Two 20.0-g ice cubes at –15.0 °C are placed into 265 g of water at 25.0...

Two 20.0-g ice cubes at –15.0 °C are placed into 265 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature, Tf, of the water after all the ice melts.

Explain why a dwarf nova system must have undergone a common envelope prior to becoming a...

Explain why a dwarf nova system must have undergone a common envelope prior to becoming a dwarf nova. Also explain what happened during the common envelope phase.

6. For each reaction listed, determine its standard cell potential at 250C and whether the reaction...

6. For each reaction listed, determine its standard cell potential at 250C and whether the reaction is spontaneous at standard conditions. You will need to use Appendix L. (a) Mg(s) + Ni2+(aq) ---> Mg2+(aq) + Ni(s) (b) 3Fe2+(aq) + Au3+(aq) ---> 3Fe3+(aq) + Au(s) (c) Cu(s) l Cu2+(aq) II Au3+(aq) I Au(s) 7. Determine the standard free energy change (DG0) in kJ for the reactions in question 6. (a) (b) (c)

Felice bought a duplex apartment at a cost of $150,000. Her mortgage payments on the property...

Felice bought a duplex apartment at a cost of $150,000. Her mortgage payments on the property are $940 per month. Her real estate taxes total $1,440 per year, and insurance costs $900 per year. She estimates that she will spend $1,000 each year per apartment for maintenance, replacing appliances, and other costs. The tenants will pay for all utilities. Ignore income taxes, changes in equity value, and changes in property value. What monthly rent must she charge for each apartment...

find f"(x) for f(x) = 1 -2x / 4x+5

find f"(x) for f(x) = 1 -2x / 4x+5

The half-life of 131I is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the...

The half-life of 131I is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the decay constant for this isotope. (c) Convert 0.500 mCi to the SI unit the becquerel. (d) Find the number of 131I nuclei necessary to produce a sample with an activity of 0.500 mCi. (e) Suppose the activity of a certain 131I sample is 6.40 mCi at a given time. Find the number of half-lives the sample goes through in 40.2 d and the activity...

On March 1, 2014, Munsey Corporation issued $1,200,000 of 6 percent, fiveyear bonds. The semiannual interest...

On March 1, 2014, Munsey Corporation issued $1,200,000 of 6 percent, fiveyear bonds. The semiannual interest payment dates are February 28 and August 31. Because the market rate for similar investments was 7 percent, the bonds had to be issued at a discount. The discount on the issuance of the bonds was $49,900. The company’s fiscal year ends February 28. Prepare the journal entries to record the bond issue on March 1, 2014, the payment of interest, and the amortization...

What are six of the occupations that are involved in this sector of the economy? That...

What are six of the occupations that are involved in this sector of the economy? That is, when there is a 20% drop in this activity, residential construction and sales volume, which workers lose their jobs? Why?

A projectile is shot from the edge of a cliff a 125m above ground level with...

A projectile is shot from the edge of a cliff a 125m above ground level with an initial speed of 65m/s at an angle of 37o below the horizontal. Find the y-component of the VELOCITY just before it reaches the bottom of the cliff Find the magnitude and angle of the displacement for the entire trip from cliff to the ground

Assume that investors have recently become more risk averse (less risk tolerant), so the market risk...

Assume that investors have recently become more risk averse (less risk tolerant), so the market risk premium (rm - rRF) has increased. Also, assume that the risk-free rate and expected inflation have not changed. Which of the following is most likely to occur?

Suppose you walk in a direction of 40◦ North of East for a distance of 5...

Suppose you walk in a direction of 40◦ North of East for a distance of 5 m, then walk in a direction of 25◦ South of West for a distance of 10 m, then walk due East for a distance of 6 m. Find the distance and direction of your final location with respect to your starting point

For a Brazilian firm, the process of exporting to international markets may include all of the...

For a Brazilian firm, the process of exporting to international markets may include all of the following except A.export-import agent. B.draft. C.bill of lading. D.import tariff. E.letter of credit.

When you release the end of a full and untied balloon, what happens? Justify your answer...

When you release the end of a full and untied balloon, what happens? Justify your answer with what you know about the physics of explosions? How does this relate to rockets?

Suppose you have two identical specimens A and B (They are made of the same material...

Suppose you have two identical specimens A and B (They are made of the same material and they have the same shape). When A is stretched with 200 MPa and B is compressed with 200 MPa along [111] direction. (?y= 250 MPa, ? = 0.3). (Hint: The answer could be A>B, A(?y= 250 MPa, ? = 0.3). (Hint: The answer could be A>B, A<B, A=B, or INCONCLUSIVE) Compare; a) Absolute value of volume change b) Density c) Volume d) The...

The following data counts the number of letters in a person’s full name, including middle initials....

The following data counts the number of letters in a person’s full name, including middle initials. For example, my full name is “Lily Y Lum”, so my name has 8 letters (length is 8). I have surveyed 11 CCSF students. Include your own name to make a dataset having 12 values. Write your full name: __________________ Length (number of letters): ________ 15, 22, 17, 9, 11, 16, 18, 13, 25, 17, 24, __length of your name__ (a). Construct the 97%...

If the marginal cost of production of a good is a positively sloped function of the...

If the marginal cost of production of a good is a positively sloped function of the quantity supplied to the market and the price of the good is a negatively sloped function of the quantity demanded, In a monopoly market price there will always be a dead-weight loss compared to the result of a competitive market. In a competitive market, the long-run equilibrium quantity supplied and demanded will be the quantity at which long run marginal cost and price are...

Bilal Gupta has the following accounts with an investment dealer whose accounts are insured under CIPF:...

Bilal Gupta has the following accounts with an investment dealer whose accounts are insured under CIPF: • $1,250,000 Canadian dollar trading account • $500,000 US dollar trading account • $750,000 Canadian dollar option account • $250,000 RRSP account The investment dealer declares bankruptcy. The market value of its accounts is $2 billion and the amount available for distribution is $1.8 billion. How much would Mr. Gupta receive from CIPF? a $0 B $ 275,000 c $ 750,000 d $1,000,000

Why are the quarks and leptons in the first column stable but the second are not?

Why are the quarks and leptons in the first column stable but the second are not?

A small aircraft of mass 1200 kg is cruising at 250 km/h at an altitude of...

A small aircraft of mass 1200 kg is cruising at 250 km/h at an altitude of 2000 m. (i) What is the gravitational potential energy (relative to the ground), and what is the kinetic energy of the aircraft? (ii) If the pilot puts the aircraft into a dive, what will be the gravitational potential energy, what will be the kinetic energy, and what will be the speed when the aircraft reaches an altitude of 1500 m? Assume that the engine...

Question 19 Table: Monetary Aggregates (in billions) Currency in circulation $ 100 Checkable deposits $ 300...

Question 19 Table: Monetary Aggregates (in billions) Currency in circulation $ 100 Checkable deposits $ 300 Travelers checks $ 50 Savings deposits $ 75 Small-denomination time deposit $ 700 Money Market Mutual Funds (individuals) $ 500 Large denomination time deposits $ 200 (Table: Monetary Aggregates) Refer to the information in the table above. The money supply measures by M2 is: a. $450 billion b. $1,425 billion c. $1,725 billion d. $2,075 billion