Physics 10 vocab Flashcards

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1
Q

Joseph Black

A
  • thought that heat was an invisible fluid that flowed from hot to cold things
  • lead to unit of calories
  • increase temp of 1g of water by 1 degree
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2
Q

count rumford

A
  • heat is equivalent to energy
  • realtionship between mechanical energy and heat
  • went against caloric theory
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2
Q

james prescott joule

A
  • heat is another form of energy
  • experimented to support connection between Ep and heat, and Ek and heat (Em and heat)
  • agreed with rumford
  • unit of energy, joule, was named after him
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3
Q

chemical energy

A

potential energy stored in chemical bonds of compounds

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3
Q

electrical energy

A

work done by moving charges

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4
Q

nuclear energy

A

potential energy stored in the nucleus of the atom

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5
Q

solar energy

A

energy from the sun

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6
Q

kinetic energy

A

energy of motion

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7
Q

(gravitational) potential energy

A

potential to do work because of an objects position or condition

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8
Q

mechanical energy

A

sum of potential and kinetic energy

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9
Q

thermal energy

A

energy an object has due to the kinetic energy of the particles in the object (heat)

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10
Q

thomas savery

A
  • invented fist successful steam powered pump
  • used to pump water out of mines
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11
Q

thomas newcomen

A
  • his engine relied of atmospheric pressure
  • pressure moves from high to low
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12
Q

james watt

A
  • worked for decades trying to create a more efficient steam engine
  • his became the model for all engines for many years
  • double acting steam engine (piston went in both directions)
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13
Q

Work formula

A
  • W=Fd
  • F=W/d
  • d=W/F
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14
Q

speed formula

A
  • v=d/t
  • d=vt
  • t=d/v
15
Q

velocity formula

A
  • v= d/t
  • t=d/v
  • d=vt
16
Q

acceleration formula

A
  • a=v/t
  • v=at
  • t=v/a
17
Q

efficiency formula

A
  • eff=u/t x100
  • u=eff x t/100
  • t= u x 100/eff
18
Q

Ep formula

A
  • Ep=mgh
  • g=Ep/mh
  • m=Ep/gh
  • h=Ep/mg
19
Q

Ek formula

A
  • Ek=1/2mv^2
  • m=2Ek/v^2
  • v=√2Ek/m
20
Q

1st law of thermodynamics

A

the total energy, including heat, in system and it’s surroundings remains constant

21
Q

2nd law of thermodynamics

A

heat always flows naturally from a hot object to a cold object, but never naturally the other way around

22
Q

work

A

movement of matter from one location to another

23
Q

heat

A

transfer of thermal energy from one object to another

24
Q

scalar and examples

A

quanities that describe magnitude but not direction
* time
* speed
* distance

25
Q

vector and examples

A

quantities that describe direction and magnitude
* velocity
* displacement
* acceleration
* position

26
Q

distance

A

the length of a path between two points

27
Q

displacement

A

straight line distance from one point to another

28
Q

position

A

a specific point relative to a reference point