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Questions Asked on December 14, 2012

If the average of these four numbers is 21, find the missing number.12, 18, 28, ? What is the missing number and why
1. 10 answers
2. asked by Anonymous
3. 5,372 views
The length of a pipe, closed at one end is is 90 cm.Calculate the frequency of the standing wave. What is the fundamental
1. 1 answer
2. asked by amy
3. 532 views
The glass panels of a sky roof need to be coated in order to screen out ultraviolet radiation (10-400 nm wavelength) but without
1. 3 answers
2. asked by Anonymous
3. 909 views
You have two specimens of copper, both of them polycrystalline. Specimen A has an average grain size of 3.091 μm, while
1. 2 answers
2. asked by Anonymous
3. 521 views
a train leaves kanyakumari for warengel on tuesday at 10:30 a.m if warengel 1586 km from kanyakuri when will it reach there if
1. 4 answers
2. asked by arjun
3. 455 views
You are conducting experiments with your x-ray diffractometer.(a) A specimen of molybdenum is exposed to a beam of monochromatic
1. 1 answer
2. asked by Anonymous
3. 461 views
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−4 atomic percent. Assuming that the
1. 0 answers
2. asked by Anonymous
3. 457 views
How could one lower the glass transition temperature of a germate (GeO2) glass? Select all possible ways.Increase the cooling
1. 2 answers
2. asked by Anonymous
3. 539 views
A formation energy of 1.11 eV is required to create a vacancy in a particular metal. At 777oC there is one vacancy for every
1. 4 answers
2. asked by Anonymous
3. 568 views
The half-life of a first order reaction is determined to be 65.0 years. How long will it take for the concentration of the
1. 5 answers
2. asked by Anonymous
3. 604 views
Find the probability of drawing a diamond card in each of the consecutive draws from a well shuffled pack of cards,if the card
1. 1 answer
2. asked by Robert
3. 522 views
A school has a hall which is 22 m long and 15.5 m broad . A carpet is laid inside the leaving all around a margin of 75 cm from
1. 4 answers
2. asked by angel
3. 846 views
You have 29 coins, the total value of which is $1.77. The number of quarter is eight less than the number of pennies and the
1. 1 answer
2. asked by Gina
3. 603 views
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature.
1. 5 answers
2. asked by Joel
3. 550 views
2NaN3(s)==>2Na(s) + 3N2(g)How many liters of N2 are produced at STP if the air bag contains 114g of NaN3 ?
1. 2 answers
2. asked by Lisa
3. 1,916 views
Shown below are several % absorption vs. wavelength diagrams. Identify the correct diagram for a semiconductor.
1. 1 answer
2. asked by Anonymous
3. 415 views
Light is shone on a metal and photoelectrons are emitted.Can you tell me the three things from the listbelow which might cause
1. 1 answer
2. asked by centya
3. 573 views
How could one lower the glass transition temperature of a germate (GeO2) glass? Select ALL possible ways.A)Increase the cooling
1. 5 answers
2. asked by Anonymous
3. 773 views
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature.
1. 10 answers
2. asked by kiril
3. 657 views
A formation energy of 1.11 eV is required to create a vacancy in a particular metal. At 777oC there is one vacancy for every
1. 4 answers
2. asked by kiril
3. 1,060 views
The half-life of a first order reaction is determined to be 92.0 years. How long will it take for the concentration of the
1. 4 answers
2. asked by kiril
3. 464 views
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−8 atomic percent. Assuming that the
1. 3 answers
2. asked by sofia
3. 641 views
Show that a conventional x-ray generator is incapable of generating x-rays of wavelength as low as 10-11m. Do this by
1. 1 answer
2. asked by sofia
3. 442 views
I am working on reducing fractions. How do I find the answer to 12 over 8?
