Part C

Go to the Phase Changes tab. Select the particular molecule, and set the temperature to the given values by using the stove to increase or decrease the temperature. Increase the pressure of the cylinder by moving the lid of the cylinder down with the help of the finger. The pressure of the cylinder is indicated by the pressure gauge on the top left corner of the simulation. On the right-hand side of the simulation is the phase diagram for the molecule.

As the molecules collide on the walls of the cylinder, the pressure of the cylinder does not remain constant; it fluctuates slightly as indicated by the gauge.

In the phase diagram, observe the red point. When a particular molecule is selected, set the temperature and pressure condition to the required value. Observe the position of the red point on the phase diagram when the pressure reaches approximately near the required value.

Which of the following conditions will result in the formation of a supercritical fluid?

Check all that apply.

2. Mansfield Company makes wiring harnesses for the automotive industry. Its standard costs for each harness are 2 direct labor hours per unit at $23 of labor cost per hour, and one pound of plastic harness material at $1.25 per pound. Actual manufacturing data for the period are as follows: Number of Units Manufactured 40,000 Number of Direct Labor Hours Used 79,400 Actual Direct Labor Cost $1,746,800 Number of Pounds of Direct Material Used 40,800 Number of Pounds of Direct Material Purchased 41,000 Actual Direct Material Cost $51,000 Calculate Direct Labor Rate Variance __________ Calculate Direct Labor Quantity Variance __________ Calculate Direct Material Price Variance __________ Calculate Direct Material Quantity Variance __________

What are the dangers of nuclear radiation? Is radiation less dangerous than we think? More dangerous? What radiation dangers do you think are worth worrying about, and what are not? What facts and examples support your conclusions?

The 2011 meltdown of 3 reactors at the Fukushima Daiichi nuclear power plant is in the news again this week as the criminal trial against the plant executives comes to a close. How deadly was the Fukushima disaster? (And how does this compare to the deadliness of the earthquake and tsunami that caused it?) Have you heard of Masao Yoshida, and why people consider him the hero of Fukushima?

What is the connection between the Pauli Exclusion principle, the Aufbau principle, the indeterminacy of fermions, electron configurations and quantum numbers. Why is shielding more effective for electrons in orbitals with lower principal quantum number than for electrons within the same shell?

Gas chromatography and the quantitative method of standard addition to constant volume were used to investigate the concentration of 2,4‑dichlorophenoxyacetic acid (a chlorinated phenoxy herbicide) in a water sample from Lake Eildon.

Liquid-liquid extraction using dichloromethane was used to extract 1.00 L of water sample and the combined extracts were made up to 25 mL in a volumetric flask. A 5.00 mL aliquot of the combined extract was added to each of two 10 mL volumetric flasks. To one flask was added 50.00 μL of a 1.150 x 10^-4 M standard solution of 2,4‑dichlorophenoxyacetic acid. Both flasks were then made up to the final volume. The GC analysis of 10.00 μL of injected sample from each flask resulted in peak areas of 245 mV.s and 290 mV.s for the signal in the chromatograms due to 2,4‑dichlorophenoxyacetic acid.

(Relative molar mass of 2,4-dichlorophenoxyacetic acid = 221.04 g.mol^-1)

(i). Calculate the concentration (mol/L) of 2,4-dichlorophenoxyacetic acid in the working standard solution used for quantitative analysis of the analyte

(ii). Write the standard addition equation and identify the terms to be applied

(iii). Apply the standard addition equation and determine the concentration in mg/L of 2,4‑dichlorophenoxyacetic acid in the original water sample from Lake Eildon

(iv). Identify the likely sources of experimental error in the laboratory method and calculate the percentage error in the value for the concentration of 2,4‑dichlorophenoxyacetic acid determined in (iii) (2 + 4 = 6 marks). Briefly, discuss how you would confirm the validity of the value determined in (iii)

(v). Discuss the likely health risks associated with a concentration of 30 μg/L of 2,4‑dichlorophenoxyacetic acid as compared to typical values found in Australian drinking waters

(vi) Discuss the effectiveness of dissolved oxygen to other common water treatment processes to effectively remove 2,4‑dichlorophenoxyacetic acid from Australian drinking waters

1. Give a summary of some of the main ways in which complexity manifests

   itself in physiological systems.

