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If 5.30mL of 0.1000 M NaOH solution is needed to just neutralize excess acid after 20.00 mL of 0.1000 M HCl was added to 1.00 g
4 answers
1,837 views
A 50-cm wire placed in an East-West direction is moved horizontally to the North with a speed of 2 m/s. The Horizontal and
3 answers
1,015 views
A 200-loop coil of cross sectional area 8.5 lies in the plane of the paper. Directed out of the plane of the paper is a magnetic
2 answers
1,214 views
A conducting rod whose length is 25 cm is placed on a U-shaped metal wire that has a resistance R of 8 Ù. The wire and the rod
3 answers
1,460 views
Find the base of a triangle whose area is 60in squared and whose height is 6 inches
I did 1/2 bh=A 60=3b so b=60/3 b=20 then
1 answer
385 views
Is the series 1/(n(n+1)) convergent?
n=2 to n=infinity
1 answer
327 views
Is the series 2/ln(n) convergent or divergent?
n=3 to n=infinity
1 answer
337 views
does the sum 3/(2^(n)-1) converge or diverge?
n=1--->infinity
1 answer
1,059 views
A restaurant donates 2 cans of soup to charity for every 9 bowls of soup it sells. The number of cans of soup donated by the
1 answer
224 views
Here is the height, in inches, of 10 randomly selected members of the girls' dance team and 10 randomly selected of the girls'
2 answers
544 views
Here is the height, in inches, of 10 randomly selected members of the girls' dance team and 10 randomly selected of the girls'
3 answers
644 views
Here is the height, in inches, of 10 randomly selected members of the girls' dance team and 10 randomly selected of the girls'
5 answers
702 views
The Boeing 757-200 ER airliner carries 200 passengers and has doors with a height of 72 inches. Heights of men are normally
4 answers
2,938 views
Convert to a rectangular equation by eliminating the parameter:
x=sin(theta) y=(cos theta)^2
1 answer
384 views
Find the length of the curve over the given interval:
x=t+1 y=ln cos(t) for t=0 ---> t=pi/4
1 answer
296 views
Find the length of the curve over the given interval:
x=t+1 y=ln cos(t) for t=0 ---> t=pi/4
1 answer
292 views
Convert the curve to an equation in rectangular coordinates:
x=(t+2); y=-2sqrt(t)
3 answers
332 views
Convert the polar equation to rectangular coordinates: r = 2-cos theta
...and find all points of vertical and horizontal
3 answers
1,044 views
Find the arc length of the curve described by the parametric equation over the given interval:
x=t^(2) + 1 y=2t - 3 --> 0<t<1
1 answer
476 views
On what intervals of t is the curve described by the given parametric equation concave up? Concave down?
x=t^2; y=t^(3) + 3t I am
1 answer
332 views
Find the arc length of the curve described by the parametric equation over the given interval:
x=t^(2) + 1 y=2t - 3 0<t<1
3 answers
782 views
For an Indian Youth Environment camp essay why should someone be chosen to go?
1 answer
322 views
What is the probability that 10 of 100 apples will be < 130 g? mean=173 std deviation=34?
1 answer
354 views
The pK3 of formic acid is 3.75
A)what is the pH of a buffer in which formic acid and sodium formate have equimolar concentration?
6 answers
2,268 views
The pH of blood is 7.4 and that of saliva is 6.4. what is the difference in pH between these two solutions? How much more
4 answers
2,474 views
Arrange the following 0.10M solutions in order of increasing pH:
a. Nacl b. NH4CL C. HCL D. NaCH3CO2 e. KOH
4 answers
7,009 views
You have a ten question multiple choice test in your next class and you did not study at all. Each question has four choices and
3 answers
733 views
Describe the following surface and give traces if available.
x^(2)-4z^(2)=4
3 answers
332 views
Find the center (h,k) and radius r of the circle and then use these to (a) graph the circle and (b) find the intercepts, if any.
2 answers
650 views
Given u=3i-2j+k,v=2i-4j-3k, w=-i+2j+2k,
1 Find a unit vector normal to the plane containing v and w. 2 Find the volume of the
2 answers
881 views
Describe the surface and give traces:
x = y^2 - 4z^2
1 answer
311 views
Three forces with magnitudes 75 pound, 100 lb, and 125 pound act on an object at angles of 30 degrees, -45 degrees, and 120
1 answer
670 views
Does the limit of xy/(x^2 + y^2) exist as (x,y)--->(0,0)?
