Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. Part A How many beta...

Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. Part A How many beta particles are emitted in 250s by a 2.90mg sample of 60-Co? Part B What is the activity of the sample in Bq?

Suppose a marketing company wants to determine the current proportion of customers who click on ads...

Suppose a marketing company wants to determine the current proportion of customers who click on ads on their smartphones. It was estimated that the current proportion of customers who click on ads on their smartphones is 0.65. How many customers should the company survey in order to be 94% confident that the margin of error is 0.22 for the confidence interval of true proportion of customers who click on ads on their smartphones? Answer: (Round up your answer to nearest...

24. Which one of the following stocks is correctly priced if the risk-free rate of return...

24. Which one of the following stocks is correctly priced if the risk-free rate of return is 2.4 percent and the market risk premium is 7.70 percent? Stock Beta Expected Return A 0.74 8.60% B 1.49 13.90% C 1.39 13.10% D 1.06 10.57% E 0.98 9.90% Stock A Stock B Stock C Stock D Stock E

9 the following are true/false 4)When the IRR serves as the discount rate, the net present...

9 the following are true/false 4)When the IRR serves as the discount rate, the net present value =$0 14) The first step when solving for the modified IRR (MIRR) is to calculate the present value of the cash inflows. 16) It is not fair to say that all capital budgeting methods have an accept-reject criterion. 17) a project costing $1000 and returning $450 annually for three will have a npv> $0 if the discount rate is =15% 18) If the...

At each of the four corners of a square with side length a, there is a...

At each of the four corners of a square with side length a, there is a charge +q. How many other charges are exerting electric forces on the charge at the lower-right corner? The square is placed so that its sides are either parallel or perpendicular to the x-axis.

1)The body temperature of a particular species of fish in a pond was measured and was...

1)The body temperature of a particular species of fish in a pond was measured and was found to correlate with the temperature of the pond, ranging from 4 degrees C in winter to 24 degrees C in summer. Remarkably, the metabolic rate of the fish remained virtually constant between these extreme temperatures. This trait exhibited by the fish is an example of 2)Loop diuretics are a class of medications used in the treatment of congestive heart failure and chronic kidney...

Suppose you observe your friend (mass 67.2 kg) stand at the very edge of a motionless...

Suppose you observe your friend (mass 67.2 kg) stand at the very edge of a motionless merry-go-round (modelled as a thin disk with moment of inertia 6.1 kg m 2). At some point, your friend walks around and along the edge at a speed 1.5 m/s perfectly tangent to the edge at all times, relative to the merry-go-round’s surface. Take the radius of the merry-go-round to be 1.2 m. (a) Calculate the speed (in m/s) of your friend relative to...

As an officer of the WHO, what programs would you fund if you wished to make...

As an officer of the WHO, what programs would you fund if you wished to make the largest impact on health, given a budget allocation of $100 million.   Note: you don’t have to give an expense report for the 100 million, but rather how would you go about deciding what to do

explain why n2 2+ is diamagnetic, while O2 4+, which has the same number of valence...

explain why n2 2+ is diamagnetic, while O2 4+, which has the same number of valence electrons is paramagnetic?

For this question, assume that expectations of productivity are slow to adjust. Further assume that A...

For this question, assume that expectations of productivity are slow to adjust. Further assume that A had been increasing by 2% a year. Now suppose that A increases by 5% in period t. This increase in productivity growth will cause (a) the real wage to rise and no change in the natural rate of unemployment. (b) the WS relation to shift up more than the PS relation. (c) the natural rate of unemployment to fall. (d) the real wage to...

Which accounts might be misstated on a consolidated financial statement level and why, when an intergroup...

Which accounts might be misstated on a consolidated financial statement level and why, when an intergroup transaction consisted of a sale of inventory?

Explain why people sometimes choose to purchase "load" vs. "no-load" funds

Explain why people sometimes choose to purchase "load" vs. "no-load" funds

what percent of data is not contained within 2.4 standard deviations about mean for a normal...

what percent of data is not contained within 2.4 standard deviations about mean for a normal distribution?

2. Van has $500 each semester to spend on books and sandwiches. Books are $100 each...

2. Van has $500 each semester to spend on books and sandwiches. Books are $100 each and sandwiches are $5 each. She has purchased 3 books this semester and 40 sandwiches. She tells you that her marginal utility from the next book is about 100 utils and the marginal utility from the next sandwich is about 15 utils. Has Van successfully maximized her utility this semester? How should she adjust her spending next semester?

a)   A bullet of mass 0.25 kg travels at a speed of 180 ms-1 and deeply...

a)   A bullet of mass 0.25 kg travels at a speed of 180 ms-1 and deeply penetrates into a fixed target object. It brings to rest in 0.14 s. Find i)   the distance of penetration of the target object, ii)   the magnitude of the average retarding force exerted on the bullet. b)   If a kid on an amusement rides moves at a constant speed in a horizontal circle of diameter 10.0 m, i) making a complete circle (one complete revolution)...

McCarthy Enterprises had average operating assets of $100,000, its return on investment is 20%, and its...

McCarthy Enterprises had average operating assets of $100,000, its return on investment is 20%, and its minimum required rate of return on investments is 16%. What is its residual income for the year?

at the beginning of financial year 20X1, beta trading co purchases an equipment for the acquistion...

at the beginning of financial year 20X1, beta trading co purchases an equipment for the acquistion cost of 30,000 RON, VAT 19%. The equipment is used over 6 years and straight line depreciation method is applied. the annual depreciation and the value of equipment disclosed in the balance sheet at the end of financial year 20X1 are the following: 6,000 RON / year and 30,000 RON 5,000 RON / year and 20,000 RON 6,000 RON / year and 18,000 RON...

Set up the definite integral(s) that represents the area between the curves y = x2 -...

Set up the definite integral(s) that represents the area between the curves y = x2 - 6 and y = x

Billy consumed the following foods at lunch: A hamburger with lettuce, tomato, and catsup on a...

Billy consumed the following foods at lunch: A hamburger with lettuce, tomato, and catsup on a bun; broccoli salad, potato chips, and a glass of iced tea. Later that afternoon Billy began to experience intestinal gas. Which food was most likely responsible for the gas production?​ a. Iced tea b. ​Hamburger meat c. ​Potato chips d. Tomato e. ​Broccoli salad

What are the differences between LIBOR (London Inter Bank Offered Rate) and SOFR (Secured Overnight Financing...

What are the differences between LIBOR (London Inter Bank Offered Rate) and SOFR (Secured Overnight Financing Rate) ? Why SOFR is safer and more preffered one ?