Answer:
Explanation:
The capacitive reactance of the capacitor is determined by [tex]X_{C}=\frac{1}{\omega C}[/tex]
When [tex]f'=2f \rightarrow \omega' =2\omega[/tex]
and [tex]X_{C}'=\frac{1}{2}X_{C}[/tex]
(The capacitive reactance will be reduced into 1/2 times of the previous capacitive reactance)
An electrochemical cell is composed of pure copper and pure cadmium electrodes immersed in solutions of their respective divalent ions. For a 6.5 × 10-2 M concentration of Cd2+, the cadmium electrode is oxidized, yielding a cell potential of 0.775 V. Calculate the concentration of Cu2+ ions if the temperature is 25°C.
From the calcuation, the concentration of the copper II ion is 0.98 M.
What is an electrochemical cell?An electrochemical cell is one in which current is produced by means of a chemical reaction. In this cell, the cell reaction is;
Cd(s) + Cu^2+(aq) ----> Cd^2+(aq) + Cu(s)
E°cell = 0.34 V - (-0.40V) = 0.74 V
Using the Nernst equation;
0.775= 0.74 - 0.0592/2 log(6.5 × 10-2)/[Cu^2+]
0.775 - 0.74 = - 0.0592/2 log(6.5 × 10-2)/[Cu^2+]
0.035 = -0.0296 log(6.5 × 10-2)/[Cu^2+]
0.035 /-0.0296 = log(6.5 × 10-2)/[Cu^2+]
-1.18 = log(6.5 × 10-2)/[Cu^2+]
Antilog (-1.18) = (6.5 × 10-2)/[Cu^2+]
0.066= (6.5 × 10-2)/[Cu^2+]
[Cu^2+] = (6.5 × 10-2)/0.066
[Cu^2+] =0.98 M
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Assume you have four fins, each with a mass of 8. 0 grams. What is the total weight of these four fins? (Hint: watch your units!) PLEASE HELP ASAP! I have a 0% in this class
Answer:
0.314 kg
Explanation:
[tex]\frac{8}{1000}[/tex] x 4 x 9.81
Answer:
.3139 joules
Explanation:
Weight in the metric system is ma
you have 4 fins that have MASS of 8 grams each
or 32 grams which is .032 kg
WEIGHT would be .032 kg * 9.81 m/s^2 = .31392 j
What does hydraulic force provide in a braking system?
Power
Heat dissipation
Contact surface
Pressure
Answer:
4 or D pressure
Explanation:
A hydraulic braking system transmits brake-pedal force to the wheel brakes through pressurized fluid, converting the fluid pressure into useful work of braking at the wheels.
Answer:
pressure is the correct answer...
Explanation:
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the engine needs a free flow of clean air to operate correctly and with low emissions. True or False
Answer:
true
Explanation:
An iron–constantan thermocouple is to be used to measure temperatures between 0 and 400°C. What will be the non-linearity error as a percentage of the full-scale reading at 100°C if a linear relationship is assumed between e.m.f. and temperature? e.m.f. at 100°C = 5.268 mV, e.m.f. at 400°C = 21.846 mV
Answer:
-0.89%
Explanation:
Assuming a proportional relationship between EMF and Celsius temperature, the measured value of EMF at 100 °C will be interpreted as a temperature of ...
T/5.268 = 400/21.846
T = 5.268(400/21.846) ≈ 96.457 . . . . °C
The error as a fraction of full scale is ...
(96.457 -100)/400 × 100% ≈ -0.886%
The error at 100 °C is about -0.89% of full scale.
Please help me with this question
Answer:
4.2
Explanation:
The "allowance" is the difference between the maximum shaft size and the minimum hole size.
maximum shaft = C +D = 8.5 +0.1 = 8.6
minimum hole = A -B = 4.8 -0.4 = 4.4
Allowance = 8.6 -4.4 = 4.2
__
For an interference fit, the allowance is negative.
Why are specimens usually very thin slices of material.
How Monopolies and Collusions Affect the Economy
Describe the concepts of monopoly and collusion in a market economy. Give five examples of monopolies and collusion among sellers and their effects on the market economy.
Answer:
Image result for How Monopolies and Collusion Affect the Economy Describe the concepts of monopoly and collusion in a market economy. Give five examples of monopolies and collusion among sellers and their effects on the market economy.
Collusion can lead to: High prices for consumers. This leads to a decline in consumer surplus and allocative inefficiency (Price pushed up above marginal cost) New firms can be discouraged from entering the market by types of collusion which act as a barrier to entry.
Explanation:
i hope this helped
all of the following are ways to avoid breaking a bolt when removing it except:
select one:
a. using penetrating oil with bolts that are rusted or corroded in place.
b. applying maximum force in both directions.
c. first checking whether it is a left-hand bolt.
d. as a last resort, you may heat up the bolt that is rusted or corroded in place.
All of these are good ideas to remove a bolt, except for applying the maximum force in both directions.
What is a bolt?It is a metallic long bar that is used in multiple objects and machines to fasten two or more elements together.
How to remove a bolt?Bolts are removed using tools such as a 6-point wrench and applying force either to the left or right depending on the bolt. Moreover, rusted bolts need to be carefully removed to avoid breaking them down.
In this way, techniques such as using oil, checking if it is a left-hand bolt, and heating the bolt are valid. However, it is not a good idea just apply maximum force in any direction because this is likely to break the bolt.
