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Hearing Science > Physics > Flashcards

Physics Flashcards

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1
Q

the science of matter and energy and the interactions between them

A

physics

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2
Q

acoustics, optics, mechanics, thermodynamics, electromagnetism, atomic physics

A

fields of physics

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3
Q

length, volume, mass, density

A

properties of objects

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4
Q

every physical measurement consists of two elements:

A

magnitude and unit of measurement

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5
Q

the length of the shortest line connecting two points

A

distance (d)

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6
Q

the amount of space occupied by a surface, m^2

A

area (a)

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7
Q

the amount of space occupied by a substance or object, m^3

A

volume (v)

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8
Q

the amount of matter present in a substance

A

mass (m)

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9
Q

the force of gravity acting on an object

A

weight (w)

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10
Q

= m x g

A

weight

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11
Q

the amount of matter in a given unit of volume

A

density (p)

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12
Q

=m/v

A

density (p)

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13
Q

the property that allows matter to recover its size and shape after it has been expanded or compressed

A

elasticity

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14
Q

is needed for sound to be created and for sound to travel

A

elasticity

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15
Q

the branch of physics that describes the motion of objects in space without considering the cause of the motion

A

kinematics

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16
Q

focuses on the relationship among displacement (d), velocity (v), acceleration (a), and time (t)

A

kinematics

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17
Q

are described by a magnitude and a unit (distance, volume, density, temperature)

A

scalars

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18
Q

are described by a magnitude, a unit, and a direction (displacement, velocity, acceleration. force)

A

vectors

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19
Q

is represented by an arrow with a specific magnitude and direction

A

vector

20
Q

a change in position

A

displacement (d)

21
Q

it is the distance from the original position to the final position, not the path taken to get there

A

displacement (d)

22
Q

the rate of displacement, m/s

A

velocity (v)

23
Q

= displacement/ time, d/t

A

average velocity (Vavg)

24
Q

the rate of change in velocity, m/s^2

A

acceleration (a)

25
Q

=velocity/ time= delta y/delta x= v2-v1/t2-t1

A

average acceleration (aavg)

26
Q

the direction of acceleration is influenced by:

A

motion and speed of acceleration

27
Q

indicates either that the object is accelerating in the negative direction or decelerating in the positive direction

A

negative acceleration

28
Q

the study of the effects of forces on the state of an object or system of objects

A

dynamics

29
Q

is a push or pull, newton (N)

A

force (F)

30
Q

inertia: object at rest will remain at rest, object in motion will remain in motion

A

newtons first law

31
Q

an objects acceleration is proportional to the force exerted on the object and inversely proportional to the mass of the object, f = m x a

A

newtons second law

32
Q

for every action there is an equal and opposite reaction

A

newtons third law

33
Q

the effect of the force (F) moving an object over a distance (d), in joules (J)

A

work (W)

34
Q

= F x d

A

work (W)

35
Q

if displacement does not occur then:

A

no work is done

36
Q

the ability or capacity of an object to do work

A

energy (E)

37
Q

is stored in an object and gradually expended when object does work, in joules (J)

A

energy

38
Q

is future work

A

energy

39
Q

is used energy

A

work

40
Q

the energy of an object due to its position within a given physical system or environment

A

potential energy (Ep)

41
Q

the energy of motion that is carried by an object due to its velocity

A

kinetic energy (Ek)

42
Q

the main source of Ep but not its only one

A

gravity

43
Q

a source of Ep

A

elasticity

44
Q

states that energy can change from one form to another but cannot be created nor destroyed

A

law of conservation of energy

45
Q

Ek can be converted into Ep and vice versa or transmitted from one system to another

A

law of conservation of energy

46
Q

the rate at which a system is gaining or losing energy, watt (W)

A

power (P)

47
Q

= W/t = E/t

A

power (P)

Hearing Science (2 decks)

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