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George
Questions and answers by
George
, page 4
Questions (615)
What is the molarity of 24.5 grams of sulfuric acid dissolved in a liter of water?
1 answer
322 views
At time t in seconds, a particle's distance s(t), in centimeters, from a point is given by s(t) = 4 + 3 sin t. What is the
2 answers
468 views
At time t in seconds, a particle's distance s(t), in centimeters, from a point is given by s(t) = 4 + 3 sin t. What is the
2 answers
592 views
The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming
2 answers
857 views
A flush tank on a toilet is rectangular with dimensions of 21 inches by 6.5 inches and contain water to a depth of 12 inches.
3 answers
470 views
Current is applied to a molten mixture of CuF, ZnCl2, and AlBr3.
What is produced at the cathode? a)F2 b)Al c)Cu d)Zn e)Cl2 f)Br2
7 answers
7,263 views
What is the moment of inertia of a solid cylinder of radius R=0.9550m,thickness t= 0.015m, and total mass M= 3.565 kg?
4 answers
1,262 views
how many grams of lead are in a 3/4 inch ball of lead
1 answer
334 views
Sam has a savings account that increased in value over 12 month period from $8765.00 to $9006.04. He made no deposits or
1 answer
424 views
My question is 'what does the area under the curve represent?' it's a Maxwell-Boltzmann curve.
My first idea was the number of
2 answers
759 views
A child’s toy consists of plastic attached to
a spring. The spring is compressed against the floor a distance of 1.48 cm, and
1 answer
796 views
wave is modeled by the function ...
h(t) = 3cos(p/10)*t What is the period of the wave (T) *frequency (F) is defined as the
2 answers
563 views
A bean sprout grows 3 inches in its first week, 2 inches in its second week, and 1.333 inches in its third week. If the sprout's
4 answers
798 views
How do you find the exact value of Sin(13pi)?
3 answers
1,957 views
Let Y be a random number between 0 and 1 produced by the idealized uniform random number generator with density curve pictured
1 answer
900 views
Calculate the expected value and standard deviation of X, the number of on the job accidents:
Accidents 0,1 2 Probability .5, ?,
1 answer
434 views
A girl coasts down a hill on a sled, reaching level ground at the bottom with a speed of 6.7 m/s. The coefficient of kinetic
2 answers
981 views
What is the volume in cubic feet, of a box that is 3ft long, 8th wide, and 16ft high?
5 answers
677 views
What force do the blades of a 4200 kg helicopter exert on the air when the helicopter is dropping at 23 m/s with speed
1 answer
1,166 views
I have been trying to verify the below identity. I have been at it for hours, can anyone please help?
1+ cos(theta)/Cos(theta) =
1 answer
395 views
1+ cos(theta)/Cos(theta) = tan^2(theta)/sec(theta)-1
I am having trouble understanding how this is verified by the previous
1 answer
434 views
Oh now I see your point. I am sorry I should have stated this before. How do I verify that tan^2(theta)/Sec(theta)-1 is somehow
1 answer
336 views
After a reflection over the x-axis I have to find the coordinates of A1, B1, C1
I am having trouble with b1. A(1,4) B(3,-2)
4 answers
646 views
I am having a hard time with economics - we just started in my social studies class. Can I have help with my homework, please?
1.
10 answers
1,754 views
5p+2q=3
7p+2q=11
1 answer
168 views
what is the arccos(2)?
I have tried to use the unit circle but I do not understand this :/.
1 answer
300 views
rewrite the following expression as an algebraic expression in x: cos(arcsin x)
I have made X to be X/1 but from there I am lost.
3 answers
789 views
Prove or disprove the following identity.
cos(-x) - sin(-x) = cos(x) + sin(x)
1 answer
397 views
Michaels car has a 18.0 gallon tank. If the tank has 5.5 gallons what fraction of the tank is full?
4 answers
651 views
Convert the equation y=5 to polar form.
3 answers
412 views
The supply office for a large construction firm has three welding units of Brand A and three welding units that are not Brand A
1 answer
480 views
Thank you STEVE!!!!!
Suppose that Cos (theta) = 1/square root 2 if 0<equal to theta , pi/2 then sin(theta) = tan (theta) = If
3 answers
978 views
I asked this yesterday but I was told my answer was incorrect by my professor.
ln x^5 - ln x^2 = 3 solve for the unknown. I have
1 answer
399 views
A baseball is dropped from a tall building and takes 4.1 seconds to hit the ground. From what height was the ball dropped?
