Is it easy or difficult to receive an ‘AAA’ credit rating? How many companies receive a AAA credit rating in 2016 and 2017? (You can google to find the companies)
In: Accounting
The corruption perceptions index (CPI) is a comparative assessment of integrity performance for a variety of countries. What are the trends or similarities between countries with the highest and lowest CPI 2016 scores?
In: Economics
Begin by reviewing the labels for the change in stockholders' equity and then enter the amounts for each situation
|
2017 |
2016 |
|||
|
Total assets |
$ |
80 |
$ |
47 |
|
Total liabilities |
17 |
21 |
In: Accounting
A stock has the following stock information:
|
Year |
Stock Price |
|
2014 |
$ 20.75 |
|
2015 |
$ 21.50 |
|
2016 |
$ 23.75 |
|
2017 |
$ 25.25 |
What is the arithmetic average of this stock?
In: Finance
Since there are so many abuses and dangers on the Internet, should it be regulated and if so by whom? Check out the recent Russian interference in the 2016 election and the recent Facebook debacle.
In: Psychology
A softball is hit over a third baseman’s head with speed v0 and at an angle θ from the horizontal. Immediately after the ball is hit, the third baseman turns around and runs straight back at a constant velocity V = 7.000 m/s, for a time t = 2.000 s. He then catches the ball at the same height at which it left the bat. The third baseman was initially L = 18.00 m from the location where the ball was hit at home plate.
a. Find v0. Use g = 9.807 m/s2 for the magnitude of the acceleration due to gravity.
b. Find the angle θ in degrees.
c. Find a vector expression for the velocity v of the softball 0.1 s before the ball is caught.
d. Find a vector expression for the position r of the softball 0.1 s before the ball is caught.
In: Physics
A rail gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass 50.0 g and electrical resistance 0.300 \Omega rests on parallel horizontal rails that have negligible electric resistance. The rails are a distance L = 7.00 cm apart. The rails are also connected to a voltage source providing a voltage of V = 5.00 V.
The rod is placed in a vertical magnetic field. The rod begins to slide when the field reaches the value B = 0.210 T. Assume that the rod has a slightly flattened bottom so that it slides instead of rolling. Use 9.80 m/s^2 for the magnitude of the acceleration due to gravity.
Find mu_s, the coefficient of static friction between the rod and the rails.
In: Physics
A fluid has velocity components of u=(8t2)m/s and v=(8y+3x)m/s, where x and y are in meters and t is in seconds.
Part A
Determine the magnitude of the velocity of a particle passing through point (1 m, 1 m) when t = 2 s.
V=
Part B
Determine the direction of the velocity of a particle passing through point (1 m, 1 m) when t = 2 s.
θv=
Part C
Determine the magnitude of the acceleration of a particle passing through point (1 m, 1 m) when t = 2 s.
a=
Part D
Determine the direction of the acceleration of a particle passing through point (1 m, 1 m) when t = 2 s.
θa=
In: Advanced Math
. Let T : R n → R m be a linear transformation and A the standard matrix of T. (a) Let BN = {~v1, . . . , ~vr} be a basis for ker(T) (i.e. Null(A)). We extend BN to a basis for R n and denote it by B = {~v1, . . . , ~vr, ~ur+1, . . . , ~un}. Show the set BR = {T( r~u +1), . . . , T( ~un)} is a basis for range(T) (i.e. col(A)). Conclude that dim(col(A)) = n − dim(Null(A)). (b) Show that row(A) = Null(A) ⊥ (i.e. ker(T) ⊥). (c) We have established that for any subspace W of R n (or of any finite dimensional vector space V ), dim(W) + dim(W⊥) = dim(R n ) = n (or dim(W)+dim(W⊥) = dim(V )). Conclude that dim(col(A)) = dim(row(A)).
In: Advanced Math
DATA SHEET
| Titration 1 | Titration 2 | Titration 3 | |
| Mass of KHP, grams | .10 g | .10 g | .10 g |
| Initial volume of NaOH, ml | 0.0 | 6.2 | 12.1 |
| Final volume of NaOH, ml | 6.2 | 12.1 | 17.5 |
CALCULATIONS AND RESULTS
1. number of moles of KHP: n = mass KHP x (1 / 204 g/mol)
n 1 = ______________ n2 =_____________ n3 =___________________
2. number of moles of NaOH = number of moles of KHP
n 1 = __________________ n2 =___________________ n3 =______________________
3. Volume of NaOH used in each titration = final volume of NaOH - initial volume of NaOH
V 1 = _________________ V2 =___________________ V3 =_______________________
4. Molarity of NaOH solution = n/V
M 1 = _________________ M2 =___________________ M3 =______________________
2. Average molarity of NaOH:
M = (M1 + M2 + M3) / 3 = ________________________________________
In: Chemistry