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paul

Questions (329)

in the compton scattering event, the scattered photon has an energy of 120 keV and the recoiling e- has an energy of 40 keV.
1. 3 answers
2. 1,100 views
need helppp.Find the energy of an x-ray photon that can impart a maximum energy of 50 keV to an electron by Compton collision.
1. 0 answers
2. 794 views
how many planes of reflection (sigma v) does the letter "H" have? an infinite amount? this is for an intro to group theory /
1. 0 answers
2. 452 views
if I want to find the uncertainty for a certain molar mass containing 4 atoms of Oxygen, do I multiply the error and the MM by
1. 0 answers
2. 617 views
would NBr3O be polar or nonpolar?
1. 1 answer
2. 456 views
would one consider the molecule NBr3O to be nonpolar or polar? I feel like all of the dipole moments will cancel, when you draw
1. 0 answers
2. 472 views
would one consider the molecule NBr3O to be nonpolar or polar? I feel like all of the dipole moments will cancel, when you draw
1. 0 answers
2. 561 views
I'm not too good with these special relativity problems :/The question is: A 20 kiloton bomb releases 8 x 10^13 joules. How much
1. 3 answers
2. 476 views
This seems like a pretty straightforward question but it's just not making sense at the moment.A meter stick is projected into
1. 0 answers
2. 644 views
you have 2 positive numbers. One number is one-fifth of the other number.The difference between the two numbers is 152, find the
1. 1 answer
2. 1,624 views
back again with another analytical Q,the question tells you to prep a 50 mL solution of a 750 ppm iron solution using ammonium
1. 2 answers
2. 593 views
want someone to check if this is right,Q: The concentration of lead in drinking water in a home was found to be 2.1x10-9 M. What
1. 3 answers
2. 652 views
A bicycle is rolling down a circular portion of a path; this portion of the path has a radius of 8.73 m. As the drawing
1. 2 answers
2. 8,205 views
on monday 464 students went on a trip to zoo .all 9 buses were filled and 5 students had to travel in cars. how many students
1. 2 answers
2. 1,109 views
If an object is thrown in an upward direction from the top of a building 160 ft high at an initial speed of 30 mi/h, what is its
1. 1 answer
2. 1,288 views
any o-chemists out there? Some help would be greatly appreciated. So I have this compound, it has 5 C's total, a bromine at one
1. 1 answer
2. 455 views
okay so I'm given a graph of a melting profile of a macromolecule, it is a sigmoid "s" curve, which states that a protein is
1. 0 answers
2. 760 views
a 70 kg block rests on the earth's surface. How much energy is required to move the block very far from the earth, ending up at
1. 1 answer
2. 560 views
At a boarding school, in the evening, 9 students always take walks in groups of 3. How can the groups be arranged so that each
1. 0 answers
2. 599 views
why would dipole moment increase with temperature for a planar molecule? even though those are inversely related...
1. 1 answer
2. 422 views
what mass of AgBr is produced when 100.0 mL of 0.150 M AgNO3 is added to 20.0 mL of 1.00 M NaBr?
1. 1 answer
2. 701 views
Which of the following passages from the novel is most useful in helping you determine what type of ruler general gage is from
1. 5 answers
2. 951 views
80 buckets of water fill a pond each bucket holds 2litres how much water does the pond hold
1. 2 answers
2. 534 views
write a simple c++ application that displays different varieties of meal. the application must do the following;I. allow a user
1. 0 answers
2. 458 views
identify 3 kinds of artifacts and explain what they tell us about ancient people.
1. 1 answer
2. 502 views
3/5 + 3/4 round each fraction and estimate the sum. add the two fraction using a common denominator and then round the result.
