- A (acceleration and net force - both negative)
- A (acceleration and net force - both negative)
- A (acceleration and net force - both negative)
- Two stationary net charges - no points had 0 force
- Two stationary net charges - outside points on x-axis deflected to the right
- Standing waves - highest amplitude (obvious)
- Standing waves - lowest frequency (top one of this picture http://img.ultimate-guitar.com/_img/columns/zeg/3-4-1.jpg)
- Standing waves - largest wavelength (top one of this picture http://img.ultimate-guitar.com/_img/columns/zeg/3-4-1.jpg)
- Charged particle repelled from wire (3 question set)
- Two wires with current in same direction attract (3 question set)
- Charge deflected parallel (3 question set)
- Largest change in momentum = straight line graph with largest area under curve
- asteroid would appear to have the greatest length to 0.1c
- Galileo didnt discover expanding universe
- Superconductivity = low temperature electronic devices
- Light bulb only gave off radiation
- Convex mirror produced the virtual image (image was behind mirror and smaller)
- Image formed at 15 cm on other side of convex lens.
- Image of child was 10.5m from adult (real adult not image)
- If the switch were closed the bulb NOT in the parallel would have the greatest current
- The consensus is that all 3 brightness would change if the switch would close --> however i disagree and only the ones in the parallel would change (see my post #67)
- Curved acceleration-time graph - increasing speed until constant speed
- Resistors are affected by length, area, and temperature
- Change in internal energy = -12J
- Total kinetic energy of ball being dropped = 120J
- question 74: direction cannot be found because magnetic field direction is not known
- last question: alternating loud, soft (changing intensity)
- average speed of the snail 2m/hr
- magnitude of electric field = V/d
- slope of graph = .33ohms
- 16 decays per second 32 None of the above affected radioactivity of an element
- Atom loses energy when emitting photon
- amount of time doesnt affect the heat i think Q=mc(delta)T
- smaller hole and larger wavelength would make single slit diffraction larger
- time objects were in contact 0.1s
- the force on object makes it go in a circle
- linear expansion? 10.006
- photon has no mass
- i remember getting 36 photons as an answer somewhere
- doppler effect = two objects moving relative to each other 42 inducing electric field moving the coil and wire
- increasing speed equals increased kinetic energy (pendulum)
- force acting against pendulum = decreased kinetic energy, increased potential energy?
- voltmeter connected in parallel, ammeter connected in series
Asteroid longest length would be on the asteroid right because same reference frame
For 44, shouldn’t both K and U decrease since displacement is decreasing, meaning the pendulum goes up less than before?
Wasn’t 4 no 0 e field not 0 force
Slope of graph was 3 ohms it was 12 V/4 Amps
For 4 I thought that the postitive & negative fields canceled each other out at the opposite/furthermost points?
How about the one that was like constant mass but increased momentum? I thought it was higher velocity but the answer choice said “high” velocity, which is kinda vague, so I chose accelerating. But that’s not really valid because the motion could be going in circle and actually decrease in momentum.
I also chose accelerating because none of the other choices really worked
Pearl were they both positive charges? I don’t remember
THe only two choices that could be correct were high velocity and accelerate. The other three were like decrease the speed,change the gravitational field(???), and some other obviously wrong answer. I also put accelerate because it made more sense in that it basically means change (increase) the velocity
Wait either way since they were the same magnitude charge, they can’t cancel out
For the one it said it threw a ball horizontally and it asked which would have the least effect on its horizontal distance? It was the gravitational field on top of it or whatever right? Bc it was near earth and the Gravity doesn’t change much
i also put gravitational field bc given the radius of the earth, change in height in terms of meters is not gonna do much to change the field.
Was so unprepared for the precision questions… how do you answer those?
You don’t
Oh now I’m not so sure I thought that they were opposite charges
The one that said which would change the electric potential energy of the system with one chafe in place and one free to move, it was by moving it closer and farther right? B/c EPE =kqq/r so then changing r changes EPE???
Pearl I don’t think it matters though right? Because the magnitude was the same so
there was one question saying constant velocity than uniformly decreasing, so would the second part of the two second interval be slanting down?