A small mailbag is released from a helicopter that is descending steadily at 1.07 m/s.

(a) After 5.00 s, what is the speed of the mailbag?

v = _____ m/s

(b) How far is it below the helicopter?

d = _____ m

(c) What are your answers to parts (a) and (b) if the helicopter is rising steadily at 1.07 m/s?

v = _____ m/s

d = _____ m

Select one topic below.  Define it and discuss its relationship with stress and wellness according to research.

- Cognitive appraisal

- Perceived control

- Type A or Type B Personality

- Lifestyle factors

- Social support

- Meditation

- Faith

- Alternative medicine

- Type D Personality

Useful links:

https://www.youtube.com/watch?v=qzR62JJCMBQ

https://www.youtube.com/watch?v=Aw71zanwMnY

The concentration of NO3– in a water sample is determined by a onepoint standard addition using a NO3– ion-selective electrode. A 25.00-mL sample is placed in a beaker and a potential of 0.102 V is measured. A 1.00-mL aliquot of a 200.0-mg/L standard solution of NO3– is added, after which the potential is 0.089 V. Report the mg NO3–/L in thewater sample.

Calculate the equilibrium constant for the reaction
S₂O₈^2-(aq) + 2 Fe²⁺(aq) --> 2 Fe³⁺(aq) + 2 SO₄^2-(aq) at 25.0°C, given that the standard cells potentials for the two half reactions at this temperature are
S₂O₈^2-(aq) + 2 e^- 2 SO₄^2-(aq) E = +2.08 V
Fe³⁺(aq) + e^- Fe²⁺(aq) E = +0.77 V

A 10.45-m³ sample of gas (310K, 745mmHg pressure) was passed through a series of traps that removed teh water from the gas. The gas that came out was found to be at 780mmHg pressure and 273K. Its volume was 8.73-m³. What was the percentage of water vapor (v/v) in the original sample of gas? Assume ideal behavior for all gasous compounds.

1. A galvanic cell is based on the following half-reactions at 285 K:

Ag⁺ + e^- → Ag     E^o = 0.803 V  
H₂O₂ (aq) + 2 H⁺ + 2 e^- → 2 H₂O     E^o = 1.78 V

What will the potential of this cell be when [Ag⁺] = 0.571 M, [H⁺] = 0.00341 M, and [H₂O₂] = 0.895 M?

Please show full work .

How will the equivalence point volume change if you titrate the two solutions (solution 1: a 10mL vinegar solution that has a concentration of 5%(w/v%))(solution 2: a 10-mL vinegar solution that has a concentration of 5% (w/v%) together with 30mL of water). What is the pH of the equivalence point of the two solutions if you titrate with 0.3M NaOH?

A simple generator has a square armature 7.0cm on a side. The armature has 95 turns of 0.59-mm-diameter copper wire and rotates in a 0.800-T magnetic field. The generator is used to power a lightbulb rated at 12.0 V and 25.0 W. At what rate should the generator rotate to provide 12.0 V to the bulb? Consider the resistance of the wire on the armature.

The Personnel Department at Hernandez Bros. is centralized and provides services to the two operating units: Miami and New York. The Miami unit is the original unit of the company and is well established. The New York unit is new, much like a start-up company. The costs of the Personnel Department are allocated to each unit based on the number of employees in order to determine unit profitability. The current rate is $560 per employee. Data for the fiscal year just ended show the following.

Miami New York

Number of employees 1,260 360

Number of new hires 16 26

Number of employees departing 14 24

Orlando, the manager of the New York unit, is unhappy with the results of the controller’s study. He asks the controller to develop separate rates for fixed and variable costs in the Personnel Department. The controller reports back to Orlando that the rates would be as follows:

Allocation based on Variable Rate Fixed Rate Total Rate

Employees $ 80 per employee $ 180 per employee $ 260 per employee

Transitions $ 2,060 per transition $ 4,015 per transition $ 6,075 per transition

Required: a. Orlando argues that New York should only be allocated the variable costs from this system, because the company would have to pay the fixed costs even if New York did not exist. Compute the cost allocated to each unit using the approach Orlando prefers.

2.

Upriver Parts manufactures two products, V-1 and V-2, at its River Plant. Selected data for an average month for the two products follow.

	V-1			V-2
Units produced		10,000			1,000
Direct materials cost per unit	$	2		$	4
Machine hours per unit		1			2
Production runs per month		80			40

Production at the plant is automated and any labor cost is included in overhead. Data on manufacturing overhead at the plant follow.

Machine depreciation	$	78,000
Setup labor		34,800
Material handling		17,760
Total	$	130,560

Required:

a. Compute the unit costs for the two products V-1 and V-2 using the current costing system at Upriver (using machine hours as the allocation basis). (Do not round intermediate calculations. Round your answers to 2 decimal places.)
b. Compute the unit costs for the two products V-1 and V-2 using the proposed ABC system at Upriver.

State your hypothesis for Experiment 1 here:

            Due to natural selection, rabbits with the brown fur trait will be less likely to survive predation by wolves within the artic environment because the brown fur trait of these rabbits are easier to spot in a white (artic) environment causing the wolves to be able to hunt them easier. In contrast, the rabbits with the white fur trait can easily camouflage and adapt to their environment causing the wolves to have a difficult time to find prey.

Data Table 1		Graphical Data		Percentage calculations
Generation number	Number of Brown Rabbits	Number of White Rabbits	Total Rabbits	% Brown Rabbits	% White Rabbits
2	0	6	6	0%	100%
5	2	53	55	3.6%	96.4%
7	0	130	130	0%	100%
10	2	640	642	.30%	99.7%

4. Does the data in the table above support your hypothesis for this experiment? Be sure to use

    your data in explaining whether the hypothesis was supported or not.

5. Explain how the fur color trait was influenced by natural selection in your experiment.

1. write a hypothesis for this chart?

Data Table 2		Graphical Data		Percentage calculations
Generation number	Number of Long-tooth Rabbits	Number of Short-tooth Rabbits	Total Rabbits	% Long-tooth Rabbits	% Short-tooth Rabbits
2	3	54	57	5.26%	94.73%
4	6	474	480	1.25%	98.75%
7	0	4	4	0%	100%
10	0	1	1	0%	100%

3. Does the data in the table above support your hypothesis for this experiment? Be sure to use

    your data in explaining whether the hypothesis was supported or not.

4. Explain how the tooth length trait was influenced by natural selection in your experiment.