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tom
Questions and answers by
tom
, page 2
Questions (442)
A pump is required to lift 800 liters of water per minute from a well 15.0 m deep and eject it with a speed of 17.0 m/s.
How much
3 answers
815 views
do pcr generated luxAB or gel purified luxAB work better in getting white colonies? WHy? please help. thanks
1 answer
917 views
4Fe+3o2 =
1 answer
315 views
PLease HeLP! You work for a moving company and are given the job of pulling two large boxes of mass m1 = 112 kg and m2 = 287 kg
4 answers
627 views
plane traveling 200 km/hr with supplies for people 110 meters below. how many second before do they have to drop the supplies
3 answers
993 views
I DON'T KNOW WHAT IM DOING WRONG!!!!!!NASA has built centrifuges to enable astronauts to train in conditions in which the
2 answers
1,077 views
Consider again the problem of a car traveling along a banked turn. Sometimes roads have a "reversed" banking angle. That is, the
2 answers
620 views
what is the given value of the variable
a+4 diveded by 8 a=3.75
3 answers
254 views
the time that a traffic light remains yellow is 1 second more than 0.05 times the speed limit. what is the yellow time for a
1 answer
478 views
Four people, each with a mass of 72.7 kg, are in a car with a mass of 1110 kg. An earthquake strikes. The driver manages to pull
1 answer
685 views
A diver springs upward from a board that is three meters above the water. At the instant she contacts the water her speed is
2 answers
595 views
A soccer player kicks the ball toward a goal that is 28.6 m in front of him. The ball leaves his foot at a speed of 18.5 m/s and
1 answer
490 views
A rifle that shoots bullets at 460 m/s is to be aimed at a target 47.0 m away. If the center of the target is level with the
3 answers
1,485 views
A baseball is hit at ground level. The ball reaches its maximum height above ground level 2.6 s after being hit. Then 2.1 s
2 answers
914 views
An insurance company estimates 40 percent of its claims have errors. The insurance company wants to estimate with 90 percent
2 answers
565 views
calculate the future value of an investment of $8,500 if it is to be invested for 9 years at an interest rate of 6.1%,
3 answers
599 views
what must the interest rate be if an investment is to double its value in 15 years, compounded monthly
in decimal form, rounded
3 answers
428 views
Doug Corporation purchased Leslie Company's entire business for $3,200,000. The fair market value of Leslie's net identifiable
3 answers
462 views
1. Use the following data for questions 1 and 2.On March 12, 2005, Trio, Inc. acquired melting equipment for $37,000. The
0 answers
438 views
1. Use the following data for questions 1 and 2.On March 12, 2005, Trio, Inc. acquired melting equipment for $37,000. The
2 answers
698 views
an auther's purpose in using rhetoric is to?
a. create a certain effect for the reader b. present facts as they realy are c.
3 answers
492 views
A person wins 500 points in a game.
What is the corresponding number?
1 answer
419 views
A satellite of mass 210 kg is launched from a site on Earth's equator into an orbit at 210 km above the surface of Earth.
(a)
3 answers
874 views
I need a specific article that deals with monopoly power, either regulated or illegal attempts at monopolization.
1 answer
408 views
A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential
4 answers
3,737 views
A monatomic ideal gas expands from point A to point B along the path shown in the drawing.
(a) Determine the work done by the
3 answers
1,916 views
if you exert a force of 500 N to walk 4 m up a flight of stairs in 4 s, how much
2 answers
504 views
"The Fed should simply increase the money supply at the same rate that the full employment economy grows, and the government
2 answers
789 views
Can eletrolysis be used to separate salt in the sea int o elemental sodium and clorine gas -- somthing like 2NaCl --> 2Na + Cl2
2 answers
725 views
five sentences about the role of education in successful financial planning
1 answer
437 views
an oilo slick 110 nm 1.0 * 10^6 square meters of ocean.How many liters of oil are in the slick
1 answer
299 views
a plane is flying at an altitude of x with the distance at 800 meters with an angle of 70 degress. what equation would you use
2 answers
1,119 views
at 25˚c the density of water is 0.997g/cm³,the density of ice at -10˚c is 0.917g/cm³. if a soda can volume is 240 ml is
2 answers
531 views
A peddler is taking eggs to the market to sell. The eggs are in a cart that holds up to 500 eggs. If the eggs are removed from
4 answers
948 views
a speaker was so boring that one-half of the audience left after a few minutes. Five minutes later, one-third of the remaing
4 answers
740 views
find integral using table of integrals )
integral sin^4xdx this the formula i used integral sin^n xdx =-1/n sin^n-1xcosx +n-1/n
4 answers
612 views
INTEGRAL OF Y^2/(25+Y^2)
1 answer
280 views
if cos(pi/4) is sqrt2/2
i thought sec(pi/4) is 2/sqrt 2,but its just sqrt 2 . can some one please explain.