Why or why not??
1 answer
395 views
Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about x =
1 answer
649 views
A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 for g and 3.14 for π. If you
3 answers
2,010 views
In a vacuum, two particles have charges of q1 and q2, where q1 = +3.8C. They are separated by a distance of 0.37 m, and particle
1 answer
1,076 views
-10 + 6g = 110
1 answer
214 views
relative maxima and relative minima
2x^2+ 4000/x +10
2 answers
490 views
A research balloon of total mass 225 kg is descending vertically with a downward acceleration of 1.4 m/s2. How much ballast must
2 answers
566 views
How do I work out:if life expectancy of male is 78.9 and female is 83.6. Life expectancy is % lower than female. What is formula
1 answer
354 views
The manager of a large apartment complex knows from experience that 100 units will be occupied if the rent is 425 dollars per
3 answers
1,120 views
Use Newton's method to approximate the positive value of x which satisfies x=2.3cosx
Let x0=1 be the initial approximation. Find
2 answers
976 views
Estimate the area under the graph of f(x)= x^2 + 3 x from x=1 to x=10 using the areas of 3 rectangles of equal width, with
2 answers
823 views
Estimate the area under the graph of
f(x)=sin(pix) from x=0 to x=1 using the areas of 3 rectangles of equal width, with heights
3 answers
473 views
Estimate the area under the graph of
f(x)=sin(pix) from x=0 to x=1 using the areas of 3 rectangles of equal width, with heights
3 answers
723 views
Legislation whose tangible benefits are targeted solely at a particular legislator's
3 answers
471 views
You place a mirror on the ground 6 feet from the lamppost. you move back 3 feet and see the top of the lamppost in the mirror.
4 answers
2,825 views
prove or disprove cos(x-y)=cos(x)-cos(y)
1 answer
392 views
what is the solution of 3x^+27=0
3 answers
252 views
A bicyclist traveling at 8 m/s rides around an unbanked curve. The coefficient of friction (is this static or kinetic friction?)
1 answer
830 views
A test tube in a centrifuge is pivoted so that it swings out horizontally as the machine builds up speed. If the bottom of the
2 answers
551 views
three circles are manually tangent externally. their centers form a triangle whose sides are of length 8, 9, 13. find the total
2 answers
902 views
Determine the equation of g(x) that results from translating the function g(x)f(x)=x^2 +3 upward 10 units
1) g(x)=(x+13)^2 2)
1 answer
433 views
on my exam review, i have this question for composition of functions
Given f(x)=3x^2+x-1, g(x)=2cos(x), determine the values of x
1 answer
427 views
write and row reduce the augmented matrix to find the general solution:
x - 2y + 13 = 0 y - 4x = 17
2 answers
495 views
write and row reduce the augmented matrix to find the general solution:
2x - z = 2 6x + 5y + 3z = 7 2x - y = 4
3 answers
505 views
Write in parametric form the equation of the line that is perpendicular to r=(2i + 4j) + (i - 2j)t and goes through (1,0)
3 answers
600 views
I was wondering if my answers are correct. Thanks in advance.
1. A boy pushes down on a car rolling horizontally down the road.
7 answers
8,878 views
Solve dy/dx = y/(2y-x) using rational substitution (using v=y/x) with the initial condition y(0)=1.
I solved this problem and
2 answers
703 views
how to calculate the amount of heat in calories absorbed when 50.0 g of water at 20 degrees C spreads over your skin and warms
2 answers
1,312 views
May you please edit this essay?
Holden Caulfield in “Catcher in the Rye”, seems to be obsessed with mortality and youthful
2 answers
539 views
How would a $10.00 compact fluorescent light bulb (15 W) be an overall money saver compared to an incandescent light bulb (60 W)
1 answer
695 views
Which of the following samples has the highest specific heat capacity?
a) A 100 kg sample of lead requires 13 000 J to increase
4 answers
2,247 views
How would a $10.00 compact fluorescent light bulb (15 W) be an overall money saver compared to an incandescent light bulb (60 W)
5 answers
2,110 views
If equal amounts of heat are added to equal masses of silver and copper, both at the same initial temperature, which will reach
7 answers
6,065 views
how could you determine the efficiency with which the mechanical energy of a pendulum is conserved?