1. 2 answers
2. asked by Miya
3. 191 views
The diffusion coefficient of silver (Ag) in copper (Cu) has the following values:T (K) D (m2s-1) 923 5.42 x 10-16 1173 1.34 x
1. 2 answers
2. asked by vanesa
3. 527 views
You are conducting experiments with your x-ray diffractometer.(a) A specimen of molybdenum is exposed to a beam of monochromatic
1. 6 answers
2. asked by vanesa
3. 1,042 views
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature.
1. 1 answer
2. asked by vanesa
3. 399 views
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.35 kg m-3. Under these conditions the
1. 3 answers
2. asked by lena
3. 561 views
a train leaves kanyakumari for warengel on tuesday at 10:30 a.m if warengel 1586 km from kanyakuri when will it reach there if
1. 2 answers
2. asked by Anonymous
3. 612 views
Show that a conventional x-ray generator is incapable of generating x-rays of wavelength as low as 10-11m. Do this by
1. 3 answers
2. asked by lena
3. 454 views
(a) Cadmium telluride (CdTe) is a semiconductor witha band gap, Eg, of 1.45 eV. Calculate the value of the absorption edge of
1. 1 answer
2. asked by lena
3. 536 views
e=square root d/ab,make d the subject
1. 1 answer
2. asked by centya
3. 502 views
(a+2b+3c)-(4a+6b-5c)
1. 1 answer
2. asked by Anonymous
3. 358 views
A good resource person to go to when asking help in conducting research is a(an):A. Internet expert. B. TV reporter. C.
1. 1 answer
2. asked by Buster
3. 589 views
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−4 atomic percent. Assuming that the
1. 1 answer
2. asked by T
3. 437 views
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature.
1. 3 answers
2. asked by troubled student
3. 437 views
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.87 kg m-3. Under these conditions the
1. 9 answers
2. asked by troubled student
3. 505 views
Show that a conventional x-ray generator is incapable of generating x-rays of wavelength as low as 10-11m. Do this by
1. 2 answers
2. asked by troubled student
3. 399 views
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−2 atomic percent. Assuming that the
1. 7 answers
2. asked by troubled student
3. 510 views
How could one lower the glass transition temperature of a germate (GeO2) glass? Select all possible ways.Increase the cooling
1. 2 answers
2. asked by troubled student
3. 487 views
A formation energy of 1.11 eV is required to create a vacancy in a particular metal. At 777oC there is one vacancy for every
1. 4 answers
2. asked by troubled student
3. 540 views
Show or prove that tan(θ) = v2/rg
1. 2 answers
2. asked by Zakari
3. 1,828 views
(a) Cadmium telluride (CdTe) is a semiconductor witha band gap, Eg, of 1.45 eV. Calculate the value of the absorption edge of
1. 1 answer
2. asked by student
3. 460 views
What is the enthalpy of formation of 2C10H22+31O2=20CO2+22H2O
1. 1 answer
2. asked by Anonymous
3. 864 views
12. An avalanche rescue team travels 8.55 km along a snow-covered trail. For the first section, the trail is flat. The team
1. 1 answer
2. asked by Eric
3. 794 views
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.5 kg m-3. Under these conditions the
1. 4 answers
2. asked by student
3. 967 views
Please help with this problem, not sure calculate it.Consider the standard normal distribution and find P(-1.5 < Z < 2.35).
1. 1 answer
2. asked by Annie
3. 422 views
The sound intensity level at a concert increases from 85 dB to 94 dBwhen the concert begins. By what factor has the sound
1. 1 answer
2. asked by amy
3. 594 views
The diffusion coefficient of silver (Ag) in copper (Cu) has the following values:T (K) D (m2s-1) 923 5.42 x 10-16 1173 1.34 x
1. 4 answers
2. asked by student
3. 702 views
The half-life of a first order reaction is determined to be 72.5 years. How long will it take for the concentration of the
1. 2 answers
2. asked by ch
3. 400 views
When researching for supporting materials about the impact of violence in the media, it is a good idea to get assistance from
1. 2 answers
2. asked by Buster
3. 595 views
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.5 kg m-3. Under these conditions the
1. 2 answers
2. asked by student
3. 472 views
A stretched string of length 80 cm has a fundamental frequency of vibration of 400 Hz.What is the speed of the sound wave in the
1. 1 answer
2. asked by amy
3. 823 views
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−6 atomic percent. Assuming that the
1. 4 answers
2. asked by lisa
3. 872 views
You are conducting experiments with your x-ray diffractometer.(a) A specimen of molybdenum is exposed to a beam of monochromatic
1. 1 answer
2. asked by luis
3. 1,010 views
If52 men can do a piece of work in 35days in how many days 28 men will do it?
