Physics is concerned with which of the following matters?
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1
Question 2
2.
Measuring temperature would most likely involve which major area in physics?
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1
Question 3
3.
A physicist who studies the behavior of submicroscopic particles is working in which area within physics?
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1
Question 4
4.
After making observations and collecting data that leads to a question, a physicist will then
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Question 5
5.
How many variables may be tested legitimately in any one experiment?
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Question 6
6.
Why do physicists use models?
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Question 7
7.
Which of the following represents a system?
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Question 8
8.
Models can do all of the following except
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1
Question 9
9.
Describe a situation that uses the processes of the scientific method. Explain how the scientific processes are used in that situation.
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1
Question 10
10.
What is the first step toward simplifying a complicated situation, and what are three ways to summarize a complicated situation?
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1
Question 11
11.
What is the SI base unit for length?
a. meter
b. kilogram
c. kilometer
d. second
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Question 12
12.
What quantity does the kilogram measure?
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1
Question 13
13.
In scientific notation, 674.3 mm equals
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1
Question 14
14.
In scientific notation, 0.000 005 823 mg equals
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1
Question 15
15.
The average mass of a proton is 1.673 ´ 10-27kg. What is this mass in grams?
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1
Question 16
16.
The accepted value for free-fall acceleration is 9.806 65 m/s2. Which of the following measurements is the most accurate?
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1
Question 17
17.
Precision describes
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Question 18
18.
How many significant figures does 50.003 00 have?
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1
Question 19
19.
How do significant figures indicate a measurement’s precision?
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1
Question 20
20.
Calculate the area of a room whose length is 15.23 m and width is 8.7 m. Express your answer in scientific notation and with the correct number of significant digits correct unit.
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1
Question 21
21.
Based on the data from the Data Table 1, which of the following statements is correct?
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1
Question 22
22.
What does Graph 1 below show about the heating rate of substance A versus substance B?
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1
Question 23
23.
Which of the following equations best shows the average relationship between temperature and time for substance B as given in Table 1 and Graph 1?
a. DT = 0.07(Dt) c. (DT)2 = 0.7(Dt)
b. DT = 0.07(Dt)2 d. DT = 7.4(Dt)
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1
Question 24
24.
What does the symbol 𝛥m represent?
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1
Question 25
25.
What is the standard abbreviation for seconds?
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1
Question 26
26.
All of the following are unit abbreviations except which one?
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1
Question 27
27.
If the final answer’s dimension is to be in length, which of the following operations is correct?
a.
b.
c.
d.
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1
Question 28
28.
Using the order-of-magnitude method of calculation, estimate how long it would take a car moving at 109 km/h to travel 10450 km.
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Question 29
29.
A student measuring the mass of a standard brass mass labeled "50.0 g." When she measures the mass on a triple-beam balance, the balance reads 50.9 g, 51.0 g, 50.8 g, and 50.9 in four successive measurements. The equipment and the brass mass have recently been calibrated by a professional.
What is the most likely reason that her measurements don't agree with the label?
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Question 30
30.
A student plans to calculate the density of a solid brass square. When she measures the mass on a triple-beam balance, she gets 32.8 g, 32.0 g, 31.5 g, and 33.1 g in four successive measurements. The label states that the mass is 33.4 g. Since her mass measurements are different from the label, how will this affect her density calculation?
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Question 31
31.
A student measures the volume of a copper cylinder by displacing water in a graduated cylinder. In successive measurements, the student gets results of 32.2 mL, 32.4 mL, 31.8 mL, and 31.9 mL. What is the best way to record the resulting volume of the cylinder?
Required
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Question 32
32.
The value of the speed of light is now known to be 2.997 924 58 x 108 m/s. Express the speed of light with three significant figures
Required
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Question 33
33.
The value of the speed of light is now known to be 2.997 924 58 x 108 m/s. Express the speed of light with five significant figures
Required
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Question 34
34.
The value of the speed of light is now known to be 2.997 924 58 x 108 m/s. Express the speed of light with seven significant figures
Required
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Question 35
35.
Perform the following calculation to the right number of sig figs: