It is claimed the average age of employee in a large company is 50. A sample of 36 employees is taken and the average age was 49. The standard deviation of the population was 5. Use a level of significance of .05. What do you think of this claim?
There are 8 standard classifications of blood type. An examination for prospective laboratory technicians consists of having each candidate determine the type for 3 blood samples. How many different examinations can be given of no 2 of the samples provided for the candidate ha...
Given f(x) = 2 cos[3(x - 60)]+4. Graph one complete cycle of the above function when -180<x<180.
How many liters of hydrogen needs to be reacted with chlorine to produce 21g of hydrochloric acid, at STP?
The third term of a geometric series is 24 and the fourth term is 36. Determine the first term and common ratio.
A material that remains highly magnetized after a magnetization cycle has a large hysteresis area. Answer True False
In a magnetization cycle, a large hysteresis loop indicates ____. Answer the material is nonmagnetic a large amount of energy loss due to heating the size of the material is large the material will not remain well magnetized
The flux through a window whose surface is parallel to magnetic field lines is zero. Answer True False
A proton is traveling horizontally at 5.4 × 106 m/s in a direction 45o north of west. A magnetic flux density has a magnitude of 0.25 T and is directed north. What is the force on the proton? Answer 1.5 × 10-13 N, up 2.1 × 10-13 N, down 1.5 × 10-13 N, d...