1. 8 answers
2. 2,561 views
The spinal cord serves as a conduction pathway for impulses going to and from the ________.A. Lungs B. Liver C. Brain D. Heart
1. 1 answer
2. 568 views
The participants in a weight-loss class lost the following weights (in pounds) after three weeks of dieting:1,5,2,1,3,6 Assuming
1. 1 answer
2. 990 views
P=2L+2W;L=68,W=84
1. 1 answer
2. 296 views
The sum of two page numbers on facing page of a book is 81. What are the page numbers
1. 1 answer
2. 491 views
Please help me to correct my English grammar. thank you.June 17, 2014 Dear sir, Good day, I regret when I resigned from your
1. 1 answer
2. 867 views
Hello there,im doing an equation and its mind boggling me badly so i want to see if im doing something wrong or not. It goes
1. 1 answer
2. 594 views
A new moon is discovered orbiting Neptune with an orbital speed of 9.3 ´ 10 m/s. Neptune’s mass is 1.0 ´ 10 kg. What is the
1. 1 answer
2. 2,190 views
solve 6x^3-13x^2+x+2=0 using a graphing calculator. then use your answer to write the given function in factored form. (do not
1. 1 answer
2. 490 views
Felicia paid $125 to join tennis club. paid $5 every time she used the courtwrite an equation that describes Felicia's total
1. 2 answers
2. 669 views
write an equation that describes Felicia's total cost for playing tennis as a function of the number of times she plays.let c
1. 1 answer
2. 425 views
An airplane has a mass of 32272.2 kg and takes off under the influence of a constant net force of 39990.0 N. What is the net
1. 0 answers
2. 529 views
Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test,
1. 1 answer
2. 2,630 views
During takeoff, an airplane, climbs with a speed of 180 m/s at an angle of 34º above the horizontal. The sun is shining
1. 3 answers
2. 3,974 views
A hill that has a 15 % grade is one that rises 15.0 m vertically for every 100.0 m of distance in the horizontal direction. At
1. 1 answer
2. 687 views
Marks: 5 A hill that has a 15 % grade is one that rises 15.0 m vertically for every 100.0 m of distance in the horizontal
1. 1 answer
2. 742 views
A 1523.7 kg car traveling with a speed of 20.8 m/s. What is the magnitude of the horizontal net force that is required to bring
1. 1 answer
2. 460 views
An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 10.6 m/s in 4.0 s.
1. 1 answer
2. 982 views
Two workers are trying to move a heavy crate. One pushes on the crate with a force A, which has a magnitude of 445 N and is
1. 1 answer
2. 1,734 views
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 60.0º above the horizontal. The rocket is fired
1. 0 answers
2. 902 views
A circus performer begins his act by walking out along a nearly horizontal high wire. He slips and falls to the safety net, 25.0
1. 1 answer
2. 976 views
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.0 m/s. The car is a
1. 1 answer
2. 580 views
Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crash-resistant
1. 0 answers
2. 789 views
A fire hose ejects a stream of water at an angle of 35.0º above the horizontal. The water leaves the nozzle with a speed of
1. 3 answers
2. 2,046 views
There are 159 counties in Mississippi, 60 of these counties have French names, what percentage is that?
1. 1 answer
2. 358 views
what is bongo
1. 1 answer
2. 393 views
A car travels in a straight line for 4h at a constant spped 73km/h.What is its acceleration? Answer in units m/s^2
1. 1 answer
2. 357 views
x^2+3x-10 divided by x-2
1. 4 answers
2. 311 views
what is the same meaning of hedge
1. 2 answers
2. 471 views
same meaning gulp
1. 2 answers
2. 381 views
Discuss 10 ways in which the environmentAl health hazard can impact negatively on ones health
1. 1 answer
2. 665 views
Exhibit a behaviour that you do every day that you think is influenced by heredity and environment. Describe how three of the
1. 1 answer
2. 474 views
What is the functional advantage of the cat having so many muscles performing the same or very similar action? How does this
1. 1 answer
2. 681 views
What is the functional advantage of the cat having so many muscles performing the same or very similar action? How does this
1. 1 answer
2. 484 views
even in multicell organisms (ex: animals) events which occur in individual cell may have profound effects on their entire
1. 0 answers
2. 353 views
even in multicell organisms (ex: animals) events which occur in individual cell may have profound effects on their entire
1. 0 answers
2. 399 views
Describe the events that take place in the movement of fluid in the capillary beds. What forces are involved in the movement of
1. 1 answer
2. 526 views
What is the frequency of a sound wave whose vibrations occur 5 x 10^-3 sec apart?
1. 0 answers
2. 349 views
Describe the events that take place in the movement of fluid in the capillary beds. What forces are involved in the movement of
1. 1 answer
2. 546 views
Describe the body’s stress response in terms of the actions of the adrenal cortex and medulla. What are the different hormones
1. 1 answer
2. 857 views
Describe the body’s stress response in terms of the actions of the adrenal cortex and medulla. What are the different hormones
1. 0 answers
2. 827 views
Describe the body’s stress response in terms of the actions of the adrenal cortex and medulla. What are the different hormones
1. 1 answer
2. 493 views
If the 12.5ml of NaOH solution is required to react completely with 0.300g of KHP (Potassium Hydrogen Phthalate, 204.2g/mol).
