A 19.0-kg child on a 4.00-m-long swing is released from rest when the ropes of the swing make an angle of 35.0° with the vertical.

(a) Neglecting friction, find the child's speed at the lowest position.
m/s

(b) If the actual speed of the child at the lowest position is 3.30 m/s, what is the mechanical energy lost due to friction?
J

note: Input-output screen-shot if needed #No-copy paste codes, please.

Q) Create a python functions that rotates the elements of a list by one position. Consider a function rotate(a_list, direction) that takes as arguments the list to rotate, and the direction (left or right) of rotation. Rotate the list in place.

Q) Choice of appropriate data structure is an important step in designing algorithms. Suppose a text file contains student records on each line and each record is of the format: Name of Student, Student ID, GPA. Now consider reading that le to create a list of lists, a list of tuples or a tuple of tuples.
(a) If you want to create a report using the data, what data structure would you use?

(b) If you want to modify the name, id or GPA, what data structure would you use?

[13] Write the equilibrium mass balance expressions for the following equilibrium in terms of (a) KC and (b) KP.
4HCl(aq) + MnO2(s) ? Cl2(g) + 2H2O(l) + MnCl2(aq)

[14] At 700 K the rate constant for the reaction 2NO + O2 ? 2NO2 is 5.73

The dollar cost of debt for Coval​ Consulting, a U.S. research​ firm, is 7.3%.

The firm faces a tax rate of 37% on all​ income, no matter where it is earned. Managers in the firm need to know its yen cost of debt because they are considering a new bond issue in Tokyo to raise money for a new investment there. The​ risk-free interest rates on dollars and yen are

r Subscript $ Baseline equals r$=5%

and r Subscript yen Baseline equals r¥=1.4%

respectively. Coval Consulting is willing to assume that capital markets are internationally integrated and that its free cash flows are uncorrelated with the​ yen-dollar spot rate. What is Coval​ Consulting's after-tax cost of debt in​ yen? ​(Hint: Start by finding the​ after-tax cost of debt in dollars and then finding the yen​ equivalent.)

The​ after-tax cost of debt in dollars is _____________%. (Round to two decimal​ places.)

Malonic acid (FW = 104.06) is a diprotic acid of the form CH2(COOH)2, with pKa1 = 2.847
and pKa2 = 5.696. Assume all solutions are ideal.
(a) If 15.000 g of malonic acid is added to 100 mL of pure water, what will the pH of the
solution be?
(b) You add 18 mL of 5 M NaOH to the solution in part (a). What will the new pH be?
(c) You then add 5.000 g of sodium malonate (Na2CH2(COO), FW = 148.025). What will
the new pH be?

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