Posts by Ken
Total # Posts: 732

Physics
An object moving with uniform acceleration has a velocity of 13.0 cm/s in the positive xdirection when its xcoordinate is 2.73 cm. If its xcoordinate 2.95 s later is ?5.00 cm, what is its acceleration? cm/s^2 Express the position of the object in onedimensional motion at ... 
Math
idk the formula, but simply taking ? of 90° is not correct. I would convert the fractions to decimals, giving you 0.625 and 0.375 (you can drop the zeros in your calculations, just don't forget the decimal!). Then, ***MAYBE***: 0.375:n = 0.625:(n * 0.375), where n is ... 
Religion
For a quick read, go here (remove the spaces and replace the word "dot" with a period, first): thetrumpet dot com / literature/read/1299ezekieltheendtimeprophet/208 For the full answer, read the entire booklet. It's free to download, read online, or order a ... 
Religion
Never mind. As BobPursley said: "I suspect your text tells you one is true, and the others false." Look in your book to see what you are SUPPOSED to answer. 
Religion
Do you mean Daniel's vision? If not, please give chapter and verse. 
Algebra
Stated somewhat more simply: It took you 5 minutes to go 3 kilometers. How many kilometers do you have left to go? Divide that by 3 and multiply that by 5. Or, as Richard Bach wrote in "Illusions, the Adventures of a Reluctant Messiah," >Everything in this book ... 
pre algebra
matthew mixes pretzels that sell for $1.50 a pound with cereal that sells for $3.00 per pound. he wants to make 12 pounds of mixture to sell for $2.00 a pound. how many pounds of each should he use? 
MATH
how did u get 11/2 
MATH
The solution below corresponds to an inequality involving a quartic function. Write a possible quartic polynomial inequality that matches the solution. Prove that your inequality matches the solution. x < 4 and x > 7 
math
Trig Identities prove sinx+1 \ 1sinx = (tanx+secx)^2 
physics
Tx/Ty= (4R)^4/2 / R^4/2 = 1^3 = 3 times 3 * 90 = 270 deg ============================== why Radius^(4/2) mv^2/R = G m M/R^2 so if k^2 = GM v = k R^.5 T = 2 pi R/v = 2 pi R/kR^.5 = constant*R^1.5 
math Please help!!
12.13592233009709 
physics
Town A lies 20 km north of town B. Town C lies 13 km west of town A. A small plane flies directly from town B to town C. What is the displacement of the plane. 
Physics
Town A lies 20 km north of town B. Town C lies 13 km west of town A. A small plane flies directly from town B to town C. What is the displacement of the plane. Please explain how you got the answer 
Solid mensuration
the circumference of a cirle is pi meter. how long is the side of the largest square that can be cut from the circle 
math
Reduce the sum to lowest term possible 7/15+7/15+2/15 
mathematics
a car travelled 100km in 8hours and the remaining 40km in 2hours.find the average speed 
mathematics
a car travelled 100km in 8hours and the remaining 40km in 2hours.calculate the average speed 
geometry
What is the area of a sector with a central angle of 210 degrees and a diameter of 4.6 m? 
Physics
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 it's kinetic energy increased by 165 kJ. 
Into to com
Analyze how language functions in the video “Power of Words.” What makes this video so effective in illustrating the various principles of verbal communication? Can you think of a real life situation where the specific words you choose can radically impact the ... 
math
A flower displays contains tulips, roses, and carnations. For every 10 tulips, there are 4 roses and 6 carnation. The display contains 100 flowers. How many of the flowers are tulips? 
math
How much pure acid must be added to 2 liters of a 10% solution of acid to obtain a mixture that is 20% acid? 
math
You should never rely on the easy answer that someone just gives you. Use the hints given and your brain to come up with a reasonable answer. Hint: 550 is NOT correct! 
ALGEBRA 2
Find the function rule for g(x). The function f(x) = x2 . The graph of g(x) is f(x) translated to the right 8 units and down 7 units. What is the function rule for g(x)? 
