Problem based on electric potential
A 1.0 x 10-9 C charge is at the origin, and a -1.00 x 10-9 C charge is 4.1 m to the right on the positive x-axis. The electric potential is -1.4 V at a point on the x-axis that is a distance d to the right of the negative charge. Find d.
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Ceradyne projects its factory rent to be $6,000 in August when 8,600 units are expected to be produced. If rent is a fixed cost, and if production is expected to drop to 7,000 units in September, what is the expected cost of rent in September?
In 2005, the average GPA for students was 3.15. A sample in 2008 showed that the average GPA for students was 3.46. An alternative hypothesis for GPA of students is:
In 1910 Rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil. He unexpectedly observed a few of the particles scattered almost directly backward.
Kenneth change recently started a business. During the first few days of operation, Mr. Chang transferred $30,000 from his personal account into a business account for a company he named Chang enterprise.
The net contents in ounces of canned soup is a random varialbe with probability distribution f(x)= 4(x-11.75) 11.75 <= x <= 12.25 f(x)= 4(12.75-x) 12.25 <= x <= 12.75.
Construct a 90% two-sided confidence interval on mean life in the accelerated test. c) Construct a normal probability plot of the battery life data. What conclusions can you draw?
At a college, a coefficient of correlation of -0.70 was found between the number of high-school activities offered and the number of drug-related suspensions. What percent of the total variation in the drug-related suspensions is explained by the
A hospital needs 1 millicurie of a radioactive pharmaceutical with a half-life of 12 hours. If delivery time takes 3 days, what activity must be shipped to the hospital by the supplier? How many microcuries will remain a week after arrival of the
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