Questions
Currents in dc transmissionlines can be 100 A or higher. Some people are concerned that...
Currents in dc transmission lines can be 100 A or higher. Some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers.
Part A
For a line that has current \(180 \mathrm{~A}\) and a height of \(8.0 \mathrm{~m}\) above the ground, what magnetic field does the line produce at ground level? Express your answer in teslas.
Part B
What magnetic field does the line produce at ground level as a percent of the earth's magnetic field, which is \(0.50 \mathrm{G}\).
Express your answer using two significant figures.
Part C
Is this value of magnetic field cause for worry?
No. Since this field is much smaller than the earth's magnetic field, it would be expected to have less effect than the earth's field.
Yes. Since this field is does not differ a lot from the earth's magnetic field, it would be expected to have almost the same effect as the earth's field. No. Since this field is does not differ a lot from the earth's magnetic field, it would be expected to have almost the same effect as the earth's field. Yes. Since this field is much greater than the earth's magnetic field, it would be expected to have more effect than the earth's field.
No. Since this field is does not differ a lot from the earth's magnetic field, it would be expected to have almost the same effect as the earth's field.
Yes. Since this field is much greater than the earth's magnetic field, it would be expected to have more effect than the earth's field.
In: Physics
Suppose that in a random selection of 100 colored candies, 30% of them are blue. The...
Suppose that in a random selection of 100 colored candies, 30% of them are blue. The candy company claims that the percentage of blue candies is equal to 28%. Use a 0.10 significance level to test that claim.
Identify the test statistic for this hypothesis test.
Identify the P-value for this hypothesis test.
In: Math
If the rate of discount is 20 percent, a. Would you ratherreceive $100 today or...
If the rate of discount is 20 percent,
a. Would you rather receive $100 today or $120 in one year?
b. Would you rather receive $205 today or $240 in one year?
c. Would you rather receive $500 in one year or $610 in two years?
In: Finance
Daily sales at a store is a random variable, with values of $100, 300, 500, and...
Daily sales at a store is a random variable, with values of $100, 300, 500, and 800 with probabilities 0.2, 0.2, 0.5, and 0.1 respectively. What is the expected value of sales?
In: Finance
You invest $100 in a risky asset with an expected rate of return of 0.13 and...
You invest $100 in a risky asset with an expected rate of return
of 0.13 and a standard deviation of 0.11 and a T-bill with a rate
of return of 0.03.
The slope of the capital allocation line formed with the risky
asset and the risk-free asset is equal to
In: Finance
1. If you receive $100 in the 2nd year and $250 in the 4th year at...
1. If you receive $100 in the 2nd year and $250 in the 4th year at an interest rate of 5.5%, what is the total PV of these lump sums? ANSWER: $291.65
2. What is the PV of an investment that yields $500 to be received in 5 years and $1000 to be received in 10 years at an interest rate of 4%? ANSWER: $1086.53
(Can someone please show me how you solve this, with the steps. Also how to calculate/input it onto excel. Thank you so much! ( :
In: Finance
Suppose that a two-year bond with a principal of $100 provides coupons at the rate of...
Suppose that a two-year bond with a principal of $100 provides coupons at the rate of 6% per annum semiannually. Suppose that the zero-rates are
| Maturity (years) | Zero Rate (%) |
| 0.5 | 5.0 |
| 1.0 | 5.8 |
| 1.5 | 6.4 |
| 2.0 | 6.8 |
What is the bond's yield to maturity expressed with the continuous compounding?
- please use the formulas and explain step by step
In: Finance
Company A has an annual income of $100 million and net profit is %20 , and...
In: Finance
A young executive deposits $100 at the end of each month for 5 years into an...
A young executive deposits $100 at the end of each month for 5 years into an account that earns 6% compounded monthly. How much is in the account after the 5 years? (Round your answer to the nearest cent).
$
The executive then changes the deposits in order to have a total of $400,000 after 25 total years. What should be the revised monthly payment in order to meet the $400,000 goal? (Round your answer to the nearest cent).
$
How much interest is earned during the 25 years?
$
In: Finance
Assume that autonomous consumption = 100, and the marginal propensity to consume = 80%. At what...
Assume that autonomous consumption = 100, and
the marginal propensity to consume = 80%.
At what level of
disposable income will savings = 0?
6. If actual investment is higher than planned
investment, what is happening to business
inventories?
Inventories
are growing
Inventories
are shrinking
Inventories
are holding steady
It
depends upon where we are in the busienss cycle
In: Economics