POST #1 (ANSWER ONE OF THE QUESTIONS)
I POST IT TWICE, DONT ANSWER TO BOTH POST. DO NOT COPY YOUR ANSWER TO BOTH POSTS. I NEED TWO DIFFERENT VIEW. Thanks
**DO NOT UPLOAD PHOTOS TO ANSWER MY QUESTION
*****DO NOT COPY FROM ANY WEBSITE. USE YOUR OWN WORD. DO NOT ANSWER IF YOU ARE NOT COMFORTABLE FOR ANY RESON.
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***PLEASE JUST ANSWER THE QUESTION. IT NEED TO BE 150 WORDS.
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Instructions:
Watch the following videos, then answer ONE of the questions below: (150 WORDS)
https://www.youtube.com/watch?time_continue=15&v=9Os7LDOOJao
https://www.youtube.com/watch?time_continue=1&v=BzWWL2LXoNk
Discussion Questions:
How was America affected by the Cold War?
Why did the policy of “containment” develop and what were its goals?
How did the fear of Communism and the “red scare” affect American society during the 1950s?
In: Psychology
1 Scientific Notation and Units
•Know how to identify the correct number of significant figures in a number .•Know how to work with powers of 10.
•Know the main metric units for mass, distance, force, etc.
•Know how to convert between scales for a unit, eg how many centimeters in akilometer.
2 Motion
2.1 Equations•v=∆x∆t•a=∆v∆t
2.2 Skills
•Understand the relationship between acceleration and velocity, and what kind ofmotion occurs when they are same/opposite.
•Know that average velocity is used when the velocity is not constant
.•Find the distance something travels given a constant acceleration and initial/finalvelocities.
•Find the time something takes to travel a certain distance, given constant acceler-ation and initial/final velocities
•Know key elements of free-fall: g is constant and negative.
In: Physics
1. Assume that you can measure the effects of identical concentration of two inhibitors x and Z, on the K and V M and Vmax of an Enzyme. Which of the following would be consistent with inhibitor X being a more effective inhibitor than Z?
2. Explain why an answer is either wrong/right.
a. Inhibitor X increases KM less than inhibitor Z while neither has an effect on V Max.
b. Inhibitor X decreases KM and VMax two-fold while inhibitor Z decreases both three-fold.
c. Inhibitor X doubles the KM and it decreases VMax by 50% while inhibitor Z triples the KM and it decreases the VMax by 40%.
d. Inhibitor X doubles the KM and it decreases VMax by 50% while inhibitor Z triples the KM and it decreases VMax by 10%.
PLEASE EXPLAIN THOROUGHLY!!!!!!!!!!!!!!!!!
In: Chemistry
How do I solve:
1) A gas system has pressure, moles, and temperature of 0.832 atm, 0.303 moles and 8.000°C, respectively. What is the volume in L?
2) A gas system has pressure, volume and temperature of 1500 torr, 3.84 L and 277°K, respectively. How many moles of gas are present?
3) A gas system has a volume, moles and temperature of 8.65L, 0.652 moles and 229°K, respectively. What is the pressure in torr?
4) A technician measures the voltage drop of 25 V across a 100-Ω resistor using a digital voltmeter. Ohm’s law states that V = IR . What is the current flow (I) through the resistor (R )? How much power (P in Watts) is consumed by the resistor? (Hint: P = I2R) (Answer: 250 mA, 6.25 W)
In: Chemistry
The random variable X can take on the values 1, 2 and 3 and the random variable Y can take on the values 1, 3, and 4. The joint probability distribution of X and Y is given in the following table:
|
Y |
||||
|
1 |
3 |
4 |
||
|
X |
1 |
0.1 |
0.15 |
0.1 |
|
2 |
0.1 |
0.1 |
0.1 |
|
|
3 |
0.1 |
0.2 |
||
a. What value should go in the blank cell?
b. Describe in words and notation the event that has probability 0.2 in the table.
c. Calculate the marginal distribution of X and the marginal distribution of Y.
d. Are X and Y independent events? Show why or why not with calculations.
e. Calculate the conditional distribution of X given Y=1.
f. Calculate E(X) and E(Y).
g. Calculate V(X) and V(Y).
h. Calculate E(X|Y=1).
