-
9.8 m/s^2
acceleration of gravity
-
forces equal and opposite
newtons 3rd law
-
(change in velocity/change in time)
acceleration
-
protons plus neutrons
mass
-
(force) x (distance)
work
-
-
tendency for stationary objects to stay stationary, etc
inertia
-
(mass) x (velocity)
momentum
-
distance divided by time in a direction
velocity
-
D= (Ag x t^2) / 2
free fall distance
-
(mass) / (volume) =
density
-
mass x acceleration =
force
-
mass times height =
potential energy
-
1/2 (mass) x (velocity)2
kinetic energy
-
absolute zero
-273 degrees C
-
heat transfer by fluids
convection
-
movement of heat
thermodynamics
-
level of disorder
entropy
-
heat to raise 1 g of water to 1 degree F
calorie
-
calories per gram x degrees c
specific heat
-
heat transfer by waves
radiation
-
heat transfer by touch
conduction
-
heat to raise 1 lb of water to 1 degree F
BTU
-
measure of hot and cold
temperature
-
film forming process
calendaring process
-
Die shaped liquid/melted plastics
extrusion process
-
injection molding
melted TP pressured into molds
-
air blown parts from melted TP
blow molding process
-
heat hardened plastics
thermosetting polymers
-
Tensile strength=
pulling mode strength
-
flexural strength=
bending mode strength
-
strength to resist pressing mode=
compression strength
-
liquid thickness (resisting flow)
viscocity
-
sag under pressure/room temp is known as:
creep
-
TP softening/ flow temperature is called:
melting range
-
crack resistance-
impact strength
-
resistence to gas through plastic
permeability
-
sagging under heat and pressure=
heat distortion temp
-
ability to stretch-
% elongation
-
bottles and milk containers=
PVC (polyvinylchloride)
-
pipe foam insulation, toys
PS, polystyrene
-
foam insulation and cups
LDPE, Low Density Polyethylene
-
Pipe and glass replacement is made up of:
High Density Polyethylene, or HDPE
-
Pipe and Siding is made up of:
Polypropylene, PP
-
coke, water bottles, clothing-
PETE, Polyethylene Terephthalate
-
balanced forces on object
equilibrium
-
what is the shape of planetary orbitals around our sun?
elipse, eliptical
-
The planet where you would weigh the less=
pluto, also mercury
-
the orbit of each planet is an ellipse and the sun is at one focus, what law is this?
Keplars 1st law
-
When does the kinetic energy of planetary orbital equal the potential energy? when is ke=pe?
when earth is half way back towards the sun
-
a collapsed star, gravitational pull, huge mass, huge gravity
Black Hole
-
Which waves are hazardous, short waves or long waves?
short waves
-
the speed at which a planet orbits around another mass
orbital velocity
-
what is the nearest matching planet in mass vs earth?
venus, escape velocity = 10.4km/s
-
orbital velocity quanity for earth?
9.0 km/s
-
escape velocity for earth?
11.2 km/s
-
on which planet would you weigh the most?
jupiter
-
what are four properties of light?
reflection, refraction, transmission, absorption
-
range of visible human vision?
400-800 nm
|
|
