Electrostatic & Energy ch.3 Flashcards

1
Q

what travels in a straight line

A

waves

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2
Q

the distance between individual crests and troughs

A

wavelength

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3
Q

the number of times that wave happens

A

frequency

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4
Q

long distance and low frequency =

A

little energy

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5
Q

short wavelength =

A

high frequency and a lot of energy

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6
Q

wilhelm roentgen

A

discovered xrays in 1896

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7
Q

electron being added/subtracted from object

A

electrostatics

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8
Q

object is electrified in what 3 ways

A

contact, friction, induction

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9
Q

conductors

A

water and copper

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10
Q

insulators

A

rubber, plastic, glass

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11
Q

electrical current as package or quantity of electrons flowing within a period of time

A

amp

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12
Q

used in radiology to regulate a number of electons used to xray photons

A

milliamperes

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13
Q

force that draws electrons from an area in excess to an area deficient in electrons

A

electromotive force

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14
Q

electromotive force measures through ___

A

volt

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15
Q

potential difference

A

measurement of full vs measurement of empty

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16
Q

resistance

A

opposite of current flow.

17
Q

decrease amount of electrical current. important to keep energy level

A

resistance