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Rob

Questions (226)

prove that 5x - 7 - sin3x = 0 has at least one zero and prove that it has exactly one real zero.How am I supposed to show my
1. 1 answer
2. 676 views
One gram of water changes from liquid to solid at a constant pressure of one atmosphere and a constant temperature of 0°C. In
1. 1 answer
2. 592 views
Random variables X and Y are both normally distributed with mean 100 and standarddeviation 4. It is known that random variable
1. 0 answers
2. 631 views
How much energy is associated with a photon in the gamma ray region of the spectrum with a frequency of 6.6*10^5s^-1
1. 1 answer
2. 447 views
A factory makes automobile parts, 5C7, 1O6 or 3Z0, which are of 5,000 parts, what is the minimum number of parts with the same
1. 2 answers
2. 550 views
10 to the 9-9 power = ? How do you come to the answer =1?
1. 1 answer
2. 338 views
If earths mass were reduced by 1/2 , but its radious satyed the same , how much would your weight change ? Would it also be
1. 1 answer
2. 507 views
a car exerts tractive force, calculate the force available for acceleration
1. 1 answer
2. 383 views
1) A White eye (w) female Drosophila is crossed with diminutive (dm) males. The F1 wild type females are then crossed to the
1. 0 answers
2. 641 views
Express as a single term in simplest form: 5/2- radical 12
1. 1 answer
2. 510 views
List advantages of the Bay of Fundy power plant
1. 2 answers
2. 500 views
In the Kite Runner, why is the story about the sultans included? What is that story about?
1. 1 answer
2. 565 views
Tom Brady passes a football – at a velocity of 50 ft/s at an angle of 40 degrees to the horizontal – toward an intended
1. 1 answer
2. 863 views
You have a tiny slip of paper and a large rectangular wooden block. If you put both of them side-by-side and drop the two to the
1. 2 answers
2. 551 views
You are driving your race car around a circular test track. Which would have a greater effect on the magnitude of your
1. 2 answers
2. 789 views
An object is executing circular orbits of radius 0.5 m. If it completes an orbit every 3 seconds, what is its tangential speed?
1. 1 answer
2. 415 views
nitially, mass one (2.10 kg) has a velocity of 5.90 m/s and mass two (2.80 kg) is at rest. After they collide, mass one emerges
1. 0 answers
2. 619 views
A tennis ball of mass 0.0609 kg is served. It strikes the ground with a velocity of 52.5 m/s (117 mi/h) at an angle of 22.0°
1. 0 answers
2. 560 views
An obstetrician maintains that preterm babies (gestation less than 37 weeks) have a higher variability of birth weight than do
1. 2 answers
2. 603 views
A tennis ball of mass 0.0609 kg is served. It strikes the ground with a velocity of 52.5 m/s (117 mi/h) at an angle of 22.0°
1. 0 answers
2. 540 views
a plane flies due north at 300 mi/h for 3 h then due west at 250 mi/h. If x represents the number of hours the plane is flying
1. 1 answer
2. 630 views
An obstetrician maintains that preterm babies (gestation less than 37 weeks) have a higher variability of birth weight than do
1. 1 answer
2. 721 views
Part 1)A physical therapists wishes to determine whether an exercise program increases flexibility. He measures the flexibility
1. 1 answer
2. 1,021 views
Part 1)Exposure to dust at work can lead to lung disease later in life. In a study of 115 drill and blast workers involved in
1. 1 answer
2. 490 views
If a hot dog vendor offers 18 different condiments; how many condiment combinations are there?
1. 1 answer
2. 414 views
baseball thrown horizontally takes 1.1 seconds to reach the ground. What is the height at which the ball was thrown?
1. 1 answer
2. 788 views
baseball thrown horizontally takes 1.1 seconds to reach the ground. What is the height at which the ball was thrown?
1. 1 answer
2. 412 views
on a planet whose mass is twice that of earth and whose radius is same, with what acceleration will a body fall at sea level?
1. 1 answer
2. 475 views
what is tangential velocity of the earth as it travels in its orbit around the sun?
1. 1 answer
2. 668 views
factor completely 3y^3 - 12y
1. 1 answer
2. 430 views
Pharmaceutical drugs have an inelastic demand, and computers have an elastic demand. Suppose that technological advance doubles
1. 1 answer
2. 1,494 views
Pharmaceutical drugs have an inelastic demand, and computers have an elastic demand. Suppose that technological advance doubles
1. 4 answers
2. 2,382 views
Pharmaceutical drugs have an inelastic demand, and computers have an elastic demand. Suppose that technological advance doubles
1. 1 answer
2. 1,104 views
A gardener has 60 feet of fencing with which to enclose a garden adjacent to a long existing wall. The gardener will use the
1. 1 answer
2. 951 views
If the sides perpendicular to the wall have length x feet, which of the following (A, B, C, or D) represents the area A of the
1. 2 answers
2. 575 views
a small child is sliding down a 25 degree slide at a uniform velocity of 1.0 m/s. If the child weighs 210 N, find the
1. 1 answer
2. 586 views
What expression represents the same value as sin 19(degrees)?
