A magnet slid down the inclined aluminum ramp with a constant velocity, rather than accelerating. Alluminum is not a magnetic material so there should be no magnetic attraction between the magnet and the aluminum. Explain the process that caused this to happen.

Points will be awarded yo answer with most detail and examples.

How does the trade regime present opportunities and challenges for development?

1. Explain what it means for the normal distribution to be symmetrical about the mean?

2. Why is it important to know the mean and standard deviation for a data set when applying the empirical rule?

3. If we are focused on 68% of the normal distribution, what percentage of the distribution is left in the upper tail only?

4. What value separates the 50% of the distribution from the other 50% of the distribution?

(a) Two 58 g ice cubes are dropped into 380 g of water in a thermally insulated container. If the water is initially at 22°C, and the ice comes directly from a freezer at -16°C, what is the final temperature at thermal equilibrium? (b) What is the final temperature if only one ice cube is used? The specific heat of water is 4186 J/kg·K. The specific heat of ice is 2220 J/kg·K. The latent heat of fusion is 333 kJ/kg.

Please write clear definitions of the following legal terms.

1. Consideration
2. Contractual Capacity
3. Duress
4. Fixture

A solid disk has a total kinetic energy K. What is its rotational kinetic energy Krot if it's rolling without slipping?

Human computer interaction

An online air ticket reservation company is experimenting with a new interactive user interface design for its customers. Study any leading online air ticket reservation system to understand this interface and using it, give examples of any three social impact of interface design for following elements. You can use screenshots to elaborate your example.

1. Describe the new system and its benefits
2. Outline the development process

Imaging Inc., a developer of radiology equipment, has stock outstanding as follows: 15,000 shares of cumulative preferred 2% stock, $140 par, and 50,000 shares of $25 par common. During its first four years of operations, the following amounts were distributed as dividends: first year, $28,200; second year, $65,800; third year, $83,300; fourth year, $110,000.

Compute the dividends per share on each class of stock for each of the four years. Round all answers to two decimal places. If no dividends are paid in a given year, enter "0".

Database Design and SQL

Consider the following relations:

Student (snum: integer, sname: string, major: string, level: string, age: integer)
Class (name: string, meets_at: time, room: string, fid: integer)
Enrollment (snum: integer, cname: string)
Faculty (fid: integer, fname: string, deptid: integer)

Write the following queries in SQL. Also, there should be no duplicates printed in any of the answers.

a) Find the names of all students who are enrolled in two classes that meet at the same time.
b) Find the names of faculty members for whom the combined enrollment of the courses that they teach is less than five.
c) Print the Level and the average age of students for that Level, for each Level.
d) Print the Level and the average age of students for that Level, for all Levels except JR.
e) Find the names of students who are enrolled in the maximum number of classes.
f) Find the names of students who are not enrolled in any class.

1. Consider a galvanic cell consisting of the following two redox couples:

            Ag⁺(0.010M) + e^- --> Ag(s)    E⁰ = +0.80 V

         Cr³⁺(0.010M) + e^- --> Cr(s)   E⁰ = -0.74 V

Write the equation for the half reaction occurring at the cathode

Write the equation for the half reaction occurring at the anode.

Write the equation for the cell

What is the standard cell potential E⁰_cell for the cell?

Realizing the nonstandard concentrations, what is the actual cell potential, E⁰_cell for the cell? What is the value of the Nernst equation

A sheet of glass is coated with a 505-nm-thick layer of oil (n = 1.42).

PART I:

For what visible wavelengths of light do the reflected waves interfere constructively?
Express your answer numerically. If there is more than one answer, enter your answers in ascending order separated by commas.

λ =______nm

PART II:

For what visible wavelengths of light do the reflected waves interfere destructively?
Express your answer numerically. If there is more than one answer, enter your answers in ascending order separated by commas.
λ =______nm

PART III
What is the color of reflected light?
A. Green-Blue
B Orange
C Yellow
D Red
PART IV:
What is the color of the most part of transmitted light?
A. Yellowish green
B. Orange
C, Blue
D. Red

The demand for video recorders has been estimated to be QV = 145 - 3.2Pv +7M - .95Pf -39PM, where Qv is the quantity of video recorders, PF denotes the price of video recorder film, Pm is the price of attending a movie, PV is the price of video recorders, and M is income. Based on the estimated demand equation we can conclude:

A. Video recorders are normal goods B. Video recorder are normal goods and demand for video recorders is inelastic C. The demand for video recorders is inelastic D. Video recorders are normal goods and video recorder film is a complement for video recorders A and C A and B

1. you want to buy your dream car which will cost you $5900. If you could invest your entire savings of $3500 at an annual interest of 12%, how long (in years rounded to two decimal places) would you have to wait until you have accumulated enough money to buy the car? answer

2. You want to buy a house in 9 years and expect to need $25000 for a down payment. If you have $14000 to invest, how much interest do you have to earn (compounded annually) to reach your goal? (Enter your answers as a decimal rounded to 4 decimal places, not a percentage. For example, enter 0.0843 instead of 8.43%)

Determine the mass (in g) of Ca₃(PO₄)₂ that is produced when 140 mL of a 8.48×10^-2 M Na₃PO₄ solution completely reacts with 778 mL of a 1.54×10^-2 M CaCl₂ solution according to the following balanced chemical equation.  

2Na₃PO₄(aq) + 3CaCl₂(aq) → Ca₃(PO₄)₂(s) + 6NaCl(aq)