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david

Questions and answers by visitors named david, page 3

Questions (508)

few other questions.1.) Suppose you expend 430 kilocalories during a long walk, how many liters of ice water at 0 degrees do you
1. 1 answer
2. 455 views
An object is solid throughout. When the object is completely submerged in ethanol alcohol., its apparent weight is 15.2 N. When
1. 1 answer
2. 672 views
few other questions.1.) Suppose you expend 430 kilocalories during a long walk, how many liters of ice water at 0 degrees do you
1. 2 answers
2. 605 views
An object is solid throughout. When the object is completely submerged in ethanol alcohol., its apparent weight is 15.2 N. When
1. 4 answers
2. 1,369 views
how do I calculate what temperature is needed to heat 52 grams of ethane to occupy 1200ml?
1. 5 answers
2. 304 views
. What must happen in order for a sound wave to form?A. An electric current must flow. B. A certain frequency must be reached.
1. 3 answers
2. 754 views
A 52 g mountain climber, start from rest, climbs a vertical distance of 730 m. At top, she is again at rest. In the process, her
1. 5 answers
2. 2,694 views
in outo engine whith no pollusion controls, about 5% of the fuel(assume 100%actane c8H18)is unburned .calculate the mass and
1. 1 answer
2. 374 views
equation of circle passing through P(10,3), Q(11,8), and R(7,14).
1. 1 answer
2. 366 views
prove that out of the rectangles under the curve = e raised to the power of -xsquared on the x axis and upper vertices on the
1. 1 answer
2. 826 views
Find the mean for each set of data. Round to the nearest tenth if necessary.12, 20, 8, 15, 16, 14, 7, 5, 11, 8, 14 a. 11.8 b.
1. 29 answers
2. 1,031 views
one type of probability used everyday is: a)experienced probabilityb)scientific probability c)frequency of occurence d)none of
1. 2 answers
2. 993 views
the solutions to the system of equations y= 2x and y =-x + 3 isa)2,1 b)(-1,2) c)2,-1) d)(1,2)
1. 5 answers
2. 367 views
the solution to the system of equations y= 2x and y = -x + 3 isa)2,1 b)(-1,2) c)2,-1) d)(1,2)
1. 4 answers
2. 2,167 views
a christmas tree is 34 feet tall. it casts a shadow 24 feet long. toms christmas tree is standing beside the tree at rockefeller
1. 2 answers
2. 1,100 views
o Find a movie review in an online publication for a movie currently playing in theaters. Post the link to the review for the
1. 3 answers
2. 466 views
joe has a mass of 50 kg and sally has a mads of 30 kg. they sit in class with a separation of 0.5 meters. Find hhe gravitational
1. 3 answers
2. 654 views
francisco designed a triangular garden surrounded by three square gardens. the area of garden c (the largest garden) is 400 sq.
1. 1 answer
2. 485 views
how many grams of ethenol do i need to burn in excess oxygen in order to recover 5.0 g of h2o in a 75% yield
1. 1 answer
2. 356 views
26 1/4- 5 3/10
1. 1 answer
2. 236 views
should the film "Speak" be studied in english 9?Why?"Speak"by Laurie Halse Anderson
1. 3 answers
2. 445 views
draw me an indifference curve where someone does not value integrity very much compared to income
1. 1 answer
2. 847 views
Adams Enterprises’ noncallable bonds currently sell for $1,120. They have a 15- year maturity, an annual coupon of $85, and a
1. 5 answers
2. 2,177 views
If you inject carbon nanotubes into the body, can we produce antibodies against it?some ideas: - my answer is yes and no... the
1. 1 answer
2. 393 views
The lengths of what are considered "1 inch bolts are found to be normally distrubted with a mean of 1.001 inches and a standard
1. 3 answers
2. 537 views
the best way to describe classical Greek art would (paragraph) example would include the statue
1. 4 answers
2. 410 views
The amount of money in an account with continuously compounded interest is given by the formula A=Pe^rt , where P is the
1. 3 answers
2. 852 views
A 9ft. Ladder is leaning against a wall and make a 50 degree angle with the ground. How far is the ladder from the base of the
1. 2 answers
2. 481 views
In this summer school class there are 28 male students and 15 female students. An experiment is done that consists of selecting
1. 1 answer
2. 458 views
In our initial survey, the guess at the mean age for the class had a mean of 21.9 and a standard deviation 3.03.Using this
1. 1 answer
2. 334 views
In our initial survey, the guess at the mean age for the class had a mean of 21.9 and a standard deviation 3.03.Using this
1. 1 answer
2. 312 views
In our initial survey, the guess at the mean age for the class had a mean of 21.9 and a standard deviation 3.03.Using this
1. 1 answer
2. 331 views
In our initial survey, the guess at the mean age for the class had a mean of 21.9 and a standard deviation 3.03.Using this
1. 1 answer
2. 359 views
In a survey, the guess at the mean age for the class had a mean of 21.9 and a standard deviation of 3.03.Given that Normally
1. 1 answer
2. 391 views
What evidence do you see, in the book Dancing Skeletons, of a holistic study?