1. 1 answer
2. 549 views
When heated, N2O4 dissociates as follows: N2O4 =2NO2A flask initially contians .560 M N2O4. at this temperature, Kc is 4.00.
1. 2 answers
2. 1,052 views
Latoya has 3/4 of a bag of popcorn. If she eats half of the popcorn at a movie, ho much does she have left?
1. 1 answer
2. 622 views
If Rupert flew 3/16 of the way around the world but George only flew 4/9 as far as Rupert, how far around the world did George
1. 1 answer
2. 462 views
what is the concentration of an aqueous solution when you add 9.58x10^-4 moles of copper nitrate to 42ml of water
1. 1 answer
2. 420 views
Communist Prison CampIn such prisons the total regimen, consisting of physical privation, prolonged interrogation total
1. 3 answers
2. 936 views
in the sentence "He felt hungry and thought about the lunch wrapped in his handkerchief." which are the linking verbs and which
1. 3 answers
2. 893 views
a force 'P' acts on a bodyat an angle theta to a horizontal line 'OX'. P,together with a pull of 1.5kn at 30degrees to, and
1. 0 answers
2. 487 views
Given Circle D, if AC = 16 units, then what is the length of CB?A circle is drawn with center D. Two radii are drawn, AD and DC.
1. 1 answer
2. 675 views
Why does the reaction of (Z)-butenedioic acid (fumaric acid) with 1,3-cyclopentadienegive only one product? I don't know where
1. 1 answer
2. 720 views
find the domain of the functionp(x) = x^2 - 2x + 10
1. 1 answer
2. 360 views
B is the midpoint of Symbol for segment AC.AB=3x-6 BC=2x+2 What is the value of AB? Show your work for credit.
1. 1 answer
2. 641 views
Hello, I'm wondering what the difference is in method when it comes to finding the pH of a weak acid versus finding the pH of a
1. 1 answer
2. 402 views
what is the molarity of a 50% by mass solution of NaOH id the density of the solution is 1.05 g/ml
1. 1 answer
2. 429 views
A water tank has a volume of 100m^3. A square pipe leading to a pump is designed to completely replace all water in 20 minutes.
1. 1 answer
2. 477 views
Using the operations push(E obj),peek(), pop(), empty() give a Java implementation of the method // Reverses the elements in the
1. 1 answer
2. 511 views
This limit represents the derivative of some function f at some number a. Select an appropriate f and a.1f(x) = x4, a = 4 f(x) =
1. 0 answers
2. 544 views
A particle moves along a straight line with equation of motion s = f(t), where s is measured in meters and t in seconds. Find
1. 2 answers
2. 1,100 views
Consider the function below.g(x) = 2 - x^3 (a) Find g'(0). (b) Use it to find an equation of the tangent line to the curve y = 2
1. 0 answers
2. 455 views
A little boy is flying a kite. The string of the kite makes an angle of 30 dgrees with the ground. If the height of the kite is
1. 0 answers
2. 1,330 views
A pole with a height of 60 ft. has a shadow of length of 34.64 ft at a particular instant of time. Find the angle of elevation
1. 2 answers
2. 618 views
Do these look right?What shape does an ammonia (NH3) molecule have?trigonal pyramidal In a tetrahedral molecule, how many
1. 1 answer
2. 957 views
factor the expressioncsquared + 10c + 25
1. 1 answer
2. 435 views
csquared + 10c + 25factor the expression...
1. 1 answer
2. 387 views
Here is the source code for the Kitty class:public class Kitty { String name; int age; public Kitty(){ } public void
1. 2 answers
2. 1,622 views
The sides of a square each measures 4 ¾ inches. Find the area of the square as a fraction or mix number. (Do not use decimals)
1. 10 answers
2. 482 views
Are the following sentences punctuated correctly?Although, there is no definite evidence of malignancy, a biopsy should still be
1. 1 answer
2. 488 views
Are the following sentences punctuated correctly?The lung exam showed no rales, rhonchi or wheezes. She has a history of cough,
1. 1 answer
2. 440 views
How do I do radical 7/10... my answer was 4 radical 3 over 6... is that correct?
1. 1 answer
2. 554 views
In which of the following circumstances would a buyer be indifferent about buying a good?a. The amount of consumer surplus the
1. 1 answer
2. 1,111 views
A result of welfare economics is that the equilibrium price of a product is considered to be the best pricebecause it a.
1. 1 answer
2. 1,179 views
hi i was wondering how would you find the equation of a parabola with it's vertex at -2,0, and with no directrix or focus given.
