Ch 1 Physical Quantities and Units
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All physical quantities consist of __________ and ___________.
magnitude and unit
What are the 5 base quantities?
mass, length, time, current, temperature
What is the SI unit of mass?
kilogram (kg)
What is the SI unit of length?
meter (m)
What is the SI unit of time?
second (s)
What is the SI unit of current?
ampere (A)
What is the SI unit of temperature?
kelvin (K)
What is the SI unit of speed?
meters per second (m/s)
What is the SI unit of acceleration?
meters per square second (m/s2)
What is the SI unit of density?
kilogram per cubic meter (kg/m3)
What is a scalar quantity?
A quantity with only magnitude.
What is a vector quantity?
A quantity with both magnitude and direction.
Convert 0.001 m to mm.
1 mm
Convert 300 g to kg.
0.3 kg
Convert 0.00001 m to micrometer.
10 micrometer
Convert 200 000 W to MW.
0.2 MW
Convert 20 000 000 J to GJ.
0.02 GJ
Give one example of a vector quantity.
Any of the following is correct: velocity, acceleration, force, displacement, weight.
Give one example of a scalar quantity.
Any of the following is correct: speed, distance, time, mass, current, voltage, resistance etc.
Read the micrometer screwgauge reading. (Include the units)
3.09 mm
Read the vernier caliper reading. (Include units)
10.02 cm
Read the micrometer screwgauge reading. (Include units)
6.84 mm
Read the vernier caliper reading. (Include units)
3.36 cm