In: Statistics and Probability
Part A 2.5 L of a 4.0 M HNO 3 solution is added to water so that the final volume is 8.0 L . Express your answer using two significant figures.
Part B Water is added to 0.45 L of a 6.0 M KOH solution to make 2.0 L of a diluted KOH solution. Express your answer using two significant figures.
Part C A 80.0 mL sample of 8.0 % (m/v) NaOH is diluted with water so that the final volume is 200.0 mL . Express your answer using two significant figures.
Part D A 5.0 mL sample of 50.0 % (m/v) acetic acid ( HC 2 H 3 O 2 ) solution is added to water to give a final volume of 25 mL . Express your answer using two significant figures.
In: Chemistry
Q1 (a)0.5 kg of water is contained in a rigid vessel at a temperature of 125oC and a pressure of 232.1 kPa. The specific enthalpy is 1050 kJ•kg-1. Which of the following could also be correct?
(A) v = 0.001065 m3 •kg-1 (B) v = 0.7706 m3 •kg-1 (C) x = 0.24 (D) x = 0.5
(b).0.020 kg of air, initially at 20oC is compressed in a perfectly insulated and sealed cylinder which is fitted with a moveable piston. A mean force of 1000 N was applied to the piston as it moved through a displacement of 100 mm to compress the gas. The final temperature of the gas after compression will be?
(A) 27oC (B) 20oC (C) 30oC (D) 13oC
(c). 0.8857 m3 of H2O is stored in a rigid vessel at 200 kPa, 125oC. Is this?
(A) Sub-cooled liquid ? (B) Saturated liquid ? (C) Saturated vapour ? (D) Superheated vapour ?
In: Mechanical Engineering
1. Skip to 2:51 in the video below. The host uses a small magnet to attract a piece of (totally not a Cheerio for copyright reasons) cereal floating in water. We know that cereal as a whole is not magnetic (it's not going to stick to your refrigerator or collect towards the North side of the cereal bowl), so what could be causing this? Make a guess, and explain the physical reasoning behind it?
https://www.youtube.com/watch?v=1Xp_imnO6WE
2. Begin watching the host's explanation, which is the first in the video below. Pause at 1:08. Upon grinding up the cereal, what is his first explanation for the attraction between cereal and a magnet? What evidence does he offer that this explanation is actually insufficient?
3. Watch the rest of his explanation. What is actually causing the apparent "attraction" between the magnet and the non-magnetic object?
https://www.youtube.com/watch?v=jIMihpDmBpY
In: Physics
Under standard conditions, Consider the following standard reduction potentials,
Ni2+(aq) + 2 e- → Ni(s) E° = -0.26 V I2(s) + 2 e- → 2 I-(aq) E° = +0.54 V Under standard conditions,
a)Ni2+(aq) is a stronger oxidizing agent than I2(s) and I-(aq) is a stronger reducing agent than Ni(s).
b)I2(s) is a stronger oxidizing agent than Ni2+(aq) and Ni(s) is a stronger reducing agent than I-(aq).
c)I-(aq) is a stronger oxidizing agent than Ni(s) and I2(s) is a stronger reducing agent than Ni2+(aq).
d)Ni(s) is a stronger oxidizing agent than I-(aq) and Ni2+(aq) is a stronger reducing agent than I2(s).
In: Chemistry
One is able to use Gin (G) and Vermouth (V) to produce martini. A regular martini is produced with 2 portions Gin for 1 portion Vermouth. A dry martini is produced with 5 portions Gin and 1 portion Vermouth. The prices of a regular martini (PM) and a dry martini (PD) are fixed. You have a given supply to both Gin (G) and Vermouth (V). what are the prices of Gin and Vermouth, i.e. WG and WV? You can think of these prices as analogs of the wages for labor and rental rate for capital. Hint WG and WV should be expressed as equations written in terms of PM and PD.
a) Using the previous part, answer the following question: Suppose that the price of dry gin PD increases. Does this increase change wg and wv? If you did not solve the previous part of the problem, explain intuitively what should happen to wg and w.
In: Economics