Zusammenfassung der Ressource
Frage 1
Frage
Which of the following are examples of systematic errors
I. Weighing an object on an electronic balance.
II. Consistently reading meter stick values from an angle.
III. Using an incorrectly calibrated probe in an experiment.
Antworten
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I and III
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I, II and III
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II and III
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I and II
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I
-
II
-
III
Frage 2
Frage
Which statements about uncertainties are true?
I. Every measurement has an uncertainty.
II. Uncertainties are expressions of random error.
III. Uncertainties are always expressed as positive values.
Antworten
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I and II
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I and III
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II and III
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I, II and III
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I
-
II
-
III
Frage 3
Frage
What is the uncertainty in a measurement taken on an electronic balance that reads mass (in grams) to two decimal places?
Antworten
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+/- 0.5 g
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+/- 0.05 g
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+/- 0.005 g
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+/- 0.1 g
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+/- 0.01 g
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+/- 0.001 g
Frage 4
Frage
If a scale reading is quoted as 23.75 ± 0.05 g, which value could not be possible for this reading?
Antworten
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23.72 g
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23.69 g
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23.80 g
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23.78 g
Frage 5
Frage
Find z if:
x = (2.0 +/- 0.2) cm
y = (3.0 +/- 0.6) cm
z = x - 2y = [blank_start](-4.0 +/- 0.9)[blank_end] cm
Hint: answer will resemble this format: (#.# +/- #.##) units
Frage 6
Frage
Which of the following units can be used to measure speed?
Frage 7
Frage
If w = (4.52 +/- 0.02) cm and x = (2.0 +/- 0.2) cm, find z if z = wx
z = [blank_start](9.0 +/- 0.9)[blank_end] cm^2
Hint: Answer will be in this format: (#.# +/- #.#) units
Frage 8
Frage
If x = (2.0 +/- 0.2) cm and y = (3.0 +/- 0.6) s, find z if z = x/y.
z = [blank_start](0.7 +/- 0.2)[blank_end] cm/s
Hint: Answer will be in this format: (#.# +/- #.#) units
Frage 9
Frage
Which of the following are vectors?
Antworten
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Speed
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Time
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Velocity
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Distance
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Displacement
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Acceleration
Frage 10
Frage
Take the equation 2x = (g - y) / 2 and solve for g.
Hint: For your answer, put a space between every character, so 7a+ 3b will look like 7 x + 3 b.
g = [blank_start]4 x + y[blank_end]