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Ken
Questions and answers by
Ken
, page 2
Questions (288)
How long a spaceship traveling at a steady speed of 14km/s to reach Jupiter?
1 answer
301 views
How long a spaceship traveling at a steady speed of 14km/s to reach Jupiter?
2 answers
465 views
which of the following integrals results from making the substitution u=x^3 in orer to find (squiggly vertical
1 answer
420 views
can someone help me find the antiderivative of:
f(x)=4x times the squareroot of (1-x^2)
1 answer
296 views
Calculate the age of a plant sample that shows about one-eighth of the carbon 14 of a living sample. The half-life of carbon 14
1 answer
376 views
Simplify each of the following exactly:
(8^(-1000) sqr2^10000)/16^500 log_(8) 2
1 answer
332 views
How do I start an ICE table from the following information: BrCl3(g)+ Cl2(l) -> BrCl5(g) where Kp=7.8*10^-6 and there is
1 answer
438 views
Why did Americans demand written constitutions to define and protect rights?
1 answer
332 views
1. According to the collision theory of chemical reactions:
A. High energy collisions result in few successful reactions as there
3 answers
1,971 views
Name this compound:
[Co(NH3)5Cl]Cl2
3 answers
698 views
*Optimization problem* [I don't know how to get to the answer] Problem: You have a cylindrical can with radius 4cm and height
6 answers
850 views
An object is moving along a circle of radius 5 . When the object is at the point (−4,3) , the y value of its position is
1 answer
373 views
A car of mass 1200kg starts from rest, accelerates uniformly to a speed of 4.0 meters per second in 2.0 seconds and continues
4 answers
1,290 views
CHemical equation showing how NH3 behaves as a base when dissolved in water
3 answers
1,381 views
slope of the line parallel to y=6x-8
3 answers
892 views
A pinhole camera has a small circular aperture of diameter D. Light from distant objects passes through the aperture into an
2 answers
1,211 views
Monochromatic x-rays (λ = 0.166 nm) from a nickel target are incident on a potassium chloride (KCl) crystal surface. The
2 answers
1,278 views
How can I identify the ions present in (NH4)2SO4.FeSO4.6H2O qualitatively?
1 answer
414 views
A baseball is thrown horizontally off a cliff with a speed of 7.3 ms-1. What is the vertical distance, to the nearest tenth of a
1 answer
398 views
solve for the second derivative and set to zero
f"(x) = ((x^2-4)*sin(2x)- [(2x)(1+cos^2(x))]/ ((1+cos^2(x))^2) i don't know how
1 answer
314 views
solve for the second derivative and set to zero
f"(x) = ((x^2-4)*sin(2x)- [(2x)(1+cos^2(x))]/ ((1+cos^2(x))^2) i don't know how
6 answers
510 views
Mathematica Project - Position, Velocity, and Acceleration?
A rocket is fired vertically upward into the air from a launching
1 answer
485 views
tree has 30 meters tall makes a shadow that is 25 meters long. at the same time Kate's shadow is 1.5 meters long how tall is
1 answer
482 views
the area of a triangle can be determined by using the formula A= 1/2bh, where b is the length of the base, and h is the length
2 answers
665 views
A firework rocket is launched vertically from rest and loses 60% of its mass during a burn time of 4 seconds. What is the final
3 answers
514 views
A 0.8870g sample of a mixture of nacl and nan03 is dissolved in water, and the solution is then treated with an excess of AGN03
2 answers
518 views
10L of hard water required 5.6g of lime for removing hardness. Hence temporary hardness in ppm of cac03
The answer 1000 Who helps
2 answers
558 views
342gm of 20% by mass of ba(oh)2 solution sq gr .57 is reacted with 1200ml of 2m hn03. if the find density is same as pure water
2 answers
584 views
10L of hard water required 5.6g of lime for removing hardness. hence temporary hardness in ppm of cac03.
The answer 1000ppm I
2 answers
510 views
Al2(s04)3 solution of 1 molal concentration is present in 1 litre solution of 2.684g/cc.How many moles of bas04 would be
3 answers
549 views
A 2.8L engine in a vehicle with air conditioning uses 26.5L of coolant. If the coolant has density of 1.11g/ml, what mass does
1 answer
479 views
When taking a bath, we use approximately 450 lbs of water. How much heat, measured in British Thermal Units (BTU) is required to
1 answer
444 views
Please show how to solve for problems like this: How many pounds of coffee that costs 4.50/lb be mixed with 20 lbs of coffee
1 answer
384 views
What are the different parts of speech?
