Suppose you are invested in an (excellent) account that pays 50% interest per year, paid monthly. The account is closed to new investment, so you cannot reinvest the interest. Do you prefer this account to one that pays a single payment of 50% at the end of the year, rather than monthly? Why or why not? Explain your reasoning (you may wish to reference ideas like compounding, NPV, IRR, etc.)

 2 NH3 (g)  +   2 H2O (g)   =   2 NO (g)   +   5 H2 (g)

When 12.0 grams of ammonia; 16.0 grams of water; and 20 grams of NO (g) are put into a closed, expandable container kept at 160 ^oC, 1.0 atm, final partial pressure of NO (g) is 20 % greater than the final partial pressure of the hydrogen gas. What is the final volume of the expandable container?

(Answer = 98.1 Liters )

1. When was the latest wave of globalization? What new advances in technology supported this?

1. How can international economic integration (globalization) be measured? Provide information on each method.

1. What does the trade -to-GDP ratio measure? Does a low value indicate that a country is closed to trade with the outside world?

1. What are some of the differences between capital flows today versus the 1900’s? Provide details on at least 2 of these differences.

The counters at a city hall are being modernized. The city hall has 20 counters. Four
workmen have been called in to perform the conversion. Each workman converts 5
counters. During the work, a counter is closed for an average of 3 hours. The duration of
the closing of a counter can be approached using an exponential distribution. What is the
probability for each workman that he/she will be finished with the work within one 8-hour
workday?

For a conservative force F, all if the following are correct except
A. there exists an associated potential energy function.
B. the line integral of F between points A and B by way of point C is independent of point C.
C. the line integral of F around a closed path is zero.
D. the line integral of F with limits A and B is independent of the order of the limits.
E. the force F must be the net force including the internal force.

A rigid reservoir with 3 m3 volume is connected to a supply line.
Initially the valve is closed and the reservoir contains steam at 800 kPa, and x = 0.8 quality.
The valve is opened and steam is allowed until the final pressure is 2.5 MPa and 250 oC.
a- Determine the mass of steam entered to the reservoir.
b- If the pressure is 3.5 MPa and temperature is 350oC at the supply line, evaluate the
transferred heat in kJ, and determine the direction of the heat.

A rigid reservoir with 3 m3 volume is connected to a supply line.

Initially the valve is closed and the reservoir contains steam at 800 kPa, and x = 0.8 quality.

The valve is opened and steam is allowed until the final pressure is 2.5 MPa and 250 C.

a- Determine the mass of steam entered to the reservoir.

b- If the pressure is 3.5 MPa and temperature is 350 C at the supply line, evaluate the transferred heat in kJ, and determine the direction of the heat.

Two large tanks with the same levels of water inside, one is open to the atmosphere while the other is closed and pressurized with an inside pressure of 65 k Pa gage . Water is to be pumped to the pressurized tank by a pump with 85% efficiency, placed in a stainless steel pipe connecting the two tanks at the lowest level. The pipe is 9cm in diameter, 100 m long and the volume flow rate is 0.025 m³/s

• find the power of the pump

A vertical axis cylinder 0.075m² in cross sectional area is open to the atmosphere at one end and closed at the other by a piston which supports a mass of 85 kg. the piston is supported by compressed air. 5.46kJ of heat is transferred to the air and the piston lifts the mass through 55cm. What is the increase in internal energy, U, during the process? Draw the path of the process on a PV diagram.

P_atmos= 1.03 bar Ans=0.75 kJ