1. 1 answer
2. 496 views
cos2x(2cosx+1)=0x=?
1. 1 answer
2. 614 views
Find the tangent line approximation to 1/x when x=1How do i find tangent line approximations??? my prof hasn't gone over this
1. 3 answers
2. 463 views
If f is decreasing and f(20)=10, which of the following must be incorrect? Explain.a. (f^-1)'(20)=-3 b. (f^-1)'(10)=12 how do i
1. 1 answer
2. 535 views
Given f(x)=2x^3-7 find f^-1(x) and then find f^-1(-2)I though that this meant inverse function. x=2y^3-7 x+7=2y^3 (x+7)/2=y^3
1. 1 answer
2. 519 views
For a period of time as an alligator grows, its mass is proportional to the cube of its length. When the alligator's length
1. 1 answer
2. 1,390 views
An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the
1. 1 answer
2. 522 views
Ions are electrically charged particles that are formed when certain compounds are dissolved in water. These solutions will
1. 3 answers
2. 1,834 views
List at least two major potential asvantages of power production by fusion rather than by fission.
1. 1 answer
2. 366 views
Explain how redioactive decay has always warmed the Earth from the inside and how nuclear fusion has always warmed the Earth
1. 1 answer
2. 1,510 views
If a pair of carbon atoms were fused, and the product were to emit a beta particle, what element would be produced?
1. 1 answer
2. 755 views
Mixing copper and zinc atoms produces the alloy brass. What would be produced with the fusion of copper and zinc nuclei?
1. 1 answer
2. 846 views
Which process would release energy from gold, fission or fusion? Which would release energy from carbon? From iron?
1. 1 answer
2. 850 views
How many grams of NaOH are present in 5.0 mL of a 1.0% (m/v) NaOH solution?
1. 3 answers
2. 5,067 views
Who was the scientist that invented the uncertainty principle ?Was it Heisenberg?
1. 1 answer
2. 396 views
An electron and a proton are traveling at the same speed. Which one has the longer wavelength?
1. 1 answer
2. 538 views
In the photoelectric effect, what determines the number of ejected electrons?
1. 1 answer
2. 498 views
In the photoelectric effect, what determines the kinetic energy of the ejected electrons?
1. 1 answer
2. 482 views
Which laser beam carries more energy per photon?red, yellow, green, violet? I think red. Am I right?
1. 1 answer
2. 452 views
are there any free downloadable courses that I could teach myself Arabic with? I can't seem to find any good ones.
1. 1 answer
2. 2,336 views
Manganese dioxide reacts with bromide ions to form manganese ions and bromate ions in an acidic aqueous solution. Write the
1. 2 answers
2. 714 views
Calculate the Go for the oxidation of 5 moles of tin in the following balanced reaction.16HCl + 2KMnO4 + 5Sn ---> 5SnCl2 +
1. 3 answers
2. 660 views
For a smal change in x, dx:ds² = dx² + dy² ds = sqrt [(dx² + dy²)] s = INTEGRAL of sqrt [(dx² + dy²)] s = INTEGRAL of
1. 3 answers
2. 1,423 views
I asked this before and did not get a response so I am trying again. (Note, I didn't know how to type the symbol for pi)What is
1. 1 answer
2. 538 views
What is the derivative of:2pi^2r^4 would it simply be 8pi^2r^3? I was thinking the 2pi^2 is simply the equivalent of a constant
1. 0 answers
2. 526 views
Can this be factored:6/5x^1/5 - 12/5x^-4/5 I am trying to find the values for X which will make this equal to zero. My factoring
1. 1 answer
2. 349 views
Can two equipotentials ever cross one another? Explain via analogy to a topographical mapCan two equipotentials be tangent to
1. 0 answers
2. 1,066 views
For a resonance tube apparatus (open ended on one side) with a total tube length of 1.00 meter, on a day when the speed of sound
1. 0 answers
2. 1,400 views
Why should a tuning fork be set into oscillation by striking it with a soft rubber mallet rather than with a hard metal mallet?S
1. 1 answer
2. 1,465 views
Does centripetal force acting on an object in uniform circular motion do work on the object?For work, force must be in the
1. 0 answers
2. 1,256 views
I need to find dq2/dpb and dqb/dpaqa=2500+(600/pb+2)-40pa qb=3000-100pb+(400/pa+5) a and b are subscripts.
1. 0 answers
2. 409 views
Marginal Cost = 30sqroot(x+4) with fixed costs of $1000.Marginal Revenue = 900. find profit or loss from production and sale of
1. 0 answers
2. 1,040 views
demand = (p+1)sqroot(q+1)=1000. Find elasticity of demand at a price of $39 per unit.I am really struggling with this problem is
1. 0 answers
2. 702 views

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