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Physics SAAT > The science of physics > Flashcards

The science of physics Flashcards

1
Q

the common method of testing a device accuracy

A

Two Reading/point Calibration

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2
Q

What’s the symbol for the international system of units

A

SI

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3
Q

What’s precision and what does it depend on

A

the exacatness of a measurement
it depends on:
1.instruments used
2.technique used

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4
Q

What’s accuracy

A

How well the results of the measurements agree or compare with the “real” value

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5
Q

conversion to meter centi

A

x10-2

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6
Q

conversion to meterdeci

A

x10-1

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7
Q

conversion to meterkilo

A

x103

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8
Q

conversion to metermega

A

x106

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9
Q

conversion to metergiga

A

x109

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10
Q

conversion to metertetra

x1

A

x1012

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11
Q

conversion to metermili

A

x10-3

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12
Q

conversion to metermicro

A

x10-6

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13
Q

conversion to meternano

A

x10-9

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14
Q

conversion to meterpico

A

x10-12

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15
Q

formulas for average velocity

A

=displacement/time

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16
Q

formulas for average speed

A

=distance/time

17
Q

formula ofaverage acceleration

A

=change in velocity/change in time

18
Q

what does the slope of a position-timegraph tells us?

And what does its absolute value tell us?

A

slope = average velocity

abs = average speed

19
Q

what does the slope of velocity-timegraph tell us

A

acceleration

20
Q

What soes a **negative acceleration ** tells us about an object

A

velocty=decreases
object=thrown up
speed=decreases

21
Q

What soes a **positive acceleration ** tells us about an object

A

velocity=increases
object=falls down
speed=increases

22
Q

what are the three acceleration formulas?

A
  • Vf=Vi+axTf
  • Df=Di+VixTf+1/2axTf^2
  • V^2f=V^2i+2ax(Df-Di)
23
Q

Examples of contact forces and field forces

A

contact:
friction
air resistance
tension
field:
gravity
magnetic
electric

24
Q

whats the formula for **displacement **

A

velocity x time

24
Q

whats the formula for **displacement **

A

velocity x time

24
Q

whats the formula for **displacement **

A

velocity x time

24
Q

whats the formula for **displacement **

A

velocity x time

Physics SAAT (4 decks)

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