An oscilloscope's seconds/division switch is set on 20 ?s/cm. If the trace is 7.5 cm long, what is the period?
A) 0.0015 s B) 150 ?s C) 1.5 ?s D) 5 ?s
B
You might also like to view...
A group of 78 people enrolled in a weight-loss program that involved adhering to a special diet and to adaily exercise program. After six months, their mean weight loss was 25 pounds, with a sample standard deviation of 9 pounds. A second group of 43 people went on the diet but didn’t exercise. After six months, their mean weight loss was 14 pounds, with a sample standard deviation of 7 pounds. Find a 95% confidence interval for the mean difference between the weight losses.
What will be an ideal response?
Biting lice can serve as an intermediate host for tapeworms
A. True B. False
On a winder stairway, the winder tread width at a point 12" from the narrower end of the winders must be
_____. a. at least 9" b. two-thirds the tread width in the straight portion of the stairway c. 10"-12" d. equal to the tread width in the straight portion of the stairway
When a dimension is enclosed in parentheses, it indicates:
a. Mating dimensions b. Reference dimensions c. Chain dimensions d. Superfluous dimensions e. Local notes