WRITE IN COMPUTER

The substance HCO3-1 is amphiprotic, meaning is can act as either an acid or a base. Complete the reactions started below to show how it acts as an acid and as a base. Label the conjugate acid and base for each
reaction.

ACID REACTION: HCO3-1 + H2O(l) ?

BASE REACTION: HCO3-1 + H2O(l) ?

1. A force of 45.6 N is applied to a 2.00 kg disc. What is the disk acceleration? 5 points

2. Find the force that causes an acceleration of 6.4 m/s2 to a mass object of 0.50 kg. 5 points

3. A force of 5.34 N acts for 4.23 seconds on a mass that is initially at rest and causes it to move at a distance of 4.75 meters in a straight line. Determine the mass. 10 points

With the growing popularity of casual surf print clothing, two recent MBA graduates decided to broaden this casual surf concept to encompass a “surf lifestyle for the home.” With limited capital, they decided to focus on surf print table and floor lamps to accent people’s homes. They projected unit sales of these lamps to be 8,100 in the first year, with growth of 5 percent each year for the following four years (Years 2 through 5). Production of these lamps will require $46,000 in networking capital to start. Total fixed costs are $106,000 per year, variable production costs are $12 per unit, and the units are priced at $40 each. The equipment needed to begin production will cost $186,000. The equipment will be depreciated using the straight-line method over a five-year life and is not expected to have a salvage value. The effective tax rate is 40 percent, and the required rate of return is 20 percent. What is the NPV of this project? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

COVID-19 belongs to the genera Beta-coronavirus. Compare and contrast the genomic and phenotypic structure between COVID-19 and one other member of the Beta-coronavirus genera, along with their associated pathogenesis?

IN C++!!

Exercise #2: Design and implement class Radio to represent a radio object. The class defines the following attributes (variables) and methods:

Assume that the station and volume settings range from 1 to 10.

1. A private variable of type int named station to represent a station number. Set to
2. A private variable of type int named volume to represent the volume setting. Set to 1.
3. A private variable of type boolean named on to represent the radio on or off. Set to false.
4. A non-argument constructor method to create a default radio.
5. Method getStation() that returns the station.
6. Method getVolume() that returns the volume.
7. Method turnOn() that turns the radio on.
8. Method turnOff() that turns the radio off.
9. Method stationUp() that increments the station by 1 only when the radio is on.
10. Method stationDown() that decrements the station by 1 only when the radio is on.
11. Method volumeUp() that increment the volume by 1 only when the radio is on.
12. Method volumeDown() that decrements the volume by 1 only when the radio is on.
13. Method toString()to printout a meaningful description of the radio as follows(if the radio is on):

The radio station is X and the volume level is Y. Where X and Y are the values of variables station and volume. If the radio is off, the message is: The radio is off.

Now design and implement a test program to create a default radio object and test all class methods on the object in random order. Print the object after each method call and use meaningful label for each method call as shown in the following sample run.

Sample run:

Turn radio on:

The radio station is 1 and the volume level is 1.

Turn volume up by 3:

The radio station is 1 and the volume level is 4.

Move station up by 5:

The radio station is 6 and the volume level is 4.

Turn volume down by 1:

The radio station is 6 and the volume level is 3.

Move station up by 3:

The radio station is 9 and the volume level is 3.

Turn radio off.

The radio is off.

Turn volume up by 2: The radio is off.

Turn station down by 2: The radio is off.

Hydrogen and methanol have both been proposed as alternatives to hydrocarbon fuels.

A) Write balanced reactions for the complete combustion of hydrogen.

B) Use standard enthalpies of formation to calculate the amount of heat released per kilogram of the fuel.

C) Write balanced reactions for the complete combustion of methanol.

D) Use standard enthalpies of formation to calculate the amount of heat released per kilogram of the fuel.

E) How does the energy of these fuels compare to that of octane (C8H18)? Amount of heat released by octane = ?.