2 answers
909 views
A car is driven east for a distance of 49 km, then north for 21 km, and then in a direction 30° east of north for 27 km.
3 answers
1,060 views
how does the direction ( clockwise or counterclockwise effect the values of the unit circle? what does it mean?
1 answer
393 views
what is the molarity if 0.5 grams of sodium chloride is dissolved to make 0.05 mL of solution?
1 answer
701 views
find the arc length of f(x)=x^2/2
1 answer
301 views
i have a ti 83, and i want to plug this equation r=1+cos(theta)( this is polar coordinates) into my calculator but the graph
1 answer
410 views
Select a variable (mean, proportion, variance or standard deviation) of interest to you and collect data consisting of at least
2 answers
590 views
Shawna thinks that 8x2=17. what number pattern shows that she not correct?
3 answers
348 views
stacy multiplied 5x9 and said the answer was 44. what two patterns could you use to show that her answer is not correct?
1 answer
349 views
. Given the following stocks 4M NaCl, 3M NaOH, 5M HCl
(a) Prepare 200ml of a solution containing 0.5M NaCl and 0.1M (b) Prepare
3 answers
984 views
find the derivative
f(x)= 4xe^x f(x) = ln (2z-11)^7 f(x) = ln (x-1/3x+1)
1 answer
259 views
solve x & y:
3X-6Y(-6X+34)=30
1 answer
346 views
can some one help 3>4+5+
1 answer
216 views
If you have a population mean of 50 and a population standard deviation of 5 and you select a sample size of 100, what is the
1 answer
481 views
the federalist papers were written to what?
win support for the constitution in new york expose the lack of civil liberties
3 answers
1,543 views
The function y(x, t) = (25.0 cm) cos(ðx - 15ðt), with x in meters and t in seconds, describes a wave on a taut string. What is
1 answer
355 views
Suppose that the average grade for all people who take this course in statistics is 83 with a standard deviation of 3.5. If your
2 answers
535 views
The factor that normally has the most impact on the president's level of popular support is
a. world conditions. b. the condition
2 answers
498 views
tan(theta)-1= sin^2(theta)-cos^2(theta)/ sin(theta)cos(theta)+cos^2(theta) prove each identity
1 answer
414 views
sinx+sinxcot^2x=cscx
prove each identity
3 answers
951 views
Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state
1 answer
487 views
can someone please help me im stumped on these two.
use analytical methods to solve the equation. 1+(1/x)=(42/x²)
1 answer
407 views
If Q varies inversely as the square root of R and Q=2 when R=4, what is Q when R is 25?
does Q=625 im not sure can someone double
1 answer
485 views
It is possible for a quadratic equation to have no real-number solutions:Solve : x2 + 5x + 3 = 0
1 answer
376 views
The diagonals of rhombus FGHJ intersect at point K. If side GH is equal to 3x - 10 and side JH is equal to 6x - 19, find x.
2 answers
705 views
The average score on a standardized test is 500 points with a standard deviation of 50 points. What is
the probability that a
4 answers
1,577 views
The average score on a standardized test is 750 points with a standard deviation of 50 points. If 2,000
students take the test at
3 answers
1,187 views
A telemarketer with B2B Communications has a 20 percent historical probability of making a sale during a shift where 100 calls
2 answers
503 views
a student tries to open a door at a distance of 1 cm from the hinge at a distance of 10 cm from the hinge and at a distance of
1 answer
316 views
Consider the average available for all hotel rooms from the previous assignment. Identify the point estimate of the average
1 answer
388 views
Given that ΔHof of copper (II) chloride, CuCl2(s), is –220.1/kJ and ΔHof of copper (I) chloride, CuCl(s), is –137.2 kJ,
1 answer
433 views
Calculate the percent yield if 104 g of CH3CO2CH2CH3 is produced by the reaction of 111 g of CH3CO2H according to the following
3 answers
736 views
A car travels along a straight stretch of road.
