Measurement & Units
What is nuclear physics?
Nuclear physics involves the study of the components, structure, and behavior of the nucleus of the atom. It has a number of practical applications in developing nuclear energy, archeological dating, smoke detectors and nuclear medicine.
Convert to scientific notation:
25,360
2.536 X 104
Multiply the following:
(2 x 104) x (8.21 x 103) =
1.642 x 108
The unit for liquid volume is the Liter. What is an associated instrument of measurement for liquid volume?
Measuring/Graduated Cylinder
What is density?
The measure of how much matter is in a given space.
What is the SI Unit for the physical quantity mass?
Kilogram (kg)
Convert to ordinary form:
3.425 X 108
342,500,000
Divide the following:
(7.1 x 106) / (8.2 x 105) =
8.7 x 100
What is the formula for the area of a triangle?
½ x b x h
What is the formula to calculate density?
Density = Mass / Volume
Density is what type of quantity? (Base or derived)
Derived
Add the following:
(4.3 x 108) + (2.0 x 106) =
4.32 x 108
Multiply the following:
(0.9 x 104) x (1.14 x 107) =
1.026 x 1011
A sheet of plywood is 250 cm long and 125 cm wide. What is the area of the sheet of plywood (in cm2)?
31,250 cm2
In an experiment to determine the density of copper, the student measured the mass and volume of a sample of copper.
The measurements were as follows:
Volume of copper = 119.5 m3
Mass of copper = 204.5 kg
What is the correct value of the density?
1.711 kg/m3
What physical quantity does the stopwatch measure?
Time
Add the following:
(5 x 10-2) + (1.6 x 10-3) =
5.16 x 10-2
Divide the following:
(28 x 109) / (5 x 105) =
5.6 x 104
Find the area of a circle with a radius of 8. Round to the nearest whole number.
201
A solid rectangular box has a length of 6 cm, a width of 4 cm, and a height of 5 cm. Work out the density of the box if the mass of the box is 150 grams.
1.25 g/cm3
In a biology lab, a student measures the heart rate of a subject at 80 beats per minute, while the accepted value is 74 beats per minute. Calculate the percent error in the heart rate measurement. (Round to two decimal places)
8.11%
Oprah Winfrey's salary as a TV talk show host was reportedly $3.5 x 106 for one year. Write this in ordinary form.
$3,500,000
The diameter of the sun is 1.4 x 106 km. The diameter of the earth is 1.28 x 104 km. How many times greater is the diameter of the sun than the diameter of the earth?
Hint: Divide the diameter of the sun by the diameter of the earth.
1.09375 x 102
Find the area of a triangle that has a height of 4m and a base of 3.5m, in scientific notation.
7.0 x 10^0 m2
A gas has a density of 0.4 g/L, and its volume is 20 liters. What is its mass?
8 grams