Chemistry
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 when dried and measured at STP? (Vapor pressure of water at 32 Celsius = 35.7 torr) 
social studies
thank you ms. sue! 
physics
An automobile accelerates from rest at 0.9 m/s 2 for 25 s. The speed is then held constant for 18 s, after which there is an acceleration of ?5.8 m/s 2 until the automobile stops. What total distance was traveled? Answer in units of km 
Chemistry
What volume of 17 M sulfuric acid must be used to prepare 0.15 L of 1.78 M H2SO4? 
Physics
i think the answer is 5355m 
Physics
so it's 1530*14? 
Physics
An oceanic depthsounding vessel surveys the ocean bottom with ultrasonic waves that travel 1530 m/s in seawater. How deep is the water directly below the vessel if the time delay of the echo to the ocean floor and back is 7 s? Answer in units of m. Is it 1530*7? 
Math
But does the range equation still work if the projectile starts 5 feet off the ground. 
Math
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 the horizontal displacement from the firing position to the point of impact. I know that y=vsin(60)t.5gt^2 and x=vcos(60)t. but I keep getting wrong... 
math
Factoring: differences of cubes 9a^216 
Math
What two numbers multiple to get 64, but add to get 16 ? Is the answer prime 
Physics
John walks 5m south and 5m west. Calculate john's distance and displacement from the starting point. 
Math
With the top and bottom factored out, there is nothing to cancel out. So what do i do from here? 
Math
Solve the inequality. [( 2x^2+5x3 ) / (x^2 8x+ 16) ] >= 0 I factored out the bottom to (X4)(X4). The top should be 2(x+ ? )(x ?). What would I do next to finish the problem? 
College Physics
2571.4375 
math
The demand function for a product is p=20−5q where p is the price in dollars when q units are demanded. Find the level of production that maximizes the total revenue and determine the revenue. q= units R= $ 
math
The length of a rectangle is three more than twice its width. Its perimeter is 24 inches. Find its dimensions length and width. 
math
The density function for a femur can be modeled as ρ(x)=80+πcos(πx)+3x grams per centimeter, −25≤x≤25. (a) Calculate the total mass of a femur. (b) Find the center of mass of a femur. 
math
540 yads 
Physics
A merrygoround is a common piece of playground equipment. A 6.42m diameter merrygoround with a mass of 648.0kg is spinning at 39.4rpm. John runs tangent to the merrygoround at 6.36m/s, in the same direction that it is turning, and jumps onto the outer edge. John's ... 
Math
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= 
Maths
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 tens as hundreds and three times as many ones as hundredths. Can you Guess the number 
MAth GCF LCM
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 side of each square floor mat? 
math
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 of each color marble? 
Math
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 past week? 
Trig right triangle
can i also have the actual answer and the process 
Trig right triangle
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 the ships distance from port at 4 pm. 
Math
Just learned log rules and I don't get it. How do you solve log5x^2 + 4log5x = 12 ? Thanks in advance. 
AP Chemistry
For each of the following pairs of halfcells, determine the overall electrochemical reaction that proceeds spontaneously. Na+  Na, Ni2+  Ni 
Chemistry
Why is it important to not let the wooden split burn ? 
Algebra 2
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 need help pls 
Algebra 2
Give one example of a situation where you would make a discrete graph and an example of when you will see a continuous graph. 
Algebra 2
3x/7+2/7=2 
Algebra 2
(4.3,2.3) is it correct 
Algebra 2
Solve the following systems algebraic ally X+2y=17 Xy=2 
Math
7 cups 
Algebra 2
Jason loves to download music. Downloads R Us sells songs only in packages of three, and it charges $2.00 for each package of three songs. Jason's favorite group just released their greatest hits CD, which has 17 songs on it. Jason wants to buy all 17 songs from downloads ... 
Chemistry
ClO + I → IO + Cl 1) What are the names of these ions? is it "The hypochlorite ion reacts with iodide ion to form iodate ion with chloride ion" ? 2) Write the general rate law (using the letters k for the rate constant, and n and m for the reaction orders... 
