Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
when is terminal velocity reached?
|
when there is no net accel b/c all forces cancel each other
|
|
|
to solve a translational motion problem you should..
|
resolve forces into components
|
|
|
power is defined as…
|
work/time
|
|
|
impulse is defined as
|
J = F*t (change in momentum)
|
|
|
torque is positive when mov't is counter or clockwise?
|
counterclockwise (lefty loosey)
|
|
|
is work a scalar or vector?
|
scalar! Dot product
|
|
|
total momentum of a sys is cons so long as
|
no external forces (like gravity) acting on sys
|
|
|
in terms of thermal expansion, how do α and β relate?
|
B = 3a
|
|
|
3 modes of heat transfer
|
conduction - direct heat transfer via molec collisions; convection - heat transfer by phys motion of heated materials (gas and liq); radiation - heat transfer via electromagnetic radiation
|
|
|
amount of work done can be rep on a graph by…
|
area under PV curve
|
|
|
1 cm^3 = how many ml^3?
|
1
|
|
|
specific gravity
|
density of liq/density of water
|
|
|
how many mmHg in 1 atm?
|
760
|
|
|
gauge pressure is ___
|
additional pressure above atmospheric
|
|
|
in hydraulic lift, how does depth of container relate to area?
|
constant W and cons mass (same vol) so if a1<a2, d1>d2
|
|
|
with continuity eq, must take into account _____ surface areas
|
SUM - include all branches! (A1V1 = A2V2) vel is faster or slower - not greater or less!
|
|
|
elasticity of solids - moduli (describe 2 kinds + dif b/w them)
|
(F/A) / (change x or L / h or L); Young's mod is 1-D and stress applied perp to change vs Shear - parallel stress applied to change affected)
|
|
|
only _____ can experience shear stresses
|
solids
|
|
|
a neg charge will move in ___ direc as electric field
|
opposite
|
|
|
dipole moment 'p' =
|
p = qd
|
|
|
relate force on dipole to direction of E field
|
F = Eq so if q = neg, F = -E
|
|
|
potential difference between two places separated distance d create an electic field, related by:
|
V = Ed (more pot if more sep b/c opp charges attract)
|
