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2011
March
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March 22, 2011
a train goes forward at a speed of 1m/s for 20 seconds. Then it stops abd goes backward at a speed od 0.5 m/s for 4 seconds.
2 answers
asked by
veronic
603 views
Determine whether each binomial is the difference of two square. If so, factor it. If not, explain why.
-m^6
2 answers
asked by
peg
607 views
A student performs an experiment to determine the enthalpy of neutralization of hydrochloric acid and sodium hydroxide. The
3 answers
asked by
Rachel
1,162 views
Give 2 specific examlples of an organic molecule.
I think 2 of them are carbohydrates and proteins.
2 answers
asked by
sharice
812 views
Kim and Susan are playing a tennis match where the winner must win 2 sets in order to win the match. For each set, the
2 answers
asked by
guy
641 views
X-rays with an energy of 300 keV undergo Compton scattering from a target.
If the scattered x-ray are directed at 30 degrees
4 answers
asked by
Jennifer
686 views
The linear absorption coefficient for 0.05 nm x-rays in lead and in iron are respectively, 5.8x10(4) /m and 1.1x10 (4) /m. How
2 answers
asked by
Jennifer
773 views
When 90 kJ is removed from a 2-kg copper bar its temperature drops from 200 degrees celcius to 85 degrees celcius what is the
4 answers
asked by
Brenda
3,172 views
You have been hired by first citizens bank as a financial analyst. One of your first assignments is to analyze the present
1 answer
asked by
don
497 views
Find the inflection point(s), if any, of the function.
g(x)= 4x(^3)-4x
1 answer
asked by
Anonymous
348 views
Determine where the function is concave upward and where it is concave downward.
g(x)=-x(^2)+4x+8
1 answer
asked by
Anonymous
513 views
The temperature of your skin is approximately 35C degrees. What is the wavelength at which the peak occurs in the radiation
4 answers
asked by
Abby
2,414 views
A car moves 26km due east then 14km due north. It then turns along a path running north east with 15 km,then 17 km due west.If
3 answers
asked by
muhammed
578 views
I Need Help On My Math Evaluates: Okay So I Have This Quiz Im Taking And Its Telling Me " Evaluate 3-1/3 to the power of 4" I Am
3 answers
asked by
Adrienne
652 views
A coin is tossed 13 times. How many different outcomes have at least 2 heads ?
1 answer
asked by
rachel
666 views
A hollow, thin-shelled ball of mass rolls along a horizontal surface with a translational speed of .
1 answer
asked by
kyle
467 views
I have an electrical circuit which has 20V shown on left side
I=0.8A on top I = 0.3A on bottom I have to find the resistance
5 answers
asked by
Beth
489 views
Draw a line 5cm long divide it in the ratio 7:3 measure the longer part
1 answer
asked by
Muhd muhd
354 views
the current in a stream moves at a speed of 2 mph. A boat travels 8mi upstream and 8mi downstream in a total time of 7 hr. What
2 answers
asked by
Anonymous
513 views
The surface areas of two similar figures are given. The volume of the largwe figure is given. Find the volume of the smaller
2 answers
asked by
Elizabeth
1,156 views
what is the mass of a single oxygen autom
3 answers
asked by
brian
405 views
the half life of tritium is 12.5 years. How much of a 1 g sample will remain after 25 years
1 answer
asked by
Brenda
1,330 views
the largest a party balloon can get before bursting is 8.23L at 25 degrees celsius and 1.00 atm. supposing you fill the balloon
4 answers
asked by
Anonymous
1,759 views
How many minutes does it take for light from the sun to reach the earth?
2 answers
asked by
brad
553 views
One pump can empty a pool in 5 days, whereas a second pump can empty the pool in 7 days. How long will it take the 2 pumps,
1 answer
asked by
Jaison
464 views
Describe and define the types of government that the different city-states chose for themselves. I mean about Crete- Or minoans
3 answers
asked by
Hayley
1,030 views
determine the mass of CO2 produced when 76.8g of CaO is reacted with 50.0 g of C acording to the unbalanced equation...
CaO + C
3 answers
asked by
Anonymous
1,125 views
A grasshopper floating in water generates waves at a rate of three per second with a wavelength of two centimeters. (a) What is
4 answers
asked by
Brenda
2,270 views
is experimenting a subject or predict nominative
1 answer
asked by
sara
367 views
A sample of radioactive material weighing 45 grams has a decay rate of 4.25% each day. The equation y = 45(2.7)–0.0425t can be
1 answer
asked by
Sarah
437 views
What volume would be occupied by 100 g of oxygen gas at a pressure of 1.50 atm and a temp of 25 degrees C.
3 answers
asked by
Danielle
2,215 views
An airplane can travel 380 miles into the wind in the same time that it can travel 420 miles with the wind. If the wind speed is
4 answers
asked by
Mikel
762 views
Which produces more sugar beets, Ukraine or Russia?
