1. Homework Statement
As the title would lead you to believe I have to classify each solid as a covalent, ionic, metallic, or molecular solid.
These are the given solids
Calcium Fluoride
Rhombic Sulfur
Frozen Ethanol
Pure Calcium
2. Homework Equations
n / a
3. The...
1. Homework Statement
I have to find whether the following is Convergent or Divergent
∑ from n = 1 to infinity
2 / n(2n + 2)^(1/4)
Actually it's the fourth root, this is just easier to write.
2. Homework Equations
According to the front of the sheet it's a quiz on P-Series and Integral...
1. Homework Statement
Create a class called, ThreeObjectAnimation, that creates a graphic animation with three animation object. The ThreeObjectAnimation class should move three objects around the frame, either randomly, or following a fixed pattern. The movements should occur every 250...
1. Homework Statement
For the circuit in the diagram below, R1 = 34.0 Ω, R2 = 20.0 Ω, ε1 = 8.50 V, ε2 = 10.5 V and ε3 = 10.5 V are connected as shown in the figure.
http://loncapa.physics.mun.ca/res/mun/cdeacon/capalibrary/Graphics/Gtype1021/A5Problem30.gif
What is the value of current I1...
1. Homework Statement
10.11g of CaO (molar mass = 56.08 g / mol) is dropped into a styrofoam coffee cup containing 157.0 g of H2O at 25.0ºC. If the following reaction occurs, calculate the final temperature of the water assuming that the cup acts as a perfect insulator.
(Assume that the...
Not to worry, i got the answer. I was using the wrong equation.
For values of Magnetic Field inside the given radius the equation is
B = µIr / 2πa^2
B = (4π x 10^-7)(2.17)(0.01245) / 2π(0.0249^2)
B = 8.71e-6 T
In case anyone else had the same or similar problems.
1. Homework Statement
A cylindrical conductor of radius R = 2.49 cm carries a current of I = 2.17 A along its length; this current is uniformly distributed throughout the cross-section of the conductor. Calculate the magnetic field midway along the radius of the wire (that is, at r = R/2)...
1. Homework Statement
There should be lines of some values to imply the "Not" form of them, however to make it easier, i'll just use the ¬ Symbol
(a) Let x, y be elements of a Boolean algebra. Prove from the axioms that (x · y) + x = x.
(b) Prove from the axioms of Boolean algebra that...
1. Homework Statement
The neutral neptunium atom has 93 electrons.
What is the magnitude of its electric field at a distance of 6.5x10-10 m from the nucleus?
Hint: The number of protons in a nucleus is equal to the number of electrons in the neutral atom.
q = 1.6e-19 * 93 =...
I'm assuming that the 3 and the 2 that you're using are the charges? Then why not add the Negative to the two? or is it irrelevant in this case
E3 = 3/(x)^2
E2 = 2/(x-d)^2
3.17 / x2 = 2.19 / (x - d)2
√(2.19 / 3.17) = (x - d) / x
√(2.19 / 3.17) = (1) - (d / x)
0.8311 = 1 - (d / x)...
I mean, after doing Quadratic i ended up with two values, both where larger than 3.65 cm. That's what i mean when i said i have two points.
It's to the right because we the field is going to the right. We were taught that you always imagine what a proton would do should it enter the field...
1. Homework Statement
A 3.17 μC and a -2.19 μC charge are placed 3.65 cm apart. At what point along the line joining them is the electric field zero? Assume that the first charge is at the origin and the second charge is at +3.65 cm.
2. Homework Equations
E = K(q) / r2
Ep = E1 + E2
0 =...
Gauss's Law = EA
= (142) * (4πr2)
= (142) * (4π(6,378,100)2)
= (142) * (5.11e+14)
= 7.26e+16 C
θ = 180° for each ∆A => -1
(Basically means it's negative since electric field and ∆A are in complete opposite directions So Electric Field then is just a negative)
Gauss's Law = q / E0
q = (-E * A...
1. Homework Statement
The Earth is surrounded by an electric field, pointing inward at every point. Assume a magnitude of E = 142N/C near the surface.
a) What is the net charge on the Earth?
b) How many excess electrons per square meter on the Earth's surface does this correspond to...
1. Homework Statement
(a) Give a resolution refutation of the following formula:
(x ∨ y) ∧ (y ∨ ¬z ∨ ¬x) ∧ ¬x ∧ (¬y ∨ x)
(b) Convert the formula into CNF and give a resolution refutation for it:
x1 ∧ (x1 ↔ x2) ∧ (x2 ↔ x3) ∧ (x3 →¬ x1)
2. Homework Equations
n/a
3. The...
Re: Simple Logic Question of Converting "or" to "and"
But it simple terms of symbols like "∧ and" "¬ not." What would be an equivalent for "or?" The Question i was given is.
Rewrite the following formula using only ¬ and ∧ (that is, write an equivalent formula which does not have ∨,→,↔)...
Simple Logic Question of Converting "or" to "and"
1. Homework Statement
As the title would have you believe it's really just a basic question.
I have to write (¬q <---> r) /\ (¬p \/ ¬r) ---> (p \/ ¬q) just using "¬'s" and "/\'s" i know how to change everything else, but i cannot, for the life...
1. Homework Statement
At a distance of 45 meters from a traffic light, a car traveling 15 m/s is brought to a stop at a constant deceleration
a) What is the value of Deceleration (-5m/s)
b) How far has the car moved when its speed has been reduced to 3 m/s
c) How many seconds would the...
1. Homework Statement
Simplify the following compound statements (give a smallest formula equivalent to each of them). State which logical identities you used at each step
(a) (p→q)↔(q→p)
(b) ¬(p∧q)→(q→(p∨q))
2. Homework Equations
n/a
3. The Attempt at a Solution
(a)
( p...