1) A spring is 17.8 cm long when it is lying on a table. One end is then attached to a hook and the other end is pulled by a force that increases to 28.0 N , causing the spring to stretch to a length of 19.7 cm

a)What is the force constant of this spring?

b)How much work was required to stretch the spring from 17.8 cm to 19.7 cm ?

c)How long will the spring be if the 28.0 N force is replaced by a 56.0 N force?

2)Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.95×10⁶ N , one 15 ∘west of north and the other 15 ∘ east of north, as they pull the tanker 0.84 km toward the north.

-What is the total work they do on the supertanker?

Express your answer with the appropriate units.

3)A bullet is fired into a large stationary absorber and comes to rest. Temperature measurements of the absorber show that the bullet lost 2150 J of kinetic energy, and high-speed photos of the bullet show that it was moving at 980 m/s just as it struck the absorber.

-What is the mass of the bullet?

4)A running house cat has 13.5 J of kinetic energy at speed v.

a)At what speed (in terms of v) will she have 27.0 J of kinetic energy?

Express your answer in terms of v.

b)What would her kinetic energy be if she ran half as fast as the speed in part A?

5)About 50000 years ago, a meteor crashed into the earth near present-day Flagstaff, Arizona. Recent (2005) measurements estimate that this meteor had a mass of about 1.4×108kg (around 150000 tons) and hit the ground at 12 km/s.

a)How much kinetic energy did this meteor deliver to the ground?

Express your answer using two significant figures.

b)How does this energy compare to the energy produced in one day by a standard coal-fired power plant, which generates about 1 billion joules per second?

Express your answer using one significant figure.

6)The food calorie, equal to 4186 J, is a measure of how much energy is released when food is metabolized by the body. A certain brand of fruit-and-cereal bar contains 160 food calories per bar.

a)If a 60.0 kg hiker eats one of these bars, how high a mountain must he climb to "work off" the calories, assuming that all the food energy goes only into increasing gravitational potential energy?

b)If, as is typical, only 23.0 % of the food calories go into mechanical energy, what would be the answer to part (a)? (Note: In this and all other problems, we are assuming that 100 % of the food calories that are eaten are absorbed and used by the body. This is actually not true. A person's "metabolic efficiency" is the percentage of calories eaten that are actually used; the rest are eliminated by the body. Metabolic efficiency varies considerably from person to person.)

7)Tendons are strong elastic fibers that attach muscles to bones. To a reasonable approximation, they obey Hooke's law. In laboratory tests on a particular tendon, it was found that, when a 252 gobject was hung from it, the tendon stretched 1.20 cm .

a)Find the force constant of this tendon in N/m.

b)Because of its thickness, the maximum tension this tendon can support without rupturing is 137 N . By how much can the tendon stretch without rupturing, and how much energy is stored in it at that point?

8)Pebbles of weight w are launched from the edge of a vertical cliff of height h at speed v0. How fast (in terms of the quantities just given) will these pebbles be moving when they reach the ground if they are launched

a)straight up.

b)straight down.

c)horizontally away from the cliff.

d)at an angle θ above the horizontal.

e)How would the answers to the previous parts change if the pebbles weighed twice as much?

9)A 13.0 N package of whole wheat flour is suddenly placed on the pan of a scale such as you find in grocery stores. The pan is supported from below by a vertical spring of force constant 315 N/m .0

-If the pan has negligible weight, find the maximum distance the spring will be compressed if no energy is dissipated by friction.

10)A 15.0 g plastic ball is dropped from a height of 2.90 m and is moving at 2.70 m/s just before it hits the floor.

-How much mechanical energy was lost during the ball's fall?

For your final exam in electronics, you're asked to build an LC circuit that oscillates at 15kHz . In addition, the maximum current must be 0.15A and the maximum energy stored in the capacitor must be 1.0

Discussion Question 1: Discuss the differences between the Einstein’s Theory of Relativity and Classical Physics Theory (i.e. Galileo and Newton, etc.)

Discussion Question 2: Discuss the wave-particle duality of light and its implications. What are possible industrial applications?