Homework Help Classof1: 424 books

"2 identical speakers are driven by the same oscillator @ 200Hz. They are located on a vertical pole and 4.00 m apart. A man walk straight towards the lower speaker perpendicular to the pole. A) How many times he’ll here a min in sound intensity? B) How far from the pole at these moments? Use speed of sound 330m/s and ignore reflection from the ground. "

Find the standard deviation, if µ =400, P (x<396) =.0228 and n=100.

"A freshly prepared solution of α-D-glucose shows a specific rotation of +112∘. Over time, the rotation of this solution decreases and reaches an equilibrium value of +52.5∘. In contrast, a freshly prepared solution of β-D-glucose has a specific rotation of +19∘. The rotation of this...

Suppose the scores, x, on a college entrance examination are normally distributed with a mean of 550 and a standard deviation of 100. A certain prestigious university will consider for admission only those applicants whose scores exceed the 90th percentile of the distribution. Find the minimum score an applicant must achieve in order to receive consideration to the university.

Physiologically describe what happens when you smell something that you like. How the smell recognition happens and when you eat it.  How the taste recognition happen. Physiologically what is the path process it takes for it to happen?

A swimming pool is 20ft wide and 34ft long, 6ft deep at the shallow end and 9ft deep at its deepest point. A cross-section is shown in the figure. If the pool is being filled at a rate of 0.75ft3/min, how fast is the water level rising when the depth at the deepest point is 2ft?

Suppose x is a normally distributed random variable with µ = 10 and σ = 2. Find P (5 ≤ x ≤ 9)

"Among Orthodox Jews, families are expected to be large.  Among Ashkenazim, a segment of the Jewish population, Tay-Sachs disease is [TSD] a relatively common disorder.  TSD is an inherited autosomal recessive disorder, i.e., both parents must be carriers in order that a child inherits...

"The budgeting process for a Midwestern college resulted in expense forecasts for the coming year (in $ millions) of $9, $10, $11, $12, and $13. Because the actual expenses are unknown, the following respective probabilities are assigned: .3, .2, .25, .05, and .2. a.    Show the...

The production function for a product is given by q = KL.  If the price of capital is $10 per day and the price of labor $15 per day, what is the minimum cost of producing 300 units of output?

"Given the following function: a. Find all stationary points b. Identify each stationary point as a local min or local max "

The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57.  Construct a 95% confidence interval for mu, the population mean. a. 11.53 to 18.32 b. 11.01 to 18.85 c. 14.82 to 15.04 d. 10.95 to 18.91

"An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of two emails per hour. Assume the arrival of these emails is approximated by the Poisson distribution. a. What is the probability Linda Lahey, company president, received...

Solving the given algebraic expression, with clear step-by-step solution.