1 answer
436 views
I want the definition of all Parts of Speech(not too short, not too long) with five examples. Thanks in advance.
3 answers
450 views
100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04
2 answers
692 views
50ml of 20.8% bacl2 and 100ml of 9.8% h2s04 solutions are mixed. molarity of cl ions in the resulting solutions is At.wt of ba =
3 answers
1,167 views
100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04
2 answers
559 views
100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04
2 answers
670 views
50ml of 20.8% bacl2 and 100ml of 9.8% h2s04 solutions are mixed. Molarity of cl ions in the resulting solution wt of ba =137
I do
1 answer
739 views
Waht is the reason for the seasons experiment?
4 answers
533 views
What is the HCl concentration if 65.8mL of 0.300M NaOH is required to titrate a 15.0mL sample of the acid?
3 answers
734 views
-3/4>-6/10a
a>2/5 my answer
14 answers
377 views
a 150g-iron ball at 95 Celsius is dropped into a cavity in a block of ice.the cavity is then found to contain 21 g of water .
3 answers
572 views
a 150g-iron ball at 95 Celsius is dropped into a cavity in a block of ice.the cavity is then found to contain 21 g of water .
1 answer
635 views
Cola drinks have a phosphoric acid content that is described as `from 0.057% to 0.084% of 75% phosphoric acid, by mass."
2 answers
1,070 views
P(R or S)=.64 P(R)=.38 P(S)=.52
Probability Union Rule P(R and S)=P(R)+P(S)-P(R and S) .64=.38+.52-P(R and S) .54=.9-P(R and S)
3 answers
432 views
A 10.0-m long wire whose total mass is 39.5 grams is under a tension of 577 N. A pulse is sent down the left end of the wire and
2 answers
544 views
Why did Mesopotamia city-states flourished? Was it due to specialized labor or conquered an area large enough to make themselves
3 answers
800 views
How do I rearrange this equation to solve for m1 (step by step)
r1/r2 = √m2/m1
4 answers
1,334 views
ClO3^-(aq)+3SO3^2- ¡÷ Cl^-(aq)+3SO4^2-
1) If the SO3^2- ion is disaapearing at rate of 0.458 mol/L*s, how fast is the Cl^- ion
4 answers
532 views
The radioactive isotope, phosphorus-32, has a half-life of 14.26 days. How much phosphorus-32 will remain after 60 days?
Please
3 answers
992 views
Hydrogen sulfide burns in oxygen to form sulfur dioxide and water. If sulfur dioxide is being formed at a rate of 0.19 mol L-1
2 answers
1,230 views
ClO- + I- → IO- + Cl-
1) What are the names of these ions? is it "The hypochlorite ion reacts with iodide ion to form iodate
2 answers
952 views
Jason loves to download music. Downloads R Us sells songs only in packages of three, and it charges $2.00 for each package of
2 answers
708 views
Solve the following systems algebraic ally
X+2y=17 X-y=2
5 answers
334 views
3x/7+2/7=2
1 answer
244 views
Give one example of a situation where you would make a discrete graph and an example of when you will see a continuous graph.
1 answer
407 views
Give one example of a situation where you would make a discrete graph and an example of when you will see a continuos graph . I
1 answer
404 views
Why is it important to not let the wooden split burn ?
4 answers
348 views
For each of the following pairs of half-cells,
determine the overall electrochemical reaction that proceeds spontaneously. Na+ |
4 answers
1,260 views
Just learned log rules and I don't get it. How do you solve log5x^2 + 4log5x = 12 ? Thanks in advance.
3 answers
455 views
A ship leaves port at 6 am and heads due east at 20 knots. At 10 am, to avoid a storm the ship changes course to N 47°. Find
4 answers
596 views
Over the past week, 34 baby boys were born at the hospital. This was 54% of all babies born. How many girls were born over the
2 answers
604 views
A box contains 18 marbles, 8 red, 4 green, & 6 white. What is the smallest number of marbles that must be selected to have one
1 answer
411 views
25 square floor mats in a gymnasium are connected together to form a large square area of 22500 cm². What is the length of the
1 answer
471 views
i'm thinking of a number that has two tenths, twice as many hundredths as tenths, half as many hundreds as tenths, twice as many
3 answers
605 views
Let f(t)=t^(2)+5t+2.
