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Dave
Questions and answers by
Dave
, page 2
Questions (497)
Which of the following nitrogen oxide molecules and related ions is/are diamagnetic and has/have more than two charge-minimized
4 answers
922 views
dangling modifiers to paint one's house frequently one must do it oneself
All homeowners almost try to paint at one time or
1 answer
323 views
145.20=6.00+6.00(1+x)/ (.10-x)
Solve for X
1 answer
231 views
6.00+6.00(1+x)/(.10-x)=145.20
solve for x.
1 answer
230 views
Driving in your car with a constant speed of 12 m/s, you encounter a bump in the road that has a circular cross section. If the
3 answers
831 views
A company has a $150,000 invoice that is due in 60 days with a 2% discount if paid in 10. The company can invest the 2% or $3000
1 answer
985 views
Hi, In this task for our school, we were requested to investigate a method for testing the amount of caffeine content in coffee.
2 answers
501 views
An electron is accelerated horizontally from rest in a television picture tube by a potential difference
of 1.00 × 104 V. (a)
2 answers
585 views
A tank is fillwed with 0.7m of water, a hole at the bottum of the tank with a radius of 0.001m is opened. At the same time,
1 answer
501 views
Is there a good online source of information to compare and contrast the initial formation of two states—Virginia and
1 answer
505 views
If the price of electrical enegy is $0.10 per kilowatt *hour, find the cost of using electrical energy to heat the water in a
5 answers
2,408 views
Need an answer to this Calculus Question. I keep getting this type of question wrong. Thanks.
Differentiate the Function: y =
2 answers
1,187 views
With what speed must a muon travel so that its correct (relativistic) momentum is 8.0 percent greater than the value that would
1 answer
368 views
how do i set this problem up?
Find tan (s + t) given that sin s = 1/4, with s in quadrant 2, and sin t = -1/2, with t in quadrant
2 answers
618 views
How do i set this trig problem up? PLEASE help me.
Find tan (s + t) given that sin s = 1/4, with s in quadrant 2, and sin t =
1 answer
431 views
The van der waals equation incorporates corrections to the ideal gas in order to account for the properties of real gases one of
4 answers
2,237 views
for following reaction at equilibrium if we increase the reaction temperature the equilibrium will
2SO3(g)<-->2SO2(g)+O2(g)(delta
3 answers
935 views
Which of the following is a true statement about chemical equilibria in general
A.there is only one set of equilibrium
4 answers
1,910 views
the van der waals equation incorperates coreections for the ideal gas law in order to account for the properties of real gases.
4 answers
1,628 views
How do you find the vertical and horizontal assymptotes of the graph of the rational function?
f(x)= 3x^2-5x+2/6x^2-5x+1 f(x)=
2 answers
511 views
Find the equation of the straight line that passes through the points (−1, 5) and (5, −1). Find the coordinates of the point
1 answer
439 views
: PROGRAM: PYTHAG : Prompt A, B :Fix 2
�ã : (A2 +B2) �¨ C :Disp "C=",C : Float Choose the three true options concerning this
2 answers
527 views
function y = 4-2(2t+pi/2), where t is measured in radians.
A.choose one option which gives the value of the function when t=pi
1 answer
438 views
An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up
3 answers
918 views
How do I find the x intercepts of the parabola y=x^2-6x-7?
Thanks
4 answers
435 views
Hi,how do I find both solutions of the equation cos41 = 0.35 between degrees 0 and 360?
Many thanks
1 answer
396 views
A 2.9 kg body is at rest on a frictionless horizontal air track when a horizontal force F acting in the positive direction of an
3 answers
1,617 views
I need a home test corrected before I turn it in on Monday. Can anyone help?
1 answer
427 views
How would I calculate the area of a sector of a circle with radius 2 m that subtends an angle pi/3
3 answers
1,294 views
2x+2=8
Solve for x
3 answers
306 views
The limit as x approaches infinity of (e^x+x)^(1/x). I got that it diverges, but I'm not sure if I made a mistake.
My work:
1 answer
500 views
The electron in the n = 5 level of a hydrogen atom emits a photon with a wavelength of 1280 nm. To what energy level does the
7 answers
3,157 views
If the acceleration gravity is 1.6m/2 on the moon and you weigh 539 N on earth, how much do weigh on the moon?
2 answers
643 views
Why do Oxygenated fuels contain less energy than hydrocarbons?