1. 1 answer
2. 580 views
25 is increase to 100What is the percent of change?
1. 1 answer
2. 354 views
percent of change20 is decreased to 11. What is the percent of change?
1. 2 answers
2. 387 views
what is the external pressur, if ethanol is boiling at a temperature of 70 degrees celsius
1. 1 answer
2. 402 views
At 25°C the vapour pressure of pure pentane is 511 torr and that of hexane is 150. torr.What is the mole fraction of pentane in
1. 1 answer
2. 1,826 views
A solution which contains 40.3 g of an unknown molecular compound in 360 g of water freezes at -5.07°C.What is the molar mass
1. 1 answer
2. 922 views
Use the tangent line approximation to approximate the value of ln(1008)
1. 1 answer
2. 573 views
Find the derivative of g(x)=cos(107x)
1. 2 answers
2. 406 views
in an account that has 500 dollars and has an interest rate of 7.5% annually after 18 years would be what
1. 2 answers
2. 392 views
Joel has twice as many cds as Mary has. Subtracting 7 from the number of cds Joel has and dividing by 3 equals the number of cds
1. 1 answer
2. 430 views
Joel has twice as many cds as Mary has. Subtracting 7 from the number of cds Joel has and dividing by 3 equals the number of cds
1. 2 answers
2. 647 views
Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first
1. 2 answers
2. 797 views
A glass melting furnace is burning ethane (C2H4) in pure oxygen (not air). The furnace operates at an equivalence ratio of 0.9
1. 0 answers
2. 973 views
You have a gaseous octane (C8H18(g)). Calculate the lower heating value (LHV) and higher heating value (HHV) of the given fuel
1. 0 answers
2. 812 views
Dr. Doolittle was often late for his daily psychology class, and his eager students decided they'd had enough. One day, the
1. 1 answer
2. 545 views
In order to study the schools of children from poor families, Jonathan Kozol moved to several different U.S. cities and taught
1. 3 answers
2. 429 views
Bronfenbrenner's bioecological theory is often explained by using a diagram that looks like a target with the individual in the
1. 1 answer
2. 566 views
Individual differences originate as a result of three basic developmental influences. These influences can best be summed up as:
1. 2 answers
2. 471 views
Abstract thinking and scientific reasoning generally do not begin to develop until:A. middle adulthood. B. young adulthood. C.
1. 1 answer
2. 451 views
Because Lucy is large for her age, she may not have many friends. This is an example of the interaction between which two types
1. 2 answers
2. 442 views
Which one of the following instances is an example of qualitative change?A. Last year two-year-old Helga could not talk, but now
1. 1 answer
2. 449 views
Life span developmental studies are based on the idea that:A. development occurs early in life, but not in late adulthood. B.
1. 1 answer
2. 626 views
whats the value of the 5 in 752,034
1. 1 answer
2. 851 views
Please post a 150-300-word response to the following discussion question by clicking on Reply. What are some of the challenges
1. 2 answers
2. 614 views
7 digit number have 8 in the thousands place.
1. 0 answers
2. 321 views
In 1980 in Montana the temperature rose from -32 degree's f to 15 degree's f in 12 hours. How much did the temperature increase?
1. 1 answer
2. 435 views
In 1980 in Montana the temperature rose from -32 degree's f to 15 degree's f in 12 hours. How much did the temperature increase?
1. 1 answer
2. 479 views
In 1980 in Montana the temperature rose from -32 degree's f to 50 degree's f in 12 hours. How much did the temperature increase?
1. 1 answer
2. 389 views
The density of Hexane is 0.659 g/mL. What is the mass of hexane in 25.9 mL?
1. 1 answer
2. 605 views
1. How do you display letters in uppercase in access? how do you display in lowercase in access?2. how do you round a number to
1. 1 answer
2. 513 views
Light from a 550 nm source goes through two slits 0.040 mm apart, a screen is 1.5 m from the slits.a)what is the angular
1. 2 answers
2. 614 views
What is the force exerted on 40 micro coulombs by 20 micro coulombs? (charges are separated by 80cm)
1. 1 answer
2. 1,153 views
5/7-2/3=
1. 1 answer
2. 224 views

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