It proceeds for 15 mi at 55 mi/h, then 29 mi at 43 mi/h, and finally 37.9 mi at
3 answers
548 views
decimal value for 1/11
1 answer
296 views
why are electron groups that repel each other higher in energy?
1 answer
256 views
The solubility of a certain compound in ice-cold water is 0.22g in 100mL. Its solubility in hot water is 4.35g in 100mL What is
4 answers
1,640 views
how does gps works
1 answer
319 views
9/10Y = 36
What is Y
4 answers
377 views
A piece of copper is made into a rod with a square cross-section. The side of the square is 2.00 centimeters. The resistivity of
1 answer
790 views
A 2200 kg car is travelling at 45 km per hour when its brakes are applied and it skids to a stop. If the coefficient of friction
4 answers
1,311 views
my numerator is a prime number
My denominator is divisible by 2 i am equivalent to 1/5
4 answers
596 views
a real gas would behave most like an ideal gas under conditions of
3 answers
941 views
List at least one way in which an acute triangle and an obtuse triangle are different.
1 answer
358 views
List at least one way in which a scalene triangle and equilateral triangle are the same.
5 answers
369 views
the figure shows that the angle of elevation to the top of the building changes from 20 degree to 40 degree as an observer
5 answers
2,020 views
A particle is displaced from the point ( 4 m, 12 m ) to the point ( 9 m, 1 m ) in 30 seconds.
Calculate the direction (with
1 answer
364 views
Let f(x)=(x^2)+x+14. What is the value of f(x) for which the tangent line to the graph of y=f(x) is parallel to the x-axis?
3 answers
509 views
At 22 degrees Celsius and a pressure of 755 mm Hg, an unknown gas was found to have a density of 4.52 g/L. When analyzed, the
2 answers
664 views
A 100.0 gram sample of iron at 80.0 degrees Celsius was placed in 150 grams of water at 20.5 degrees Celsius. What was the final
1 answer
427 views
the amount of heat when 65g of water at 100c until it cools to 37c
2 answers
492 views
Which of the following sentences contains a verb in the simple past tense?
A. I was working overtime for about six months. B. She
6 answers
622 views
what equation represents the relationship of perimeter of a square varies directly as the length of it's side ?
3 answers
1,087 views
Which nutrient functions BOTH as an enzymatic cofactor and as a stabilizer of ribosomes and nucleic acids?
a) potassium b)
1 answer
726 views
a large 1.5 x 10^6liter tank contains water polluted with lead (II) nitrate at a molarity concentraion of
2.5 x 10^-6 M to the
5 answers
782 views
What is the pH of a solution that consists of 0.50M H2C6H6O6(ascorbic acid) and 0.75M NaHC6H6O6(sodium ascorbate)? for ascorbic
3 answers
2,171 views
Two blocks, A and B (with mass 50 kg and 100 kg, respectively), are connected by a string, as shown in the figure below. The
3 answers
1,476 views
If the greatest potential energy is 100J will the kinetic energy of the object ever reach 100J?
4 answers
1,260 views
4x + 3(29-x) = 100
please show work
1 answer
277 views
the wind blows with a force of 425N north on a sail boat, while the water exerts a force of 325N west on the sailboat. Find the
2 answers
626 views
If the density of copper is 8.92 g/ml what is the % error?
1 answer
293 views
A golf ball is dropped from rest from a height of 8.20 m. It hits the pavement, then bounces back up, rising just 5.40 m before
4 answers
2,143 views
Stones are thrown horizontally with the same velocity from the tops of two different buildings. One stone lands twice as far
2 answers
763 views
A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 0.58 s
3 answers
1,004 views
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