PHY105P Lesson 1

Question 1

predict how nature will behave in one situation based on the results of experimental data obtained in another situation

Answer 1

Physics

Question 2

attempts to describe the basic mechanisms that make our universe behave the way it does

Answer 2

Physics

Question 3

has developed out of the efforts of men and women to explain our physical environment

Answer 3

Physics

Question 4

a process of assigning a quantity to describe a property of an object by comparing it with a standard

Answer 4

measurement

Question 5

a standard should be universal and does not change with time. we need bases of units of measurement that is constant

Answer 5

measurement

Question 6

any number that is used to describee or quantify a physical phenomena

Answer 6

Physical quantity

Question 7

base units

Answer 7

fundamental units

Question 8

unit expressed in terms of the fundamental units. either dimensionless or else are

Answer 8

derived unit

Question 9

le systeme international d’unites. uses meter for length, kilogram for mass,and second for time

Answer 9

SI unit

Question 10

utilizes cm, g, and second for length mass and time

Answer 10

CGS

Question 11

uses foot, slug, and second

Answer 11

BE (British Engineering system) or gravitational version

Question 12

1 meter in ft. and in.

Answer 12

3.28 ft
39.37 inches

Question 13

1 foot in inches

Answer 13

12 inches

Question 14

1 inch to cm

Answer 14

2.54 cm

Question 15

1 mile to ft

Answer 15

5280 ft

Question 16

1 mile to km

Answer 16

1.60934 km

Question 17

1 hr to seconds

Answer 17

3600 seconds

Question 18

1 kg to lbs

Answer 18

2.205 lbs

Question 19

1 gallon to oz

Answer 19

128 oz

Question 20

1 gallon to L

Answer 20

3.7854 L

Question 21

1 yard to ft

Answer 21

3 feet

Question 22

Celsius to kelvin

Answer 22

k= C+273.15

Question 23

Celsius to Fahrenheit

Answer 23

C= (F-32)*5/9

Question 24

Fahrenheit to Celsius

Answer 24

F= (9/5) C+32

Question 25

indicate how close the measured value is to the true value

Answer 25

accuracy

Question 26

how close the values are to all other values of an instrument’s degree of repeatability. how reliably it can reproduce the same measurements over and over. describes the scatter or the variability of a set of measurement made

Answer 26

precision

Question 27

the smallest increment an instrument can detect and display

Answer 27

resolution

Question 28

the upper and lower limits an instrument can measure a value or signal

Answer 28

range

Question 29

the extent by which a value is permitted to vary.

Answer 29

tolerance

Question 30

defines the acceptable limits of variance required for a particular project

Answer 30

tolerance

Question 31

the expression for the level of doubt we have about any measurement. is described in statistical terms

Answer 31

uncertainty

Question 32

The tighter the menstruation of the device you will be using, there will be less

Answer 32

uncertainty