ |\ |\ |\ |\
When multiplying or dividing measured values, final answer cannot contain
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
more significant figures than the least precise value
|\ |\ |\ |\ |\ |\ |\
Match the item with the appropriate order of magnitude of length
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Grain of Sand: 10(-3) m
|\ |\ |\ |\
Wavelength of visible light: 10(-6) m |\ |\ |\ |\ |\
Diameter of Earth: 10(7)m |\ |\ |\
Greatest ocean depth: 10(4) m |\ |\ |\ |\
Length of a football field: 10(2) m
|\ |\ |\ |\ |\ |\
Which option best describes a model?
|\ |\ |\ |\ |\
A model is a representation of something that is often too difficult to display
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
directly
Why are models particularly useful in Relativity or Quantum mechanics?
|\ |\ |\ |\ |\ |\ |\ |\ |\
Quantum mechanical objects are too small to be observed with a common
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
microscope
Under what circumstances is classical physics a good approximation to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
modern physics? |\
Objects must be traveling at about <1% of the speed of light
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
We will be using models to represent physical concepts in this course
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
, True
What is the area of a circle 3.102 cm in diameter?
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
7.557 cm^2 |\
If a marathon runner averages 9.50 mi/h how many minutes does it take
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
him or her to run a 26.22 mi marathon?
|\ |\ |\ |\ |\ |\ |\ |\
165 min |\
A person's blood systolic pressure is measured to be 120 +/- mmHg. What is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
its percent uncertainty?
|\ |\
1.67 % |\
Assuming the same percentage uncertainty, what is the uncertainty in a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
blood pressure measurement of 80 mm Hg?
|\ |\ |\ |\ |\ |\
1.34 mmHg |\
The sides of a small rectangular box are measured to be 1.80 ± 0.01 cm long,
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
2.05 ± 0.02 cm long, and 3.10 ± 0.01 cm long. Calculate the box's volume
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
and approximate uncertainty in cubic centimeters.
|\ |\ |\ |\ |\
11 +/- cm>3
|\ |\
Calculate the approximate number of atoms in a bacterium. Assume that the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
average mass of an atom in the bacterium is ten times the mass of a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
hydrogen atom. (Hint: The mass of a hydrogen atom is on the order of 10^-
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
27 kg and the mass of a bacterium is on the order of 10^-15 kg.)
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
10^11
The speed of sound in water is measured to be 1485 m/s. What is this in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
mph?
3322 mph |\
|\ |\ |\ |\ |\ |\
with answers |\
What determines the validity of a model?
|\ |\ |\ |\ |\ |\
Experimental proof, even under limited situations |\ |\ |\ |\ |\
Which is true of significant figures?
|\ |\ |\ |\ |\
When multiplying or dividing measured values, final answer cannot contain
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
more significant figures than the least precise value
|\ |\ |\ |\ |\ |\ |\
Match the item with the appropriate order of magnitude of length
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Grain of Sand: 10(-3) m
|\ |\ |\ |\
Wavelength of visible light: 10(-6) m |\ |\ |\ |\ |\
Diameter of Earth: 10(7)m |\ |\ |\
Greatest ocean depth: 10(4) m |\ |\ |\ |\
Length of a football field: 10(2) m
|\ |\ |\ |\ |\ |\
Which option best describes a model?
|\ |\ |\ |\ |\
A model is a representation of something that is often too difficult to display
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
directly
Why are models particularly useful in Relativity or Quantum mechanics?
|\ |\ |\ |\ |\ |\ |\ |\ |\
Quantum mechanical objects are too small to be observed with a common
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
microscope
Under what circumstances is classical physics a good approximation to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
modern physics? |\
Objects must be traveling at about <1% of the speed of light
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
We will be using models to represent physical concepts in this course
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
, True
What is the area of a circle 3.102 cm in diameter?
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
7.557 cm^2 |\
If a marathon runner averages 9.50 mi/h how many minutes does it take
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
him or her to run a 26.22 mi marathon?
|\ |\ |\ |\ |\ |\ |\ |\
165 min |\
A person's blood systolic pressure is measured to be 120 +/- mmHg. What is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
its percent uncertainty?
|\ |\
1.67 % |\
Assuming the same percentage uncertainty, what is the uncertainty in a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
blood pressure measurement of 80 mm Hg?
|\ |\ |\ |\ |\ |\
1.34 mmHg |\
The sides of a small rectangular box are measured to be 1.80 ± 0.01 cm long,
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
2.05 ± 0.02 cm long, and 3.10 ± 0.01 cm long. Calculate the box's volume
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
and approximate uncertainty in cubic centimeters.
|\ |\ |\ |\ |\
11 +/- cm>3
|\ |\
Calculate the approximate number of atoms in a bacterium. Assume that the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
average mass of an atom in the bacterium is ten times the mass of a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
hydrogen atom. (Hint: The mass of a hydrogen atom is on the order of 10^-
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
27 kg and the mass of a bacterium is on the order of 10^-15 kg.)
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
10^11
The speed of sound in water is measured to be 1485 m/s. What is this in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
mph?
3322 mph |\
