Charged Particles
Things That Begin With "c"
Electric Fields
Grab Bag
General Science
100
X, Y and Z are charged metal spheres. X repels Y, but attracts Z. If it is known that Y is positively charged, what is true about the charges on X and Z?
X is positive, Z is negative
100
What is the unit for charge?
Coulomb
100
In general, what direction does an E field point in?
away from positive, towards negative
100
How many Super Bowls have the Philadelphia Eagles won?
one
100
What are the products of photosynthesis?
glucose (sugar), oxygen, and water
200
If a positively charged rod was held close to the top of an electroscope, the leaves would spread apart due to an excess of what type of charge in the leaves?
positive
200
When an object of this type is charged, the excess charge becomes evenly distributed across its surface.
conductor
200
The magnitude of electric field experienced by a charge at a certain distance from a source charge is equal to 64 N/C. What will be the magnitude of the electric field at four times that distance and with a source charge half as strong?
2 N/C
200
A wheel of mass M and radius R rolls on a level surface without slipping. If the angular velocity of the wheel is ω, what is its linear momentum?
MωR
200
List the layers of Earth from innermost to outermost.
inner core, outer core, mantle, crust
300
Three charges are located at the corners of an equilateral triangle. Q1=Q2=+q, and Q3=-2q. Describe the direction of the force on Q3 by Q1 and Q2.
pointing directly in between Q1 and Q2
300
When one particle is orbiting another, the electrostatic force between them is acting as this type of force.
centripetal
300
A tiny ball (mass = 0.012 kg) carries a charge of –18 µC. What electric field (magnitude) is needed to cause the ball to float above the ground?
6.5 x 10^3 N/C
300

Where were the 2018 Winter Olympics being held?

Pyeongchang, South Korea

300
How many bones are in an adult human skeleton?
206
400
Two spheres, one with a charge of -Q and the other with a charge of +2Q are separated by a distance R and exert a force F on each other. The spheres are now altered so that the force between them is 2F. What are TWO scenarios that could have produced this result?
double one of the charges, halve one of the charges and halve R, or divide R by sqrt(2)
400
When this element is an ion, it has a charge of +2.
calcium
400
Two charges are placed on the x axis. One charge (q1 = +8.5 µC) is at x1 = +3.0 cm and the other (q2 = -21 µC) is at x2 = +9.0 cm. Find the net electric field (magnitude and direction) at x = +6.0 cm.
2.9 x 10^8 N/C to the right
400
A projectile is fired from the surface of the Earth with a speed of 200 meters per second at an angle of 30° above the horizontal. If the ground is level, what is the maximum height reached by the projectile?
500 m.
400
What is the most efficient form of renewable energy?
wind energy
500
If one sphere has a mass of 2 kg and an electric charge of +4 μC while another sphere, 3 meters away, has a mass of 1 kg and an electric charge of +5 μC, what is the acceleration of the more massive sphere?
0.01 m/s^2
500
The energy needed to raise the temperature of 1 gram of water through 1 °C.
calorie
500
What is the electric field inside a hollow conductive sphere with a radius of R and a charge of +3Q?
0 N/C!!!!
500
When did Rindge Technical School and Cambridge High and Latin School merge to form CRLS?
1977
500
How many different models of iPhone have been released?
18
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