1 answer
asked by
Alyonka
476 views
Michelle has 200lbs of potatoes and 50 cchickens. James has 80lbs of potatoes and 40 chickens. what is Michelles opportunity
1 answer
asked by
Brenda
473 views
Two of these statements are false. Identify them.
1.4x12>3x15 2.96/2<96/3 3.28+82>31+13
3 answers
asked by
Mona
458 views
A photon of energy E strikes an electron at rest undergoes pair production, producing a positive electron(positron) and an
1 answer
asked by
Abby
911 views
Find the future value of the ordinary annuity with payout of $20,000
at 4.5% interest compounded annually for 12 years.
1 answer
asked by
wendy
443 views
Answer the following questions
what does pre viernes el pescado o el bonyo mean what does que co mis parlemis i duno mean? what
2 answers
asked by
nothing
565 views
Erik Johnson has just become a heir to $15 000. He's 23 years old, and hes graduated frm university business program. He works
2 answers
asked by
Anonymous
935 views
Hi
Looking for some guidance please, I need to find the initial-value problem for dy/dx = 1+2cos^2x / y. y = 1 when x = 0. any
1 answer
asked by
Claire
385 views
Can you check these sentences for me, please? Thank you very much.
1)He proposes he should pay for the racer himself. 2)She spent
3 answers
asked by
Mike
842 views
When you push a 1.55 kg book resting on a tabletop it takes 2.10 N to start the book sliding. Once it is sliding, however, it
3 answers
asked by
amanda
671 views
A backpack full of books weighing 43.0 N rests on a table in a physics laboratory classroom. A spring with a force constant of
1 answer
asked by
jen
668 views
A 54.0 kg person takes a nap in a (lightweight) backyard hammock. Both ropes supporting the hammock are at an angle of 16.9°
5 answers
asked by
mike
721 views
Prove that sin squared 20 degrees+sin squared 40 degrees+ sin squared 80 degrees is equal to 3/2
1 answer
asked by
cindy
500 views
A cylindrical copper cable carries a current of 1070 A. There is a potential difference of 1.6 10-2 V between two points on the
1 answer
asked by
Sara
514 views
does the stars in a galaxy slowly rotate around a center.
1 answer
asked by
shakiyla
304 views
how do you solve:
5x=2/3
1 answer
asked by
Marylu
287 views
Pushing on the pump of a soap dispenser compresses a small spring. When the spring is compressed 0.55 cm, its potential energy
1 answer
asked by
Alan
1,038 views
At an amusement park, a swimmer uses a water slide to enter the main pool.
If the swimmer starts at rest, slides without
4 answers
asked by
Randy
973 views
the tuition at a college increases exponentially. the current tuition (let it be t=0) is 36,000 and in 2 years it will be
1 answer
asked by
Joe
521 views
I need help on this question plz
The mean of Five numbers is 28. Two of the numbers are the same. If three of the numbers are
1 answer
asked by
ST
423 views
Catching a wave, a 77-kg surfer starts with a speed of 1.1 m/s, drops through a height of 1.60 m, and ends with a speed of 8.5
4 answers
asked by
John
3,656 views
Use mathematical induction to establish the following formula.
n Σ i² / [(2i-1)(2i+1)] = n(n+1) / 2(2n+1) i=1 Thanks for any
7 answers
asked by
Francesca
733 views
Find f^-1(13), f(x)= 2x^5 + 3x^3 + 8x
and find D(f^-1(x)) at x=13. Is this correct... I got 1/27 ??
1 answer
asked by
Sierra
303 views
A 125-ft diagonal brace on a bridge connects a support of the center of the bridge to a side support on the bridge. The
2 answers
asked by
jackster
525 views
Describe how to prepare an aqueous 100 mL stock solution of 2 M sodium chloride solution.
1 answer
asked by
Brittany
480 views
20(1/5n - 3/4) + 9n
1 answer
asked by
J
226 views
Which of the following would be the LEAST appropriate in the closing paragraph of a negative message?
a. "Let us know if model
4 answers
asked by
MaS
675 views
A 4.5 object moving in two dimensions initially has a velocity = (11.5 i+ 22.0j). A net force then acts on the object for 2.0 s,
2 answers
asked by
Matt Jones
601 views
I need help understanding this FRQ prompt:
Analyze the circumstances around the decision to ultimately relocate persons of
1 answer
asked by
Jenny
482 views
Which one is correct?
He changes by learning to read. He changes by learning how to read.
6 answers
asked by
Tasha
325 views
How do I find the slope of the line tangent to the graph of each function at the given points?
y=x^2+2x-8
1 answer
asked by
Tracie
466 views
What provides the centripetal force :
i)on the elctron orbiting the proton in a hydrogen atom ii)satellite orbiting the planet
5 answers
asked by
Nelly
462 views
when an ice skater wants to slow down or stop, she drags the jagged front of her skate blade along the ice. What force is
1 answer
asked by
Isabella
481 views
In an experiment we did in class ethanol was poured into a test tube and we noticed that the ethanol did not collect and form a
2 answers
asked by
cassandra
782 views
Evaluate each value as a trigonometric function of an angle in Quadrant 1.