Find a value of t such that the average rate of change of f(t) from 0 to t equals 11. t=
2 answers
654 views
A merry-go-round is a common piece of playground equipment. A 6.42m diameter merry-go-round with a mass of 648.0kg is spinning
2 answers
694 views
The length of a rectangle is three more than twice its width. Its perimeter is 24 inches. Find its dimensions length and
3 answers
489 views
Solve the inequality.
[( 2x^2+5x-3 ) / (x^2 -8x+ 16) ] >= 0 I factored out the bottom to (X-4)(X-4). The top should be 2(x+ ?
3 answers
372 views
John walks 5m south and 5m west. Calculate john's distance and displacement from the starting point.
2 answers
489 views
What two numbers multiple to get 64, but add to get -16 ?
Is the answer prime
1 answer
413 views
Factoring: differences of cubes
9a^2-16
1 answer
287 views
A projectile is fired with an initial muzzle speed 190 m/s at an angle 60 from a position 5 meters above the ground level.
Find
4 answers
798 views
An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that
travel 1530 m/s in seawater. How deep is the
6 answers
631 views
What volume of 17 M sulfuric acid must be used to prepare 0.15 L of 1.78 M H2SO4?
3 answers
739 views
The volume of a sample of a gas collected over water at 32 Celsius and 752 torr is 627 ml. What will the volume of the gas be
2 answers
704 views
A flower displays contains tulips, roses, and carnations. For every 10 tulips, there are 4 roses and 6 carnation. The display
4 answers
1,032 views
Analyze how language functions in the video “Power of Words.”
What makes this video so effective in illustrating the various
3 answers
605 views
A car mass of 950 kg is initially travelling at 60km/h. Determine the final speed of the car when the speed increases so that
2 answers
756 views
the circumference of a cirle is pi meter. how long is the side of the largest square that can be cut from the circle
4 answers
849 views
An object moving with uniform acceleration has a velocity of 13.0 cm/s in the positive x-direction when its x-coordinate is 2.73
4 answers
1,852 views
If trapezoids have the same area, would they always have the same perimeter?
2 answers
501 views
Given A = (7, 1, 3), C = (4, -2, 3), B = (5, 1, 2), and D = (6, m, n), find m and n so that segments BD and AC have the same
1 answer
368 views
A cone is inscribed in a sphere of diameter 32 cm. Angle between height and slant height of the cone is 30. Find the volume of
1 answer
534 views
if 8000 is invested in a long-term trust fund with an interest rate of 5% compounded continuously what is the amount of money in
3 answers
657 views
Alexa is weighing a construction barrel up a ramp 4 feet long into the back of a truck. The barrel weighs 120 pounds and the
3 answers
924 views
Please! Can I get some help?
How do public officials use public opinion polls? to learn what citizens think about issues and to
6 answers
383 views
Let n be a positive integer. Find g'(0), where g(x)=(1-x)(1-2x)...(1-nx). (Note: The answer is in terms of n.)
I hope someone can
4 answers
770 views
Write down the primer sequence, starting at position 5 of the following sequence, assuming it is 10bp in size. Also write down
1 answer
362 views
As in an earlier exercise, we assume that the random variables Θ and X are described by a joint PDF which is uniform on the
1 answer
504 views
Suppose that Θ , X1 , and X2 have zero means. Furthermore,
Var(X1)=Var(X2)=Var(Θ)=4, and Cov(Θ,X1)=Cov(Θ,X2)=Cov(X1,X2)=1.
4 answers
2,917 views
Let X be uniform on [0,1/2] . Find the PDF fY(y) of Y=X/(1−X) .
For 0≤y≤1 : fY(y)=
1 answer
386 views
Events related to the Poisson process can be often described in two equivalent ways: in terms of numbers of arrivals during
5 answers
asked by
Ken
1,383 views
The sums of two numbers is -5. Five times the first number equal two time the second number find the numbers
1 answer
399 views
355 students 25 more girls than boys how many girls and boy are there
1 answer
236 views
The school has 25 more female students than males. How many ... 25 to 165 = 190 girls. To check your answer add 190 + 165 and
1 answer
205 views
2 tabbys out of 16 cats
a 193d77bb-eb78-4a75-8fa9-6408c82dc6b0_5fa1c97a1f154.GIF b
1 answer
226 views
three people wanna share 40 crackers evenly how many does each person get
2 answers
208 views
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