1. 1 answer
2. asked by Anil
3. 428 views
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.31 kg m-3. Under these conditions the
1. 4 answers
2. asked by Paul
3. 445 views
The sum of a negative number and its square is 56. What is the number?
1. 2 answers
2. asked by LP
3. 1,056 views
Suppose you invest $1600 at an annual interest rate of 7.9% compounded continuously. How much will you have in the account after
1. 1 answer
2. asked by Tori
3. 831 views
Suppose you invest $1600 at an annual interest rate of 7.9% compounded continuously. How much will you have in the account after
1. 2 answers
2. asked by Tori
3. 951 views
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature.
1. 1 answer
2. asked by luis
3. 464 views
Balance the following equation. (for a balanced eq. aA + bB → cC + dD, enter your answer as the integer abcd)MnO4−(aq) +
1. 1 answer
2. asked by Trina
3. 1,498 views
The ramp shown below is used to move crates of fruit to loading docks of different heights. When the horizontal distance AB is
1. 6 answers
2. asked by Becca
3. 5,165 views
Show that a conventional x-ray generator is incapable of generating x-rays of wavelength as low as 10-11m. Do this by
1. 4 answers
2. asked by kiril
3. 502 views
In the rhombus, m<1 = 18x,m<2 = x + y, and m<3 = 30z. Find the value of the variables x, y, and z.
1. 1 answer
2. asked by Meme
3. 854 views
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−3 atomic percent. Assuming that the
1. 1 answer
2. asked by luis
3. 457 views
x2+7x+10
1. 2 answers
2. asked by larry
3. 270 views
Balance the following equation. (for a balanced eq. aA + bB → cC + dD, enter your answer as the integer abcd)MnO4−(aq) +
1. 1 answer
2. asked by Trina
3. 922 views
The pH of a liquid is a measure of how acidic or basic it is. The concentration of hydrogen ions in a liquid is labeled [H+].
1. 2 answers
2. asked by Tori
3. 897 views
A horizontal slingshot consists of two light, identical springs (with spring constants of 37.7 N/m) and a light cup that holds a
1. 3 answers
2. asked by Anonymous
3. 714 views
Balance the following equation. (for a balanced eq. aA + bB → cC + dD, enter your answer as the integer abcd)MnO4−(aq) +
1. 5 answers
2. asked by Trina
3. 708 views
I need help with this question i don't understand.Sometimes leaders have to make difficult decisions. Scott chose to pursue his
1. 3 answers
2. asked by antboy
3. 416 views
The pH of a liquid is a measure of how acidic or basic it is. The concentration of hydrogen ions in a liquid is labeled [H+].
1. 5 answers
2. asked by Tori
3. 6,015 views
Identify what is wrong with each italicized pronoun reference.If the driver hits another car in a moving violation, the cost of
1. 3 answers
2. asked by yamilex
3. 2,762 views
Which sentence avoids using a pronoun reference error?Al had a dog with fleas, which he was always scratching. When I called the
1. 4 answers
2. asked by yamilex
3. 1,499 views
calculate the number of moles in this quantity: 52.5 mg ZnCl2=?
1. 1 answer
2. asked by Anonymous
3. 332 views
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.79 kg m-3. Under these conditions the
1. 2 answers
2. asked by anonymous
3. 532 views
If 1 and –6 are two of the roots of 6x^4 + 31 x^3 − 33x^2 − 16x + 12, then what are the other two?A. 2 and 3/2 B. -1 and 6
1. 1 answer
2. asked by Bill
3. 281 views
If you know only the outside measurements for any retangle, can you find its area? How? why does this method work?