3 answers
956 views
Rational exponents 8^2/3?
2 answers
592 views
negative exponents 16^-3/4?
1 answer
275 views
Test Axioms, What are the diagonals of a rectangle?
1 answer
294 views
the total mass-energy of one pound of anything is about how many joules
3 answers
972 views
If the car has a mass of 0.4 kg, the ratio of height to width of the ramp is 13/125, the initial displacement is 1.9 m, and the
3 answers
605 views
Chromatography relies on the differences in polarity between the compound, the mobile phase and the stationary phase. In your
1 answer
472 views
The eggplant ave. bus passes max's house every 8 mins. the cabb creek bus passes it every 12 mins. the last they passed by
6 answers
1,048 views
In terms of impulse and momentum, why are airbags in automobiles a good idea?
A.)Airbags actually do not help if a car is in an
1 answer
705 views
A car with a mass of 700 kg moves at 18 m/s. What braking force is needed to bring the car to a halt in 10 s?
1 answer
475 views
What is the momentum of a 50 kg carton that slides at 2 m/s across an icy surface?
The sliding carton skids onto a rough surface
3 answers
1,728 views
X= log base 3 1/27
5 answers
1,944 views
find the first 3 terms in the expansion of (x+4)(1+3x)^-2 as a series in ascending powers.
I expanded the second bracket using
2 answers
787 views
What is the pH of a 0.77M solution of methylamin at 25 degree C? CH3NH2, Kb= 4.4X10-4?
How do I set this up to get the answer?
1 answer
400 views
Calculate the work done when a 18 N force pushes a cart 2.5 m.
1 answer
385 views
A boulder is raised above the ground so that the gravitational potential energy relative to the ground is 360 J. Then it is
1 answer
470 views
If you do 110 J of work to elevate a bucket of water, how much energy did you add to the gravitational field?
1 answer
402 views
What would the gravitational potential energy be if the bucket were raised six times as high?
1 answer
321 views
Normal price of mini-scooters are $120 per scooters, ABC estimates 400,000 scooters to be sold for Year 2013.
Material costs are
1 answer
373 views
Normal price of mini-scooters are $120 per scooters, ABC estimates 400,000 scooters to be sold for Year 2013.
Material costs are
1 answer
364 views
How many grams of Ni would be electroplated if a constant current of 7.2 amperes is passed through a solution of NiSO4 for 90.0
5 answers
8,827 views
A certain car is capable only of accelerat
ing at 3.0m/s 2 , braking (decelerating) at 5.0m/s 2 , and moving at constant
2 answers
921 views
How many moles of H2O are produced when 6 moles of o2 is consumed in burning meyhyl Alchohol
1 answer
452 views
If a salesman sold 2 cars in his first month, 8 cars in his second month, and 32 cars in his third month, using the same
1 answer
415 views
Calculate the force of gravity between a human child (mass = 38 kg) and the planet Mars (mass = 6.4 1023 kg), when Mars is at
1 answer
374 views
Calculate the force of gravity between a newborn baby of mass 4 kg and the obstetrician of mass 80 kg, who is 0.1 m from the
1 answer
483 views
Which exerts more gravitational force on the baby, Mars or the obstetrician, given that Mars has a mass of 6.4 1023 kg and is 8.
1 answer
629 views
A speaker talking about the benefits of cosmetic surgery to an audience primarily of women is appealing to which level of needs
14 answers
891 views
Consider the titration of 50 mL of 0.250 M HCl with 0.1250 M NaOH. Calculate the pH of the resulting solution after the
2 answers
618 views
A jar contains 1 blue crayon, 1 green crayon, 1 black crayon, and 1 red crayon. You grab 1 crayon without looking. Find the
1 answer
456 views
what is the rate of a first-order reaction that has a reactant concentration of 1.1M and a rate constant of 0.14/s?
2 answers
1,165 views
Write a program reads the city names and respective gas prices into 2 single-subscripted arrays in your program - one of type
1 answer
614 views
I am completely lost...please anyone can anyone help?
x = 2+y x and 2 are in inches then it says solution y=x(in) - a(in)
1 answer
294 views
Can someone check my work?
the problem is: x=2+3/y and I have to solve for y I get rid of the denominator y and multiply it with
3 answers
916 views
I am having issues drawing the lewis structure for this...can anyone explain?
