12. If a Hall voltage of 2.50 x 10^-3V is produced by a 0.300-T field applied across a 1.50-cm-diameter aorta, what is the blood velocity inside?
14. A solenoid has 300 turns and a length of 10.0 cm. When a current of 2.50 A flows through the solenoid, how strong is the magnetic field produced inside it?
15. In a mirror's ray diagram, the distance between the object and the image is 30 cm. The magnification of the image is -0.3. What type of mirror is used and what is the focal length of the mirror?
In: Physics
A square conducting loop of side length a = 24 cm sits in three-dimensional space, such that its area vector points along the vector -i - 4j + k.
A uniform magnetic field of strength B = 0.04 mT points along the positive z-axis.
A current of I = 0.3 mA is run through the loop. Find the net force on the loop.
Find the torque on the loop. (Note it should be of the form (Tx , Ty , Tz) with appropriate numbers)
What is the magnetic dipole moment of the current loop?
In: Physics
The reliability of a particular skin test for tuberculosis (TB) is as follows: the sensitivity of the test is 0.9 (the test comes back positive 90% of the time if the subject has TB) and the specificity of the test is 0.95 (if the subject does not have TB, the test comes back negative 95% of the time). In a large population, only 0.3% (0.003) of the people have TB. A person is selected at random and given the test, which comes back positive.
a) create a hypothetical 100,000 table to answer question b.
b) What is the probability that that person actually has TB?
In: Statistics and Probability
You are analysing four different stocks. The expected market return is 10% with a standard deviation of 20%. The risk free-rate is 2%. Assume the Capital Asset Pricing Model (CAPM) holds and you base your conclusion completely on CAPM. Indicate in the table below which of the following securities is underpriced, overpriced or correctly priced.
|
Security |
Expected Return |
Standard Deviation |
Beta |
Price? |
|
Omega |
16% |
25% |
1.5 |
|
|
Psi |
5% |
3% |
0.5 |
|
|
Chi |
10% |
17% |
1.2 |
|
|
Phi |
6% |
4% |
0.3 |
In: Finance
A Unity feedback system has an open loop transfer function of
G(s) = K / s (s+1) (s+5)
Draw the root locus plot and determine the value of K to give a damping ratio of 0.3 A network having a transfer function of 10(1 +10s) /(1 +100s) is now introduced in tandem. Find the new value of K, which gives the same damping ratio for the closed -loop response. Compare the velocity error constant and settling time of the original and the compensated systems
In: Electrical Engineering
In: Statistics and Probability
Medical marijuana is a controversial subject that appears in the news on a regular basis. Should it be legalized for medical purposes, for any purpose (like in Colorado), or should the new strain of Cannabis (Charlotte’s Web), which has less than 0.3% THC (this is the chemical that creates the high) be used instead? The formal paper for this class will discuss the two types of marijuana and whether either one should be legalized for medical purposes or legalized for general purposes. Meet the page of 3-4 pages
I will give you a like and a comment
In: Nursing
3. A random sample of wolf dens in the southwestern United States is taken. The number of pups found are:
5 8 7 5 3 4 3 9 5 8 5 6 5 6 4 7
a. Find a 90% confidence interval for the population mean number
of wolf pups per den. Include the sample statistics, degrees of
freedom, LaTeX: t_{\frac{\alpha}{2}}t α 2 , standard error and a
sentence.
b. What sample size is needed for the margin of error to be 0.3?
In: Statistics and Probability
A pension fund manager is considering three assets. The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill yielding 0.06. The probability distribution of the risky funds is as follows:
| Expected ret. | std. dev. | |
| Stock fund | 0.18 | 0.3 |
| Bond fund | 0.12 | 0.14 |
The correlation between the fund returns is 0.2.
What is the expected return of the optimal risky portfolio?
Round your answer to 4 decimal places. For example if your answer is 3.205%, then please write down 0.0321.
In: Finance
Caro Manufacturing has two production departments, Machining and Assembly, and two service departments, Maintenance and Cafeteria. Direct costs for each department and the proportion of service costs used by the various departments for the month of August follow:
| Proportion of Services Used by | |||||||||||
| Department | Direct Costs | Maintenance | Cafeteria | Machining | Assembly | ||||||
| Machining | $ | 120,000 | |||||||||
| Assembly | 74,000 | ||||||||||
| Maintenance | 53,000 | — | 0.3 | 0.5 | 0.2 | ||||||
| Cafeteria | 40,000 | 0.6 | — | 0.2 | 0.2 | ||||||
Required:
Use the reciprocal method to allocate the service costs. (Matrix algebra is not required.)
In: Accounting