1. 1 answer
2. asked by di
3. 358 views
My assignment sheet said to plot a KE distribution diagram where 10% of the molecules meet or exceed the Ea. I know the Ea and
1. 2 answers
2. asked by Sky
3. 498 views
If 1 and –6 are two of the roots of 6x^4 + 31 x^3 − 33x^2 − 16x + 12, then what are the other two?A. 2 and 3/2 B. -1 and 6
1. 1 answer
2. asked by Bill
3. 325 views
Find the amount of interest and the monthly payment for the loan. Purchase a car for $42,400 at 2.4% add-on rate for 5 years.
1. 1 answer
2. asked by Reggie
3. 526 views
A software company started with 2 employees. In 6 months, the company had 14 employees. The number of employees increased at a
1. 1 answer
2. asked by Tony
3. 730 views
In which sentence is a homonym used correctly?A. I would not want to be there mother. B. He replaced the brake lining. C.
1. 1 answer
2. asked by Sandia
3. 536 views
Which of these rational numbers does the Rational Roots Theorem say can't be a solution to 14x7 +13x5 − 19x4 + 7x2 − 6x −
1. 0 answers
2. asked by Pat
3. 437 views
At the ocean's surface the pressure is 1 atmosphere. At 66 feet below seal level, the pressure is 3 atmosphere. The Relationship
1. 0 answers
2. asked by Tony
3. 612 views
Which of the following is not a property of logarithms?A. log(A - B) = logA/logB B. logA + logB = logAB C. xloga = loga^x D.
1. 3 answers
2. asked by Pat
3. 1,254 views
3. Which of the following words has a positive connotation? (1 point)childishimmature babyish youthful 4. Which of the following
1. 5 answers
2. asked by tesj
3. 2,579 views
PLEASE CHECK? :OOAnswers On bottom: A. Chose the right verb to complete the sentence. 1. A Marta ____________ comprar un vestido
1. 3 answers
2. asked by Victoria
3. 941 views
On which interval does the Intermediate Value Theorem guarantee that the polynomial x^4 + 7x^2 − 9x −1 has a root? A.
1. 0 answers
2. asked by Amy
3. 417 views
a 32 kg child stands at the edge of a circular platform that rotates at w=2rad/s about its center. Mass of platform=60kg,
1. 2 answers
2. asked by Help!
3. 1,813 views
4 x 2/3 in simplest form
1. 1 answer
2. asked by Anonymous
3. 344 views
The __________report lists the webpage you are currently accessing and indicates if they have written cookies.A.safety B.
1. 1 answer
2. asked by Tam
3. 411 views
There are 9 coins in a piggy bank in terms of dimes and nickels and the value of the dimes is 15 cents more than the value of
1. 1 answer
2. asked by Anonymous
3. 508 views
Heinz Corporation bonds carry a coupon of 8% and will mature in 5 years at $1,000. Newly issued 5-year bonds with similar
1. 0 answers
2. asked by dj
3. 624 views
On which interval does the Intermediate Value Theorem guarantee that the polynomial x^4 + 7x^2 − 9x −1 has a root? A.
1. 1 answer
2. asked by Anonymous
3. 571 views
You are trying to lose weight by working out on a rowing machine. Each time you pull the rowing bar (which simulates the "oars")
1. 1 answer
2. asked by John
3. 467 views
Write fraction in simplest form. 25x2/35x
1. 1 answer
2. asked by Greg
3. 495 views
On which interval does the Intermediate Value Theorem guarantee that the polynomial x^4 + 7x^2 − 9x −1 has a root? A.
1. 0 answers
2. asked by Anonymous
3. 369 views
In rectangle KLMN, KM = 6x + 16, and LN = 49. Find the value of x.
1. 11 answers
2. asked by BaileyBubble
3. 6,863 views

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