1 answer
300 views
A student dissolved 4.00 g of Co(NO3)2 in enough water to make 100. mL of stock solution. He took 4.00 mL of the stock solution
6 answers
8,972 views
How would you read these two formulas? The 1/4 and 1/6 are throwing me off. These are example problems from what I need to do.
Va
1 answer
273 views
find function value f(x)=x
1 answer
320 views
Reduce each rational expression
x^3-4xy^2/3x^3-2x^2y-8xy^2
2 answers
541 views
Hi: I need help with the following physics problem. Can you explain it to me? Thank you,
The fastest measured pitched baseball
1 answer
427 views
A large boulder is ejected vertically upward from a volcano with an initial speed of 41.0 . Air resistance may be ignored.
3 answers
565 views
While shopping, Jill spent six times as much as Nan. If they spent a total of $112, how much did each person spend?
3 answers
1,168 views
A tugboat can go 10 miles upstream in the same time as it can go 15 miles downstream. If the tugboat goes 12 miles per hour in
1 answer
392 views
A 2.50 gram sample of bronze was dissolved in sulfuric acid. The copper in the sample reacted with sulfuric acid to form copper
4 answers
1,986 views
Acetic acid (CH3COOH) reacts with isopentyl alcohol (C5H12O) to form isopentyl acetate (C7H14O2), a fragrant substance with the
1 answer
665 views
Acetic acid (CH3COOH) reacts with isopentyl alcohol (C5H12O) to form isopentyl acetate (C7H14O2), a fragrant substance with the
4 answers
1,403 views
You weigh 585N on Earth, what is your mass? What do you weigh on the moon id g is 1.60m/s2
1 answer
511 views
You observe a plane approaching overhead and assume that its speed is 700 miles per hour. The angle of elevation of the plane is
2 answers
1,278 views
The mean starting salary for graduates in the spring of 2004 was $36,280. Assume that the distribution of starting salaries
4 answers
1,416 views
What does the word anti mean?
My answer- is opposed to something????? Please help me
2 answers
586 views
Your manager has asked that you reach out to three senior leaders in the organization to build a better understanding of their
1 answer
388 views
If ∆ ABC ~ ∆ DEF, BC = 12 cm, EF = 10 cm, and AC = 18 cm, find DF.
2 answers
828 views
blocks A and B weigh 10 lb and 40 lb,
respectively. A and B extend over a fixed drum, one on reach side. Determine the
2 answers
761 views
A child of mass 40.0 kg is swinging on a swing with ropes of length 4.0 m. How long does it take the child to swing from the
4 answers
1,316 views
Find the speed of a pendulum bob at the bottom of its swing if its initial displacement is 5 degrees and its period is 2 s.
3 answers
419 views
(R=restaurant)
If R1 is 480-8t-0.8t^2 and R2 is 254+0.78t, how would I write a function (R3)that represents the total sales for
1 answer
373 views
Please Help!
(R=restaurant) If R1 is 480-8t-0.8t^2 and R2 is 254+0.78t, how would I write a function (R3)that represents the
1 answer
352 views
d/dx (x)(e^xy)(cos2x).
Product rule lets me take the derivative of f(x)g(x). But three functions?
1 answer
296 views
Can someone please help me to answer the following question? The question below has four choices, but only one correct answer.
4 answers
781 views
My problem I have involves a method that requires using the quadratic equations that comes from India. Here the problem that I
3 answers
647 views
In this equation 4(x^2 – 8x) = 4(13), what would the coefficient of x^2 be in this case? Would this be correct 4x1=4? If not,
6 answers
526 views
I do not know how to answer this question. Would someone please help me with each of the four question below? Thank you.
Question
2 answers
1,225 views
Could someone please describe two main differences between classical and empirical probabilities.
1 answer
379 views
Having trouble with these pairs of numbers (20,21,29) - (28,45,53) I am supposed to develop a Pythagorean triple. Here is that I
3 answers
823 views
Does anyone know how can I apply the Pythagorean Theorem to real world situations.
3 answers
427 views
I need someone to help explain how this math problem works. I am not sure how to convert this fraction below to arrive at 100.8
5 answers
488 views
do adult men go out to dinner alone more than adult women and what is the percentage of men versus women women dine alone?
