Answer the following statement(s) true (T) or false (F)
1. Density is a fundamental dimension.
2. The specific gravity is unitless
3. Specific weight is a fundamental dimension.
4. Mass flow rate is a fundamental dimension.
1. False
2. True
3. False
4. False
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Application to mobile computer networks. Computer scientists often model the movement of a mobile computer as a random path within a rectangle. That is, two points are chosen at random within the rectangle, and the computer moves on a straight line from the first point to the second. In the study of mobile computer networks, it is important to know the mean length of a path. It is very difficult to compute this mean directly, but it is easy to estimate it with a simulation. If the endpoints of a path are denoted src="https://sciemce.com/media/4/4bd592e55d9472ab7a.jpg" class="w-image" /> , for many paths, computing the length of each, and taking the mean. This exercise presents a simulation experiment that is designed to estimate the mean distance between two points randomly chosen within a square of side 1.
, then the length of the path is 
. The mean length is estimated by generating endpoints
a. Generate 1000 sets of endpoints 
. Use the uniform distribution with minimum value 0 and maximum value 1 for each coordinate of each point. The uniform distribution generates values that are equally likely to come from any part of the interval (0, 1).
b. Compute the 1000 path lengths 
.
c. Compute the sample mean path length 
. The true mean, to six significant digits, is 0.521405. How close did you come?
d. Estimate the probability that a path is more than 1 unit long.
Technician A says some 4WD vehicles use a solid front axle. Technician B says some 4WD vehicles use halfshafts to send torque to the front wheels. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Which is mixed with fuel in the burner prior to combustion?
A) Oxygen B) Primary air C) Superheated air D) Propane
This is the horizontal step of the stairs:
A. rise B. run C. stairwell D. riser E. tread