1. 3 answers
2. 770 views
X horsepower is equal an 20lb. Object traveling at 90mph. Is it possible to solve for X? and if so, what does X equal?
1. 1 answer
2. 301 views
Damon, thanks for your answer. Consider that the 20lb object is being pulled behind a bid rig truck traveling at 90mph, can it
1. 1 answer
2. 331 views
A uniform beam 6m long and weighing 4kg rest on support p and q placed left and right 1m from each end of the beam. Weight of
1. 3 answers
2. 1,140 views
I need to know how to work this math problem: 3n + (-7) -5n +1
1. 3 answers
2. 765 views
a worker drops a wrench from the top of a tower 90m tall. what is the velocity wgen the wrench strikes the ground?
1. 1 answer
2. 439 views
how many liters of oxygen will react with 124.5 liters of propane
1. 2 answers
2. 489 views
A ramjet is to propel an aircraft at Mach 3 at high altitude where the ambient pressure is 8.5 kPaand the ambient temperature
1. 3 answers
2. 861 views
if there were two proteins samples of exactly the same concentration but one sample contained a protein having a significantly
1. 1 answer
2. 369 views
que planetas tndrian esas mismas manifestaciones
1. 2 answers
2. 90 views
use the given zero to find the remaining zeros of each function.g(x)=x^3+3x^2+25x+75;zero:-5i
1. 1 answer
2. 462 views
5th grade class of 16 students, one-half of the student arrived at school early, one-fourth arrived on time, and one-eighth
1. 4 answers
2. 505 views
what did galileo do in science that made him so famouse
1. 1 answer
2. 394 views
i to write a wellcome letter,wellcoming the new colonies to the United State and ease the fears
1. 2 answers
2. 770 views
why is it necessary to make up to the 250 ml mark while during dilution?
1. 1 answer
2. 275 views
Once a 28 kg crate is in motion on a horizontalﬂoor, a horizontal force of 51 N keeps the crate moving with a constant
1. 1 answer
2. 677 views
X is a complex number. but X is not equal to 1. X^2011=1Compute the sum X^(2n)/((x^n)-1) where n=1,2,3...2010
1. 1 answer
2. 260 views
A farmer has 30yd of fencing and wants to enclose an area beside his barn. What are the dimensions of the region of maximal
1. 2 answers
2. 584 views
Use Cavalieri's Principle to find the area of the region.In the example we see a "leaning tower" with base 'a' and height 'b'.
1. 1 answer
2. 418 views
wats 460 miles and 20 gallons as a unit rate
1. 1 answer
2. 416 views
A(n) 3.91 kg sphere makes a perfectly inelastic collision with a second sphere that isinitially at rest. The composite system
1. 1 answer
2. 748 views
my tank is 38 inches tall 45 inches in diameter. How many gallions does it hold?
1. 1 answer
2. 395 views
Having difficulty with the four frequency ,to use in a table and determine and find the range ..im not understanding whays
1. 1 answer
2. 314 views
Identify the capitalized part of speech in the following sentence:You should be proud of him, FOR he's a "jolly good fellow."
1. 2 answers
2. 594 views
Draw a quadrangle below.Measure the sides to the nearest 1/2 inch.Write the length next to each side.Find the perimeter.
1. 5 answers
2. 437 views
A truck covers m in 8 s while smoothly slowing down to a final speed of 2.8 m/s.(a) Find its initial speed. (b) Find its
1. 1 answer
2. 375 views
You have a 1 L container of a gas O 2 at 20°C and 1 atm. Subtracting the weight of the container, what is the mass of the gas?
1. 1 answer
2. 385 views
A circle of radius r is centered at the origin and a rectangle is inscribed. The area of the rectangle as a function is given by
1. 2 answers
2. 487 views
a one meter chain that weights one newton sits on a flat horizontal table that is one meter from the floor. the coefficient of
1. 1 answer
2. 465 views
Make an Maplet that does the simple calculator funtions as addition, subtraction, multiplication, division, factorial, sin(),
1. 1 answer
2. 821 views
When you spend $1 at the grocery store, the store doesn’t keep all of your money as profit. Some of it is reinvested in the
1. 1 answer
2. 472 views
¿Cuál frase es correcta?El hijo del maestro, quien estuvo en mi clase, es muy inteligente. El hijo del maestro, a quien estuvo
1. 1 answer
2. 434 views
Escribe el cual (la cual, los cuales, las cuales) o lo cual en el espacio.Nos invitaron a cenar con ellos, ____ fue una buena
1. 1 answer
2. 674 views
Write an equation of the hyperbola with foci (0, ) and (0, 2) and vertices of (0, ) and (0, 1).
