Light of my Life
Why would a red flower appear red to our eyes?
The red light is reflected and all other colors are absorbed, so we see red.
What is focal length?
The distance from the center to the lens to the focal point
What is the unit of resistance?
ohms, ohms, ohms, ohms, OHMMMSSSS
Is there an attractive or repulsive between 3.00 x 10^-5 C and 4.12 x 10^-2 C?
Repulsive
What are the units of current?
amperes, amps
Why does light refract?
The speed of light through a medium has changed.
Images formed by concave lenses are ALWAYS
Virtual
The load across a 55 V battery consists of a series combination of two lamps with a resistance of 125 ohms and 230 ohms. What is the total resistance?
355 ohms
Two charges are 8 m apart and have a force of 2N. What will the new force be if the distance between the charges is now 4 m apart?
8 N
If you are asked to find the potential difference, what would you be looking for?
Voltage
Define Transluecent
Only some light passes
A 20 cm tall object has a 40 cm tall virtual image. What is the magnification?
2
What is the ohms law equation?
V= IR
Two charged spheres are separated by a distance of .25 m. Sphere A has a charge of 1.5 x 10 -6 and sphere B has a charge of -1.8 x 10 -6. What is the force between the spheres?
.39 N
The load across a 55.0 V battery consists of a series combination of two lamps with resistances of 125 ohms and 230 ohms.
Find current
.14 A
What is the speed of light (in metric units)
3 x 10^8 m/s
How is a convex lens PHYSICALLY different from a concave lens?
It is thicker in the middle
The current in a circuit is 20 A. If the voltage is 35 V, what is the total resistance?
1.75 ohms
Materials that allow charges to move about easily are called what?
conductors
My dog currently will not allow me to make any more questions because he wants to play fetch. What is my dogs name?
Kimbo
What happens to light as it passes through a medium with a greater index of refraction? (with respect to the normal)
refracted angle bends closer to the normal
Convex Lens
Where would you have to place an object for the image to appear with an identical height?
at 2F
What is the total resistance of a parallel circuit with resistors of 2, .55, and 4 ohms?
.389 ohms
Daily Double!!!
What planet is Padme Amidala trying to save in The Phantom Menace?
Naboo
Electricity is caused by the movement of what?
Electrons