EP1 Flashcards
(21 cards)
Two people on ice rink, want to move to edge can they?
No they will end up in same spot
The device explodes into two pieces. The sum of momentum, can the second piece move at an angle, direction of second piece?
Zero, no, negative X
Rank spheres difficult to rotate
all equally difficult
Beetle on a disk like a merry go round. Beelte goes towards center what happens
angular speed increases
Rank containers full of liquid with pressure at same height
All same pressure
Speed compared to a 1/2 inch pipe to 1-inch pipe
Speed quadroupled
Square with 25% gone. Where is the most rotational inertia?
The corner where the missing material is
Fully submerge an irregular shape in fluid. What happens when it is released
It will move down
(U tube) Where is red liquid denser than grey liquid
Where red is holding down grey (grey is higher than red)
3 disks, Which disk will accelerate faster?
Lighter outside, heavier inside
Simple harmonic motion (with sin graph) what is phi?
-pi/2
four oscillators have mass on string. Which have same frequency?
use frequency=1/(2pi*(m/k))^(1/2) and see which match
Which oscillator has a navigate velocity (graph with 3 waves)
Look for negative slope at (0,0)
Which points are moving upwards (graph of a sin wave)
Points on the downward slope
Which is the longest wavelength?
the one with the least amount of peaks
Which oscillator has a navigate velocity (graph with 3 waves)
Look for a negative slope at (0,0)
Wave from emitter. What’s the offset?
In phase 2 full wavelengths. (L-L)/2
Four pipes producing sound of same frequency. Which is the longest?
The last pipe on the bottom
Materials ABC are lined up next to each other. Which temp difference is the largest?
312
Materials ABC are solids at their melting temp. What is the greatest fusion heat?
Do Q=mL
If the metal square with a circle cut out of it expands what happens to the hole in the middle?
It will grow
