According to the scientific method, why does a physicist make observations and collect data?
What is "To ask a Question"
100
What two dimensions, in addition to mass, are commonly used by physicists to derive additional measurements?
What is "length and time."
100
What is the area of physics that studies motion and its causes?
What is "mechanics."
100
The radius of Earth is 6 370 000 m. Express this measurement in scientific notation with the correct number of significant digits.
What is "6.37 x 10^6 m"
100
What is 2 hours 10 min expressed in seconds
What is "7.8 x 10^3"
200
According to the scientific method, how does a physicist formulate and objectively test hypotheses?
What is "by experiments."
200
The symbol mm represents a
What is the "millimeter."
200
A baker makes a loaf of bread. Identify the area of physics that this involves.
What is "thermodynamics."
200
Calculate the following, and express the answer in scientific notation with the correct number of significant figures: 10.5 x 8.8 x 3.14
What is "2.9 x 10^2"
200
What is 16 g expressed in micrograms?
What is "1.6 X 10^7"
300
In the steps of the scientific method, what is the next step after formulating and objectively testing hypotheses?
What is "interpreting the results."
300
The SI base unit used to measure mass is the
What is "kilogram"
300
A hiker uses a compass to navigate through the woods. Identify the area of physics that this involves.
What is "electromagnetism."
300
Calculate the following, and express the answer in scientific notation with the correct number of significant figures: (0.82 + 0.042)(4.4 x 10^3)
What is "3.8 x 10^3"
300
What is 35 km/h expressed in meters per second?
What is "9.7 m/s"
400
Three values were obtained for the mass of a metal bar: 8.83 g; 8.84 g; 8.82 g. The known mass is 10.68 g. The values are
What is "precise"
400
Estimate the order of magnitude of the length of a football field.
What is "10^2 m"
400
The area of physics involved in testing the effects of extreme heat and cold on an alloy.
What is "thermodynamics"
400
How many significant figures does 0.050 200 mg have?
What is "5"
400
The radius of Earth is 6 370 000 m. Express this measurement in km in scientific notation with the correct number of significant digits.
What is "6.37 x 10^3 km"
500
The Greek letter (delta) indicates a(n)
What is "difference or change"
500
The sun is composed mostly of hydrogen. The mass of the sun is 2.0 x 10^30 kg, and the mass of a hydrogen atom is 1.67 x 10^-27 kg. Estimate the number of atoms in the sun.
What is "10^57"
500
The area of physics involved in testing whether the alloy can affect a magnetic compass needle.
What is "electromagnetism."
500
The spped of light is known to be 2.99792458 x 10^8 m/s. Express this value with 3 significant figures.
What is "3.00 x 10^8"
500
If the change in position x is related to velocity v (with units of m/s) in the equation x = Av, the constant A has which dimension?