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There are withdrawn 100 ft3
of air measured at 30 psia and 90°F from a 50 ft3
tank containing air
initially at 100 psia and 140°F. What is the pressure of the air remaining in the tank if its
temperature is 130 °F?
Answer:
2+2g
what time is good afternoon my
Calculate LER for the same wing if we increase the span to 0.245 m. By increasing the span, we also increase the glider weight to 0.0523 newtons.
4.74
0.2108
0.0523
0.18
Answer:
0.2108
Explanation:
WA = 0.245 x 0.045 = 0.011025 m2. Then, LER = 0.011025/0.0523 = 0.2108.
How deep is a 6ft hole?
Answer:
I know this sounds quite deep but it is as deep as a grave
Explanation:
It's reality
Answer:
6ft or 72 inches
Explanation:
The hole is most likely 6ft or also known as 72 inches.
Hope this helps :-)
Have a great rest of your day or night!
<3 simplysun
Where do you look
for leaks coming from
the differential of a car?
Answer:
the side of the cover and draining along the bottom.Apr 1, 2021
Explanation:
i talking turtle with a key on its back told me
How many design did it take to make the eiffel tower?
Answer:
search is up
Explanation:
hope this helps!
A(n) ______ is used to measure fluid flow in engineering
Answer:
A pitot tube is used to measure fluid flow in engineering
Briefly explain the four (4) main classification of rural latrine in Ghana and give example each.
Answer:
Temporally pit latrine ,improved latrine,ordinary latrine
Explanation:
l think the temporally latrine are used for camp ,vacation. improved latrine are at home for those who can afford. an ordinary latrine is used by people who can not afford money for removing fieces in the improved or temporally latrine
Which of the following materials are examples of ceramics?
A
fiberglass, carbon fiber, and Kevlar
B
cedar, mahogany, and bamboo
C
brick, glass, and porcelain
D
nylon, leather, and asbestos
Answer:
c
Explanation:
A are types of fiberous materials
B is woods
c ceramics
D unrelated materials
Technician A says that a range shift is used to select high or low gear ratios within the transfer case. Technician B says that a mode shift is used to select two wheel drive or four wheel drive. Which technician is correct
Technician A says that a range shift is used to select high or low gear ratios within the transfer case is true while Technician B is false.
What is this shift about?A range shift is known to often take place when there is either high or low speed ratio of the given transfer case that is known to be selected.
Note that A range shift arrangement is known to be seen for moving a gear reduction unit that is found between a low-range operating speed and also that of a high-range operating speed.
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An amount P is deposited now so that an equal annual amount of A1=2000 per year for the first 5 years, starting 1year after the deposit. And a different annual withdrawal of A2= 3000 per year for the following 3 years. Draw the cash flow diagram if i=8.5% per year.
Based on the amounts to be withdrawn over the years and the interest rate, the amount deposited now is $12,977.
How much is deposited now?This can be found as:
= (2,000 x Present value of annuity interest factor, 8.5%, 5 years) + (3,000 x Present value of annuity interest factor, 8.5%, 8 years) - (P/A, 8.5%, 5 years)
= (2,000 x 3.9406) + (3,000 x (5.6392 - 3.94064))
= $12,977
The cashflow diagram is attached.
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A liquid jet vj of diameter dj strikes a fixed cone and deflects back as a conical sheet at the same velocity. find the cone angle θ for which the restraining force f = (3/2)rhoajvj^2 .
Answer:
lol i cant real it sorry
Explanation:
technician A says that many port fuel-injection systems on four-cylinder engines use a simultaneous firing of injectors. Technician B says that sequential fuel injectors are timed and pulsed individually, much like the spark plugs are sequentially operated in firing order of the engine. Who is correct
In the two scenario above concerning port fuel-injection and sequential fuel injectors, only Technician b is correct.
How many injectors can be found in a 4 cylinder?A vehicle often has one fuel injector per cylinder and if one has a four-cylinder car, it would also have four fuel injectors.
Note that Fuel-pressure regulators that are found on a port fuel-injected systems is one that often work with injector pressures that is said to be of 30 to 55 PSI.
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explain the S.A. co-ordinate system used in surveying
Answer:
A coordinate system is a method for identifying the location of a point on the earth. Most coordinate systems use two numbers, a coordinate, to identify the location of a point. Each of these numbers indicates the distance between the point and some fixed reference point, called the origin
Describe why the motion of a follower acted on by a cam is periodic motion.
How can the use of local materials improve the standard of living of Filipinos?
Find the magnitude of the two pulling forces P and Q when their resultant is 50 N at 20° with Q. P 20°
A company intends to market a new product and it estimates that there is a 20% chance that it will be first in the market
and this will give 2 million dollar revenue in its first year. However, if it is not the first in the market it will only be .5 million.
What is the EMV?
The EMV - Ending Market Value is given as:
$2,400,000.
The EMV is given as:
BMV x (i + r); Where
BMV is the Beginning Market Value; and
r is the interest rateor percentage given.
Hence the EMV = 2,000,000 x ( 1 + 20%)
= 2,000,000 x 1.2
= $ 2, 400,000.
It is to be noted that the BMV is the Beginning Market Value which is the value of an investment at the start of the business period.
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What are employers required to do to keep employees safe from caught-in and -between hazards from hand-held power tools?
Answer:
Employees who use hand and power tools and who are exposed to the hazards of falling, flying, abrasive and splashing objects, or exposed to harmful dusts, fumes, mists, vapors, or gases must be provided with the appropriate equipment needed, including Personal Protective Equipment, to protect them from the hazard.
Explanation:
