The intensity of an earthquake wave passing through the Earth is measured to be 3.0 X 106 J/m2 s at a distance of 54 km from the source.
(a) What was its intensity when it passed a point only 1.0 km from the source?
(b) At what rate did energy pass through an area of 2.0m2 at 1.0 km?
In: Physics
The intensity of an earthquake wave passing through the Earth is measured to be 3.0 X 106 J/m2 s at a distance of 54 km from the source.
(a) What was its intensity when it passed a point only 1.0 km from the source?
(b) At what rate did energy pass through an area of 2.0m2 at 1.0 km?
In: Physics
Which one of the following describes a portfolio that plots above the security market line?
a. The security's beta must equal 1.0.
b. The security's beta must be greater than 1.0.
c. The security is overvalued in the marketplace.
d. The risk premium of the security is less than expected given the security's beta
e. The security's return is too high.
In: Finance
A voltaic cell employs the following redox reaction:
2Fe3+(aq)+3Mg(s)→2Fe(s)+3Mg2+(aq)
Calculate the cell potential at 25 ∘C under each of the following
conditions
a)[Fe3+]= 1.0×10−3 M ; [Mg2+]= 2.00 M
b)[Fe3+]= 2.00 M ; [Mg2+]= 1.0×10−3 M
In: Chemistry
A Li- (Lithium ion) placed at the location <1.0, -0.4, -0.9> m experiences a force of <0, 2.88e-14, 1.53e-14>N due to a charge Q located at <1.0, 0.35, -0.5> m. What is the electric field which causes this force on the Lithium ion? Answer must be a vector. What is the magnitude and sign of charge Q?
In: Physics
|
Suppose that the S&P 500, with a beta of 1.0, has an expected return of 12% and T-bills provide a risk-free return of 3%. |
| a. |
What would be the expected return and beta of portfolios constructed from these two assets with weights in the S&P 500 of (i) 0; (ii) .25; (iii) .50; (iv) .75; (v) 1.0? (Leave no cells blank - be certain to enter "0" wherever required. Do not round intermediate calculations. Round your answers to 2 decimal places.) |
| Expected return | Beta | ||||||
| (i) | 0 | % | |||||
| (ii) | .25 | % | |||||
| (iii) | .50 | % | |||||
| (iv) | .75 | % | |||||
| (v) | 1.0 | % | |||||
|
please provide the explanation as to how to get this answer? |
|||||||
In: Finance
Consider the titration of 100.0 mL of 0.43 M H3A by 0.43 M KOH for the next three questions. The triprotic acid has Ka1 = 1.0 x 10-4, Ka2 = 1.0 x 10-7, and an unknown value for Ka3.
1) Calculate the pH after 100.0 mL of KOH has been added.
2) Calculate the pH after 150.0 mL of KOH has been added.
3) The pH of the solution after 200.0 mL of KOH has been added is 9.00. Determine the value of Ka3 for this triprotic acid. Use scientific notation to enter this answer, e.g., 1.0 x 10-3 = 1.0E-3.
In: Chemistry
For the reaction below,
A. determine the order of each reactant (3 points)
B. the overall order (1 point)
C. the average rate constant (1 points)
using the method of initial rates.
2A + B +C à D + 2E
|
Experiment |
[A] |
[B] |
[C] |
Initial Rate (M/s) |
|
1 |
1.5 |
0.50 |
2.0 |
5.0 x 10-3 |
|
2 |
0.75 |
0.50 |
1.0 |
2.5 x 10-3 |
|
3 |
0.75 |
0.50 |
2.0 |
5.0 x 10-3 |
|
4 |
1.5 |
1.00 |
1.0 |
2.0 x 10-2 |
|
5 |
1.5 |
0.50 |
1.0 |
2.5 x 10-3 |
In: Chemistry
Stock solutions will be available which are 0.23 M cyclohexanone, 0.5 M H+, and 0.018 M I3–. Mixture B: 1.0 mL H+ (acid) 1.5 mL cyclohexanone For measuring the order with respect to cyclohexanone: Mixture C: .5 mL H+ (acid) 1.0 mL cyclohexanone 1.0 mL distilled water Mixture D: 0.5 mL H+ (acid) 2 mL cyclohexanone You will then add 0.5 mL of I3– solution to each of these mixtures to start the reaction. The total volume of each mixture after the I3– is added will be 3.0 mL. Using this information, determine the initial concentrations of H+, cyclohexanone, and I3– at the start of the reaction for each of these mixtures.
In: Chemistry
1. True or False: A correlation of 1.0 implies a perfect positive correlation.
2. True or False: The fact that two variables are correlated does not mean that one causes the other.
3. True or False: The value of the correlation (r) between X and Y does not change if all values of X are multiplied by 100.
4. True or False: The Covariance between two variables has a range from -1.0 to 1.0.
5. True or False: A correlation of zero means there is no linear relationship between the two variables.
6. True or False: In a bivariate regression (single independent variable) the intercept coefficient is the value of the dependent variable when the independent variable equals zero.
In: Statistics and Probability