Math
2 
chemistry
Hydrogen sulfide burns in oxygen to form sulfur dioxide and water. If sulfur dioxide is being formed at a rate of 0.19 mol L1 s1, what are the rates of disappearance of hydrogen sulfide and oxygen? rate of disappearance of O2? rate of disappearance of H2S? I got : rate of ... 
chemistry
The radioactive isotope, phosphorus32, has a halflife of 14.26 days. How much phosphorus32 will remain after 60 days? Please help. 
chemistry
@DrBob222 for number 2, is it 1.09x10^4*1/3? 
chemistry
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 appearing? 2) if the after 10 minutes of reaction time, 1.09x10^4 mole of Cl^ ion has been produced, how many moles of SO3^2 ion have ... 
Algebra
How do I rearrange this equation to solve for m1 (step by step) r1/r2 = √m2/m1 
World History
Why did Mesopotamia citystates flourished? Was it due to specialized labor or conquered an area large enough to make themselves selfsufficient. 
theory of machines
yawa panga bogo ninyo 
Physics
A 10.0m 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 29 ms later a second pulse is sent down the right end of the wire. Where do the pulses first meet? 
chemistry
1. Which example has particles that can be drawn closer to occupy smaller volume? a. fruit juice b. block of wood c. air inside the syringe d. ice cube 2. Which of the following phenomena does NOT involve the application of gas pressure? a. burning fuels b. falling leaves c. ... 
chemistry
A piece of iron (Cp = 0.450 J/(gi°C)) that has a mass of 21.5 g and an initial temperature of 100.0°C is submerged in X g of water (Cp = 4.184 J/(gi°C)) at 20.0°C. The temperature of the system (iron and water) changes to 21.4°C. What is the value of X? 
chemistry
1. Which example has particles that can be drawn closer to occupy smaller volume? a. fruit juice b. block of wood c. air inside the syringe d. ice cube 2. Which of the following phenomena does NOT involve the application of gas pressure? a. burning fuels b. falling leaves c. ... 
math
2 trains leave metropolos at same, one going south 50 mph the other east 40 mph. How far apart will they be at 3 hours 
calculus
Can I have a website of Beginner calculus books? 
Finite Math
Thanks 
Finite Math
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+.52P(R and S) .54=.9P(R and S) At this point, how do I deal with the P(R and S)? I know the final answer is .26, but how do I get there? 
Chemistry
Cola drinks have a phosphoric acid content that is described as `from 0.057% to 0.084% of 75% phosphoric acid, by mass." Estimate the pH range of cola drinks corresponding to this average range of H3PO4 content. I am having trouble with the wording of this question, I ... 
math
a 150giron 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 . CALCULATE THE HEAT OF FUSION OF ICE (The specific heat capacity of iron is 0.11 cal/g x C degrees.) 
math
so the answer would be 305.36 J/G ? is that right? 
math
a 150giron 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 . calculate the heat of fusion of ice. 
Math
Thanks 
Math
I need help, thanks 
Math
I re did it 4/5 
Math
1/80 
Math
Is the answer is a<5/4 
Math
I cross multiply by 10/6 
Math
3/4>6/10a a>2/5 my answer 
Chemistry
What is the HCl concentration if 65.8mL of 0.300M NaOH is required to titrate a 15.0mL sample of the acid? 
science 8
Waht is the reason for the seasons experiment? 
chemistry
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 not still understand step by step clearly Thank a lot 
chemistry Thank a lot help
100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density 1.25g/ml. 50ml of 20.8% bacl2 and 100ml of 9.8% h2s04 solution are mixed. Molarity of cl ions in the resulting solution is ... 
Math
30 cm 
chemistry
100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density is 1.25g/ml 50ml of 20.8% bacl2 and 100ml of 9.8% h2s04 solutions are mixed. Molarity of cl ions in the resulting solution ... 
chemistry Ben
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 = 137 100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final... 
chemistry step by step for me
100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density is 1.25g/ml. 50ml of 20.8% bacl2 and 100ml of 938% h2s04 solutions are mixed. Molarity of cl ions in the resulting solutions... 
math
plot the number on the number line 1 5/6 
math
A wheel made 660 revolutions at 44 8/9 revolutions per minutes. how many minutes did it rotate