Engineering Answers

A golfer practices different parts of their game for hours. Specifically, the golfer practices: (1) putting, (2) their short game, and (3) their iron game. The amount of time spent on each part of their game is exponentially distributed. If the golfer is practicing their putting, they will always switch to their short game after an average of 30 minutes. When the golfer practices their short game, they do so for an average of 45 minutes, and then switches to putting with probability 0.6 or to their iron game with probability 0.4. When they practice their iron game, they do so for an average of 60 minutes. After practicing their iron game, the golfer will switch to putting or to their short game with equal probability.

A balanced-flow ERV is used to ventilate a warehouse at a rate of 1,000 L/s. The air conditions within the warehouse are quite cool and dry, Tab = 10°C and RH = 50%. At a particular moment, the outside air enters the ERV at Tab = 38°C and RH = 40%. During this time, the air conditions leaving the ERV on the exhaust side are measured to be Tab= 31°C and RH = 35%.

A box girder 12 ft long is given the section shown. Determine the maximum deflection if it is supported on a simple support and exposed to a transverse load of 380 Lbf/ft uniformly distributed in the direction shown. A-36 steel. Determine the factor of safety.

20 in

Ang Esquinas 3 X 3 X 3/8 in

Ang Refuerzo 1 1/2X1 1/2 X 1/4 in

Tee 11/2X2X1/4 in

Placa 1/4 in

HI 12 in

6 in

6 in 1

Python a program that allocates 10 points in a list of MyPoint, initializes to (1, 1), (2, 

2), ... (10, 10), and print all the points.

Hints: You need to create an empty list and append each of the 10 MyPoint

instances.

points = []

for I in range(1,11):

 points.append(MyPoint(i,i))

1. # use a loop to print all the points

Determine a real root accurate to four decimal places of the following equation by using (i) Bisection Method

x³+3X²-1=0 interval (-3, -2)

1 kg of fluidis compressed reversible according to law pv=25, where p is in bar and v is in m^3/kg. The final volume is 1/4 of the initial volume. Calculate the work done on the fluid , and sketch the p-v diagram

 A cone of base diameter 40 mm and height 50 mm is resting centrally on the top of square frustum whose smaller base is 40 mm, larger base is 50 mm and height 60 mm. The square base frustum is resting on its smaller base. Draw an isometric view of the solids.

Calculate and plot the percent bandwidth for a 𝑁𝑁=1-section binomial matching transformer versus 𝑍𝑍𝐿𝐿𝑍𝑍0􀵗=1.5 to 6 for 𝛤𝛤𝑚𝑚=0.2. (Show all calculated values and plot labels)

Pipes 1,2,3 and 4 have lengths of 300m, 240m, 210m and 450m all being new cast iron. Pipes 2 and 3 are laid in parallel both drawing from 1 and discharging into 4. If 1,2 and 4 have diameters of 200mm, 150mm and 250mm, respectively, determine the diameter of 3 when the discharge through the system is 45 liters/sec under a total head loss of 8m. Assume f=0.02.

A cylindrical tank with its axis vertical has a diameter of 2m and a depth of 8m. A standard sharp-edged orifice 100mm in diameter is located in the side 1m above the bottom. When at rest, water stands to a depth of 5m. Assuming that the volume of water in the tank is kept constant. Determine the rate of discharge from the orifice when the tank has a constant velocity of 3m/s in a direction opposite to that of the jet.