#1 cos (27pi/8)
2 answers
asked by
Stephanie
1,146 views
500.0 g of ammonia react with 51.0 moles of sulfuric acid to produce ammonium sulfate. How many moles of excess sulfuric acid
2 answers
asked by
Anonymous
875 views
The perimeter of the rectangle is 19 inches. The perimeter of the inscribed triangle is also 19 inches.
What is the width of the
2 answers
asked by
Alexis
652 views
At the top of a pole vault, an athlete actually can do work pushing on the pole before releasing it. Suppose the pushing force
4 answers
asked by
blah
3,913 views
Can someone help me factor this problem?
Generally I wouldn't have a problem doing it, but today we're supposed to factor
2 answers
asked by
Anna
678 views
what are part owners in a corporation
1 answer
asked by
Brieeshia
300 views
or the period 1990-2003, the amount of biscuits, pastas, and noodles y (in thousands of metric tons)imported into the united
3 answers
asked by
Bri
653 views
besides being a war for independence why else was the american revolution violent?
6 answers
asked by
Anonymous
438 views
Can you please check these questions, please? Thank you very much in advance
1) I had to do the cleaning twice a day. 2) It took
2 answers
asked by
Mike
554 views
Can someone please help me with this problem.
Given Matrix Y= 2 -7 4 and -1 1 0 Matrix Z= 3 4 1 4 2 -4 Solve for matrix X.
4 answers
asked by
Sue
528 views
A cannon of mass 200kg, fires a cannonball with a mass of 10kg. The cannon ball leaves the barrel of the cannon with a velocity
4 answers
asked by
Nelly
1,820 views
An ethylene glycol solution contains 20.9 g of ethylene glycol (C2H6O2) in 85.0 mL of water. Compute the freezing point and
3 answers
asked by
Lilly
509 views
how long is a five k????? Is it 5 kilometers or 5 miles??
1 answer
asked by
Alyssa
337 views
What is the answer if you have a nail NOT a FINGERNAIL butt A NAIL?
What is the nearest cm and what is the neartest mm
4 answers
asked by
Bailey
276 views
(a) Determine the amount of work (in joules) that must be done on a 95 kg payload to elevate it to a height of 1007 km above the
3 answers
asked by
Steve
655 views
Three point charges, 5.6E-6, 2.2E-6, and -3.0E-6, lie along the x-axis at 0.00 m, 0.031 m, and 0.059 m.
What is the force exerted
2 answers
asked by
alisha
582 views
A 0.46 kg object connected to a light spring with a spring constant of 18.0 N/m oscillates on a frictionless horizontal surface.
2 answers
asked by
:)
573 views
a cyclist bikes over a path at 10 miles per hour. he returns over the same path at * miles per hour. what was his average speed
1 answer
asked by
kai
497 views
Can you please check my essay?
Heres the prompt: En el capítulo 4 del libro, encontrarás un texto sobre los estereotipos
2 answers
asked by
Talia
544 views
for an exotherimic reaction incresing the reaction temperature results in a (n)___k ?
1 answer
asked by
jay
366 views
given reaction at equilibrium, if Kp=1.05 at 250 degree celcius, then kc =
3 answers
asked by
jay
710 views
Find how many terms has an a.p whose common diffrence and first term are respectively negetive 6 and 8 and the last term is 82.
4 answers
asked by
Abdul
1,248 views
How many grams of water are present in 0.500 moles of calcium sulfate hemihydrate?
2 answers
asked by
Talisa
534 views
1/6 students like math, 2/3 like reading and 12 like science. How many students were asked.
5 answers
asked by
Kaitlyn
425 views
A rotation id described by it's ____ and ____?
1 answer
asked by
Jaydirah
383 views
the solubility of BaF2 is 6.29x10^-3M and the solubility of barium fluoride in 0.15M NaF is 4.4x10^-5M. Compare the solubility
2 answers
asked by
roshan
939 views
Courtney, a sales manager, and her team of six have been assigned the task of developing a marketing strategy for a new software
2 answers
asked by
shantay
748 views
the numbers below are Fibonacci numbers.
1,1,2,3,5,8,13,21,34,55,... write a rule for the pattern. what are the next three
5 answers
asked by
julian
466 views
A 3.00- flask is filled with gaseous ammonia, . The gas pressure measured at 28.0 is 1.25 . Assuming ideal gas behavior, how
1 answer
asked by
lily
519 views
what is an outcast story
1 answer
asked by
donna
362 views
find the sum estimate to cheack if the answer is reasonable
3 answers
asked by
casey
380 views
What is western europe economy like? What has water done to effect the economy?
5 answers
asked by
Courtney
475 views
How can I use Newton's 3rd law on a diver off of a diving board? Could I calculate friction against his feet?
1 answer
asked by
Joe
502 views
a 275mL sample of vapor in equilibrium with 1-propylamine at 25C is removed and dissolved in 0.500L of H20. For 1-propalamine,
3 answers
asked by
leanna
730 views
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