01 Working as a Physicist Flashcards

1
Q

pico

A

x10^-12 (p)

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2
Q

nano

A

x10^-9 (n)

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3
Q

micro

A

x10^-6 (u)

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4
Q

milli

A

x10^-3 (m)

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5
Q

centi

A

x10^-2 (c)

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6
Q

kilo

A

x10^3

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7
Q

mega

A

x10^6

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8
Q

giga

A

x10^9

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9
Q

Terra

A

x10^12

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10
Q

Name the seven base units

A

length
mass
time
current
temperature
amount of substance
luminous intensity

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11
Q

name the seven si units measurements

A

length - meter (m)
mass - kilogram (kg)
time- second (s)
current - Ampere (A)
temp - Kelvin (K)
amount of substance - mole (mol)
luminous intensity - candela (cd)

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12
Q

What are the two rules for combining uncertainties?

A
  1. multiplying/ dividing two measurements: percentage uncertainties are added.
  2. measurements that are subject to powers: multiplied by the power.
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13
Q

how do you calculate percentage uncertainties?

A

(resolution/reading) *100

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14
Q

What is a scalar quantity?

A

A quantity with magnitude only

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15
Q

What is a vector quantity?

A

A quantity with magnitude and direction

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16
Q

give me 8 examples of scalar quantities

A

speed
distance
energy
time
power
charge
current
voltage

17
Q

give me 4 examples of vector quantities

A

velocity
displacement
forces
acceleration

18
Q

define speed

A

rate of change of distance

19
Q

define velocity

A

rate of change of displacement

20
Q

define distance

A

distance refers to how much ground an object has covered during its motion

21
Q

define displacement

A

displacement refers to how far out of place an object is and is the overall change in the objects position