1. 2 answers
2. 748 views
Which radioactive emanations have a charge of -1?beta particles alpha particles gamma rays neutrons
1. 4 answers
2. 1,164 views
Write an equation for a parabola with vertex at (3,- 6) and focus at (3,- 4).
1. 1 answer
2. 383 views
Which of the following properties did Rutherford use in his experiment?A. the negative charge of the alpha particles and the
1. 2 answers
2. 1,028 views
Surgery vs. placebo for the knee pain: Refer to Example 10. Is Arthroscopic Surgery Better than Placebo? Here we show MINITAB
1. 1 answer
2. 357 views
After watching golf on TV several times with her father, 7-year-old Michelle learned how to swing a club even before she
1. 4 answers
2. 335 views
A rolling ball moves from x1 = 3.2 cm to x2 = -4.2 cm during the time from t1 = 3.8 s to t2 = 6.1 s. What is its average
1. 5 answers
2. 1,760 views
(3,0),0,-4).solve for the following :
1. 1 answer
2. 234 views
(3,0),0,-4).solve for length, standard form.
1. 1 answer
2. 284 views
(3,0),0,-4).solve for length, standard form.thank you
1. 1 answer
2. 234 views
A roller coaster travels 196ft at an angle of 61.1° above horizantally. How far does it travel horizantally?
1. 1 answer
2. 352 views
Write a number which rounds to 66,000 when rounded to the nearest ten thousand
1. 5 answers
2. 1,130 views
A chemical distillation tower, 110 m high is supported by cables of length L that reach from the top of the column to the ground
1. 1 answer
2. 392 views
How many liters of gasoline are there in 165 gal (US) of a methanol-gasoline blend that is 11.0% by volume?
1. 1 answer
2. 344 views
It is estimated that one third of one per cent of the Earth’s surface receives more energy from the sun than the total
1. 1 answer
2. 397 views
It is estimated that one third of one per cent of the Earth’s surface receives more energy from the sun than the total
1. 1 answer
2. 451 views
explain the term carbonate error ..
1. 1 answer
2. 252 views
Why can a water-ethanol solution be used for recrystallization but not a water-hexane solution?
1. 2 answers
2. 800 views
The solubility of acetanilide in hot water (5.5 g/100 mL at 100C) is not very great, and its solubility in cold water (0.53
1. 4 answers
2. 4,492 views
Carborundum (silicon carbide) boiling chips are better than calcium carbonate chips in the recrystallization of an unknown,why ?
1. 2 answers
2. 634 views
Carborundum (silicon carbide) boiling chips are better than calcium carbonate chips in the recrystallization of an unknown,why ?
1. 4 answers
2. 1,525 views
• A student crystallized a compound from benzene and observed only a few crystals when the solution cooled to room
1. 1 answer
2. 828 views
A chemist conducted a recrystallization on 18.5 g of a solid and collected 12.5 g from the first, and 2.7 g from the second
1. 2 answers
2. 1,053 views
A hot recrystallization solution is not filtered unless absolutely necessary.give reason.
1. 4 answers
2. 1,979 views
An Erlenmeyer flask containing a hot solution is not tightly stoppered to prevent solvent loss during cooling. give reasons.
1. 4 answers
2. 1,500 views
The suction of a vacuum filtration apparatus is broken before the vacuum is turned off.give reason.
1. 3 answers
2. 1,396 views
Vacuum filtration is avoided when crystals are isolated from a very volatile solvent.why?
1. 4 answers
2. 1,143 views
Four boxes of cereal are to be selected at random from a continuous process thatfills boxes labeled "Contents: 340 g." The
1. 2 answers
2. 539 views
If a rock is thrown upward on the planet Mars with a velocity of 13 m/s, its height in meters t seconds later is given by y =
1. 3 answers
2. 2,262 views
A chemical engineer designed a 625 ft long tailings channel to have a rhombus cross-section that is 9.5 ft deep, with walls
1. 1 answer
2. 369 views
A regular triangular pyramid has an altitude of 15.0 m and the base is 8.00 m on a side. Find the area of a section made by a
1. 1 answer
2. 837 views
This is the Crailsheim water tower in Baden-Württemberg, Germany. Its construction was completed in 1912.The base of the tower
1. 1 answer
2. 457 views
i have 8 coins in my piggy bank. I have twice as many dimes as I have quarters. I have twice as many pennies as I have dimes. I
1. 1 answer
2. 362 views

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