Physics Units Level: High School
One student using unit analysis , says that the equation v = ax is dimensionally correct . Another says it isn’t . With whom do you agree , and why ? In the equation , v is velocity , a is acceleration , and x is distance .
Physics Units Level: High School
What are the units of mass and the units of weight for the metric system and the English system ?
Physics Units Level: High School
The principal reason that scientists use metric units rather than English units is thata) Metric units are more convenient sizes
b) Conversions between units is easier .
c) metric units are more familiar.
Physics Units Level: High School
For each set of units , identify whether they are units of force , work (or energy ) , power or momentum .Ns
Kg m^2/s^2
Kg m/s^2
Nm
J/s
kW hr
Physics Units Level: High School
The pressure reading from a barometer is 742 mm Hg . Express this reading in kilopascals , kPa .
Physics Units Level: High School
When one gram of gasoline burs in a car’s engine , the amount of energy given off is approximately 1.03 x 10^4 cal . Express this quantity in joules .
Physics Units Level: High School
Units
Analysis of an air sample reveals that it contains 3.5 x 10^-8 g/l carbon monoxide . Express the concentration of carbon monoxide in lb/ft^3 .
Physics Units Level: High School
Measurement and Error Analysis
By using the available equipment and references , a technician has determined the average mass (m), radius (r) and volume (v) for a shipment of metal right circular cylinders :m = 71.8 plus or minus 1.2 g
r = 0.57 plus or minus 0.05 cm
v = 9.42 plus or minus 0.64 cm^3
Look at the equation used to calculate the frictional error in cylinder height in question 392 . Based on the given numbers , which term (parameter) contributes most to the calculated uncertainty in cylinder height ?
Physics Units Level: High School
Measurement and Error Analysis
By using the available equipment and references, a technician has determined the average mass (m), radius (r) and volume (v) for a shipment of metal right circular cylinders :m = 71.8 plus or minus 1.2 g
r = 0.57 plus or minus 0.05 cm
v = 9.42 plus or minus 0.64 cm^3
Using the equation shown in the above answer, what is the calculated uncertainty (standard deviation) for the average cylinder height ?
Physics Units Level: High School
Measurement and Error Analysis
By using the available equipment and references, a technician has determined the average mass (m), radius (r) and volume (v) for a shipment of metal right circular cylinders :m = 71.8 plus or minus 1.2 g
r = 0.57 plus or minus 0.05 cm
v = 9.42 plus or minus 0.64 cm^3
What is the equation used to calculate the frictional error in cylinder height based on the answer that you obtained in the above question ?
Physics Units Level: High School
Measurement and Error Analysis
By using the available equipment and references, a technician has determined the average mass (m), radius (r) and volume (v) for a shipment of metal right circular cylinders :m = 71.8 plus or minus 1.2 g
r = 0.57 plus or minus 0.05 cm
v = 9.42 plus or minus 0.64 cm^3
What is the average height for each metal right circular cylinder ?
Physics Units Level: High School
Measurement and Error Analysis
By using the available equipment and references , a technician has determined the average mass (m) , radius (r) and volume (v) for a shipment of metal right circular cylinders :m = 71.8 plus or minus 1.2 g
r = 0.57 plus or minus 0.05 cm
v = 9.42 plus or minus 0.64 cm^3
What is the average density of each metal cylinder ?
Physics Units Level: High School
A 747 jetliner is cruising at a speed of 520 miles per hour . What is the speed in kilometers per hour ?
Physics Units Level: High School
If a mass of a wasp is 5 x 10 - 6kg , what is the mass in grams , milligrams , and micrograms ?
Physics Units Level: High School
What are the correct conversion between m^2 , cm^2 and mm^2 when determining areas of surfaces ?