CHCCH*subscript2*CH0
1 answer
314 views
I am also having issues for this structure as well.
[CH*subscript3*CH*subscript2*C(CH*subscript3*)CH(CH*subscript3*)CHCH*suscript
1 answer
342 views
I was asked this question for homework but I don't even know where to begin. It has 3 parts to answer.
1) add all lone pairs and
1 answer
411 views
A 5 foot tall woman stands 15 ft from a statue. She must look up at an angle of 60° to see the top of the statue. How tall is
3 answers
2,065 views
Twenty minutes after being launched, a hot-air balloon has risen to an altitude of 300 m. The pilot can still see the starting
3 answers
771 views
A family vacationed at a beach 120 mi east and 30 mi south of their home. Find the distance and the direction from their home to
2 answers
531 views
A surveyor measuring the tallest tree in a park is 100ft from the tree. His angle-measuring device is 5 ft above the ground. The
4 answers
1,277 views
Explain why sinx degrees= cos(90-x)degrees. include a diagram with your explanation.
2 answers
932 views
A regular pentagon with radius 5inches.
1 answer
354 views
A regular hexagon with radius 6.2m.
1 answer
317 views
A plane flying 16 degrees west of north at 289mph is flying in air which is moving 32mph at due west. Find the resulting speed
3 answers
472 views
what is the volume of a cylinder with a radius of 1.2 and height of 5.3cm
1 answer
424 views
what shape does a square form when rotated?
1 answer
266 views
what shape does a semi circle form when rotated?
1 answer
428 views
find the volume of a triangular prisim with a=2.3, c=2 and h=1.5
1 answer
338 views
find the area of a regular pentagon with radius 5in
3 answers
1,314 views
find the area of a hexagon with radius 6.2m.
1 answer
265 views
A 5 foot tall woman stands 15ft from a statue. She must look up at an angle of 60 degrees to see the top of the statue. How tall
4 answers
2,226 views
use pie(3.14) to estimate the surface area and volume of a sphere with radius 3cm.
1 answer
374 views
tell whether each of the following points is inside, outside, or on the sphere. A(o, -3,4)B(-1,-1)C(4,-6,-10).
1 answer
288 views
On September 3, 1970 a hailstone with diameter 5.6in fell at Coffeyville, Kansas. It weighed about 0.018Ib/in^3 compared to the
4 answers
1,512 views
Give the dimensions of a cylinder and a sphere that have the same volume.
2 answers
529 views
The density of steel is about 0.28Ib/in^3. could you lift a solid steel ball with radius 4in? whith radius 6in? explain
1 answer
364 views
find the radius of a sphere withh the given property.
A.The number of square meters of a surface area equals the number of cubic
2 answers
509 views
what is the radius of the ball of string to the nearest tenth of a foot?
A. 3.3 B. 6.6 C. 13.2 D. 20.75
1 answer
374 views
Which is the best approximation of the volume of the ball of string?
A. 300ft^3 B. 600ft^3 C. 1,200ft^3 D. 2,400ft^3
1 answer
344 views
A regular pentagonal solid prism has 9cm base edges. A larger, similar solid prism of the same material has 36cm base edges. How
5 answers
4,445 views
Two similar pyramids have laterl area 8ft^2 and 18ft^2. The volume of the smaller pyramid is 32ft^3. Find the volume of the
1 answer
638 views
The slan heights of two similar pyramids are in the ratio 1:5. The volume of the smaller pyramid is 60m^3. What is the volume in
3 answers
659 views
A lawn chair weighs 8Ib. A child's lawn chair has dimensions exactly one half those of the larger chair. How many pounds does
1 answer
435 views
The volume of two similar rectangular prisms are 64cm^3 and 1000cm^3. The surface area of the smaller figure is 112cm^2. What is
3 answers
854 views
Find the missing length.
MG=10cm, NP=4cm, QP= 14cm, MN=____cm
1 answer
361 views
The circumference of the ball of string is 415ft and it weighs 13,0000Ib.
what is the radius of the ball of string to the nearest
1 answer
375 views
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