1 answer
359 views
The initial kinetic energy imparted to a 0.1 kg bullet is 1036 J. The acceleration of gravity is 9.81 m/s2 . Neglecting air
3 answers
2,461 views
A block of mass 5 kg, which has an initial
speed of 3 m/s at time t = 0, slides on a horizontal surface. Find the magnitude of
2 answers
589 views
A 1760 kg car accelerates uniformly from rest to 8.8 m/s in 4.52 s.
Find the work done on the car in this time. Answer in units
1 answer
372 views
Rosie (mass 58 kg) pushes a box with a horizontal force of 120 N (26.976 lb) at a speed 25 m/min. What is Rosie’s power
2 answers
677 views
Part 1
You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 10000 N on a cannon
1 answer
665 views
. Hay una variedad de las bebidas y los postres deliciosos también
My teacher marked that sentence down, and according to her
1 answer
411 views
Answer the questions negatively, using the imperfect tense. Make sure to include the direct object pronoun when needed. Follow
4 answers
7,432 views
I need a step-by-step limit definition of derivative for y = ln(x).
1 answer
292 views
I'm asked to find the shortest wavelength photon emitted for the paschen series for the hydrogen atom. I used the Rydberg
2 answers
769 views
x+(xtimes.15)=1725
1 answer
285 views
What is the probability without replacement of drawing at least one ten (52 card deck)?
2 answers
567 views
Add fraction and mixed numbers and reduce to lowest term
9 2/3 3 2/5 3/4 Can someone explain how to solve?
2 answers
516 views
Why are the quadrants situated and numbered the way they are.What is the purpose.
1 answer
355 views
The Roper Organization conducted identical surveys 5 years apart. One question asked of women was Are most men basically kind,
2 answers
739 views
Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 5.3 g of iron are to be dissolved in 1.7 M HCl. What is
3 answers
2,111 views
From a 1M Tris solution, how is a 400ml of 0.2 M Tris prepared? I have no idea where to start
1 answer
1,063 views
A ball, initially at y = 0, is thrown straight down and takes 1.40 s to move 13.8 m in the - y direction. Calculate the initial
1 answer
383 views
1.If a stock's return has a large standard deviation, that suggests the stock has little risk is tru or false.
2.If the return on
1 answer
486 views
find the slope of the tangent line to the graph of f at the given point. Graph f and the tangen line.
9. f(x) = 3x +5 at (1.8)
1 answer
394 views
A container of hot water at 80 deg C cools to 79 deg C in 15 seconds when it is placed in a room that is at 20 deg C. Use
1 answer
509 views
A container of hot water at 80 deg C cools to 79 deg C in 15 seconds when it is placed in a room that is at 20 deg C. Use
3 answers
508 views
1. How much potential energy does a 5kg block have if it is 2m above the ground?
2. What is the mass of an object that has 40J of
7 answers
1,777 views
If HOCl has a Ka=3.2*10^-12, what is the pH of 0.1M KOCl?
2 answers
812 views
Ten rabbits are riding in wagons. Two rabbits sit in each wagon. How many wagons are there?
Three jump out of the wagons. How
2 answers
528 views
How many milliliters of a 110mL solution of 1.5 M AlCl3 must be used to make 70mL of a solution that has a concentration of 0.2M
2 answers
789 views
A disk and a ring, both of mass and radius, are placed at the bottom of an incline and allowed to roll down. Give an expression
1 answer
400 views
The population of a country was 8.4 million people in 2000. Three years later, the population of the same nation was 9.3 million
3 answers
1,735 views
I just need help with the set up of this problem, that's where I'm getting lost.
A mining company operates two coal mines, M1 and
4 answers
514 views
you have four $5.00 bills. You buy a shirt for $10.00 What fraction of money do you have left. Use equivalent fraction.
1 answer
361 views
you have four $5.00 bills. You buy a shirt for $10.00 What fraction of money do you have left. Use equivalent fraction.
3 answers
521 views
A tin can is filled with water to a depth of 50 cm. A hole 16 cm above the bottom of the can produces a stream of water that is
1 answer
474 views
A horizontal pipe carries oil whose coefficient of viscosity is 0.00010 ns/ m^{2}}. The diameter of the pipe is 5.5 cm, and its
2 answers
581 views
A hot-air balloon plus cargo has a mass of 1740 {\rm kg} and a volume of 12030 {\rm m^3}. The balloon is floating at a constant
1 answer
648 views
A hot-air balloon plus cargo has a mass of 1740 {\rm kg} and a volume of 12030 {\rm m^3}. The balloon is floating at a constant
2 answers
637 views
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