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Physical Science 105 Sem 1 > Study notes physci 105 less death part 2 > Flashcards

Study notes physci 105 less death part 2 Flashcards

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1
Q

wavelength

A

the distance the wave travels during one period (units in time)

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2
Q

two types of interference

A

constructive (addition) destuctive (subtraction)

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3
Q

resonance

A

energy transfer from one object to another

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4
Q

fundamental frequency

A

longest stnding wave a frequency can make

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5
Q

doppler effect

A

the apparent shift of sound a moving observer experiences

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6
Q

shock wave or sonic boom

A

source of doppler effect is moving at or faster than the speed of sound resulting in a wave “pile up”

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7
Q

neucleus

A

positively charged protons

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8
Q

atoms

A

negatively charged electrons

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9
Q

2 kinds of charges

A

like charges repel opposites attract

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10
Q

electrostatic charge

A

an excess or deficiency of electons gains an electric charge

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11
Q

unit of quantity of charge(q)

A

coulomb (C)

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12
Q

coulomb’s law

A

quantity of charge and distance between the charged objects

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13
Q

electric potential energy

A

charge on object and work done to move it

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14
Q

unit of electric potential difference

A

Volt

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15
Q

unit of work done

A

(W) joule

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16
Q

electric current

A

the flow of electric charge

17
Q

3 parts of electric circiut

A

voltage source, continuous path, work accomplished ie volage drop

18
Q

unit of current

A

ampere (I) coulomb/second

19
Q

current occurs with what 2 elements

A

potential difference, electric field

20
Q

opposition to curretn

A

resistance (R)

21
Q

formula for resistance

A

R=V/I

22
Q

unit of potential difference

A

Volt

23
Q

unit of resistance

A

Ohms

24
Q

ohms law

A

ohms = volt/amp

25
Q

what Is the rate of doing work?

A

power

26
Q

formula for power

A

P=W/t

27
Q

formula for electrical power

A

P=IV

28
Q

unit of power

A

watts

29
Q

north seeking pole is?

A

north pole

30
Q

south seeking pole is?

A

south pole

31
Q

transformers

A

step down or up voltage of alternating current

32
Q

batteries connected in series

A

same current , voltages add (fuses and circuit breakers)

33
Q

batteries in parelell

A

voltage same each source , current adds,resistance lowered(household circuits)

34
Q

short circuit

A

a new path of lesser resistance

35
Q

formula for resistance in series

A

Rt=R1+R2+R3+R4

36
Q

Formula for resistance in parallel

A

1/Rt= 1/(R1+R2+R3+R4)

37
Q

units for newton

A

1N=1kg M per s2

38
Q

speed of sound at sea level

A

331 m/s

Physical Science 105 Sem 1 (10 decks)

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