1 answer
432 views
Your friend comes across a good deal to purchase a gold ring. She asks you for advice for you to test the ring. The ring has a
4 answers
1,305 views
A 20.0 kg block is being pushed forward on a flat surface with a force of magnitude 45.0 N against a frictional force of 13.0 N
T
3 answers
1,774 views
1. If a bat emits 10 sounds in 5 seconds, what is the frequency of the bat's vocal outbursts (rounded to first decimal place)
My
4 answers
3,232 views
I am stuck with both of these questions. Thanks in advanced!
1. If one tone has a frequency of 110 Hz and another tone is played
3 answers
540 views
1. In a standing wave, the medium at the tip of a loop is
a) showing destructive interference b) not moving c) at the original
1 answer
1,020 views
1. In a standing wave, the medium at the tip of a loop is
a) showing destructive interference b) not moving c) at the original
6 answers
2,901 views
I am not too sure if my answers are correct. Here are the questions:
1. A student standing near a brick wall claps her hands and
4 answers
2,823 views
1. A person is listening to a new instrument capable of sounds ranging from 10 dB to 150 dB and with frequencies from 12 Hz to
3 answers
1,801 views
I would like to know if my answer is correct. Thanks in advanced!
A person with their head sideways in the water sees a beaver
1 answer
724 views
I would like to know if my answer is correct. Thanks in advanced!
A person with their head sideways in the water sees a beaver
4 answers
1,987 views
thanks in advanced!
A guitar emits a 440 Hz tone. How far apart are the crests in room temperature air (20 degrees celsius)? How
3 answers
1,706 views
A police officer with good ears hears an approaching motorcycle. The engine sound he eats as the bike approached is 195 Hz.
a) Is
2 answers
1,030 views
A bag of chocolate candies has the following colors: 5 yellow, 7 green, 8 red, 5 orange, and 4 brown. What is the probability of
2 answers
575 views
According to a publisher's records, 20% of the books published break even, 30% lose $1000, 25% lose $10,000, and 25% earn
2 answers
875 views
A microscopic worm is eating its way around the inside of a spherical apple of radium 6 cm. What is the probability that the
2 answers
765 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?
my answer: I got 10
1 answer
666 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?
my answer: I got 10
1 answer
660 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?
my answer: I got 10
3 answers
1,033 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?
a) 0.05 mm b) 5.0 mm
2 answers
542 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?
a) 0.05 mm b) 5.0 mm
2 answers
537 views
When a tuning fork of unknown frequency is sounded simultaneously with a 512 Hz tuning fork, 20 beats are heard in 4.0 seconds.
4 answers
1,237 views
1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?
a) 0.05 mm b) 5.0 mm
2 answers
886 views
A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?
4 answers
1,910 views
Does the crest of a wave usually have a larger amplitude than the trough?
3 answers
678 views
1. A 40Ω , 20Ω and 60Ω resistor is connected in a parallel circuit.
Which resistor would have the greatest current passing
4 answers
2,381 views
1. For a bar magnet, the magnetic field lines point
a. towards the South pole. b. towards the North pole. c. always towards the
3 answers
1,366 views
5. A magnetic field map shows
a. the direction of the magnetic field. b. a few representational field lines. c. relative strength
2 answers
1,547 views
A movie theater wants to determine the price per ticket that should be charged in order to maximize its
revenue. The theater can
3 answers
1,315 views
If f(x1)>f(x2) for every x1>x2, then what is the behaviour of f(x)?
I believe that the answer is that f(x) is increasing but I do
1 answer
382 views
If f(x1)>f(x2) for every x1>x2 then what is the behaviour of f(x)?
1 answer
362 views
determine f" if f(x)=sqrt(x^3+2)
1 answer
312 views
A brand new stock is also called an initial public offering. In this model, the period immediately after the stock is issued
3 answers
510 views
A brand new stock is also called an initial public offering. In this model, the period immediately after the stock is issued
3 answers
563 views
what is the difference between an average rate of water flow and an instantaneous rate of water flow?
1 answer
474 views
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