Introduction to the Language of Physics

According to the graph of displacement vs. time, what is the object's displacement at time = 60 s?

0.0 m

Express 7.3 mg in g.

0.0073

According to the graph of displacement vs. time, what is the object's velocity at a displacement of 0.2 meters?

0.02 m/s

Make the following prefix conversions. 0.001s =

1

Make the following prefix conversions. Your friend is 1.56 m tall. How many millimeters tall is your friend? 15,600156,0001,560156

1,560

1. an international standardized system of units used to communicate scientific results 2. that which flows onward uniformly; that which allows you to arrange events in sequence 3. the degree of exactness of a measurement; described by the number of significant digits used to express the value 4. the degree to which a measurement approaches a standard or true value 5. a mental or physical construct that describes a physical phenomenon 6. a mathematical problem-solving method that utilizes conversion factors 7. units calculated by multiplication or division from measurement in SI base units 8. a region in space that yields a value for a measurable quantity at every point 9. an area of physics dealing with mathematical methods of describing motion 10. the quantity of matter that a body possesses 11. number expressed as powers of ten

1. SI system 2. time 3. precision 4. accuracy 5. model 6. dimensional analysis 7. derived unit 8. field 9. kinematics 10. mass 11. scientific notation

Make the following prefix conversions. 30,000 m is the same as 30 km. True False

True

Referring to the map of the temperature field in the room, the temperature of the warmest field shown is 74°F. True False

True

That which flows on uniformly, of which a day is a logical portion, is called time. True False

True

1. the degree of exactness of a measurement; described by the number of significant digits used to express the value 2. a branch of mechanics dealing with the mathematical methods of describing motion 3. the degree to which a measurement approaches a standard or true value 4. the quantity of matter that a body possesses 5. units calculated by multiplication or division from measurements in base units 6. a mathematical problem-solving method that utilizes conversion factors 7. number expressed as powers of ten 8. that which flows onward uniformly 9. an international standardized system of units used to communicate scientific results 10. a region in space that yields a value for a measurable quantity at every point 11. a mental or physical construct that describes a physical phenomenon

1. precision 2. kinematics 3. accuracy 4. mass 5. derived unit 6. dimensional analysis 7. scientific notation 8. time 9. SI system 10. field 11. model

Add these measurements, using significant digit rules: 1.0090 cm + 0.02 cm = 1.0291.0301.03

1.03

Express 9.39 x 109 seconds in terms of days. 1.57 x 10 8days 6.52 x 10 6days 3.76 x 10 9days 1.09 x 10 5days

1.09 x 10 5days

ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements. Calculate (4.2 · 105) cm · (4.0 · 10-9) cm2.

1.7 -3

Multiply these measurements, using significant digit rules: 1.27 kg x 9.8 m/s2 =

12

Express 34.0 cm in inches. Remember there are 2.54 cm in 1 inch.

13.4

Make the following prefix conversions. 2 g =

2,000

ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements. Express answer to nearest tenth. 22.002.0 · 10 -3-9 m/day.

2.0 -9

Make the following prefix conversions. 2 km =

200,000

How many significant digits are in the measurement 0.00210 mg?

3

Calculate 9 · 10-5 divided by 3 · 10-9. (Box after the "10" in answer is for the exponent.).

3 4

Add these measurements, using significant digit rules: 56 mg + 3.211 g =

3.267

Calculate 8 · 10-4 divided by 2 · 102. (Box after the "10" in answer is for the exponent.).

4 -6

Referring to the map of the temperature field in the room, what was the largest variation in temperature? 2 degrees 4 degrees 1 degree none of the above

4 degrees

Express 4,560 m in km. Remember to keep the same number of significant figures in your answer as was in the original measurement.

4.56

Calculate 1.6 · 103 times 3.0 · 10-6. (Box after the "10" in answer is for the exponent.).

4.8 -3

Subtract these measurements, using significant digit rules: 43.278 kg - 28.1 g =

43.250

Add these measurements, using significant digit rules: 44.2 cm + 0.123 cm =

44.3

How many significant digits are in the measurement 143,000?

5

ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements. Express 50,000 m/s2 in scientific notation. 5.0 x 103m/s2 0.5 x 105m/s2 5.0 x 104m/s2

5.0 x 104m/s2

Express 0.00005 s in µs.

50

How many significant digits are in the measurement 4,032,010 m/s?

6

How many significant digits are in the measurement 589.040 newtons?

6

Make the following prefix conversions. 600,000 cm =

6

ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements. Express 0.00000000062 kg in scientific notation. 6.2 x 1010kg 6.2 x 10-10kg 0.62 x 10-9kg

6.2 x 10-10kg

How many significant digits are in the measurement 50.003010 nm? 5873

8

Referring to the map of the temperature field in the room, the temperature of the _____________ field shown is 70°F.

coolest

The branch of mechanics dealing with the mathematical methods of describing motion is called

kinematics

The term used to describe the quantity of matter that a body possesses is: density mass volume weight

mass

Referring to the map of the temperature field in the room, where was the warmest field found? inner field middle field outer field none of the above

outer field

Isotherms cannot cross because to cross would indicate two different ________ for the same location.

temperatures