# Posts by Sam

Total # Posts: 5,210

Chemistry
HEY DUDES JUST A GUY LOOKING TO INSPIRE SOME CHEMISTRY

Physics
You are watching your friend play hockey. In the course of the game, he strikes the puck in such a way that, when it is at its highest point, it just clears the surrounding 2.96 m high Plexiglas wall that is 14.5 m away. (Ignore any effects due to air resistance.) (a) Find the...

physics
A mass m = 9.0 kg is attached to the lower end of a massless string of length L = 83.0 cm. The upper end of the string is held fixed. Suppose that the mass moves in a circle at constant speed, and that the string makes an angle theta = 21 with the vertical, as shown in the ...

Chemistry
Just kidding. I mean 51.34L?

Chemistry
Does V=188.4 L?

Math
Give the function that describes the sequence. x y 1 1 2 1 3 1 4 1 A. 1/2x B. x C. x exponent 1 D. x exponent 0

Math
If k = 2, which of the following is correct? A.(10k ÷ 2) + 4 ≤ 14 B.8k + 3 = 20 C.k - 13 > -10 D.9k + 15 ≤ 31

Amplifiers
A particular BJT has a base DC current of 1mA and a collector DC current of 10mA . What is the DC beta for this translator?

Chemistry
energy required for ionisation of 0.02 gram atom of magnesium is x Kj .the amount of energy required to ionise 1 atom of magnesium is

Social Studies

Chemistry
If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximately

CHEMISTRY
CHEMICAL KINETICS The rate of reaction 2N₂O5->4NO₂+O₂ can be written in three ways -d[N₂O5]/dt= k[N₂O5] d[NO₂]/dt= k'[N₂O5] d[O₂]/dt =k"[N₂O5] The relationship between k and k' and between k and k" are ?

criminal justice
what are all the procedlural and substantive ways that a prosecutor and a defense attorney can resolve a case before it goes to a grand jury?

Language
Is there any way to add bias to this question? : "How many minutes did you spend doing homework last week?"

Economics
A Cobb-Douglas production function for new company is given by  f(x,y)  50x 2 5 y 3 5 where x represents the units of labor and y represents the units of capital. Suppose units of Labor and capital cost \$100 and \$200 each respectively. If the budget ...

finance
You decide to buy a new home for \$101000.00 at 7.5% interest rate. You feel that you can afford \$800.00 for a mortgage payment. You make a down payment of \$10000.00 How much will you still owe after making payments for one year. Show the mortgage payment schedule with the ...

MATH
HOW IS ONE WHOLE,ONE TENTH,AND ONE HUNDREDTH RELATED ?

You are correct. See pages 307-308

programming concepts
i need the pseudocode if someone can help

programming concepts
Mr. Jones always gives True/False tests to his class. His tests always have 20 ques- tions. The maximum class size is 35. He needs a program that will calculate the stu- dents’ grades based on the best score. Grade A will range from the best score, to the best score minus...

programming concepts
Mr. Jones always gives True/False tests to his class. His tests always have 20 ques- tions. The maximum class size is 35. He needs a program that will calculate the stu- dents’ grades based on the best score. Grade A will range from the best score, to the best score minus...

Math
Ethan had \$8 more than Dakota. Ethan then gave 1/4 of his money to Dakota. The ratio of money Ethan had to the money Dakota had then became 5:7. How much money did Ethan give to Dakota?

History
Thank you !!

History
What was the result of the overthrow of Diem in Vietnam?

math
a cylinder has 2 faces and no edges.

History
No, I wasn't planning on doing that at all haha thank you very much !

History
What caused the French to pull out of Vietnam?

Math
Kelly makes fruit juice each morning. She uses 2 1/3 pints of strawberries and 1 2/5 pints of grapes in her juice. If she doubles her recipe, how many more points of strawberries than pints of grapes will she use?

physics
In a police ballistics test, a 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg block at rest. The bullet goes through the block almost instantaneously and emerges with 50.0% of its original speed. What is the speed of the block just after the bullet emerges

Math
HELP!!!

Math
2. A researcher tagged 40 giant turtles in 2008. In 2009 she returned and captured 50 turtles, 16 of which were tagged. in 2010 she returned again and captured 30 turtles 8 of which were tagged. a: Use a proportion to estimate the turtle population for 2009 b: Use a proportion...

physics
i did not get this . can u do little bit calculations too.

physics
a 4.0-kg block is moving at 5.0 m/s along a horizontal frictionless surface toward an ideal spring that is attached to a wall. After the block collides with the spring, the spring is compressed a maximum distance of 0.68 m. ) Suppose now friction is present and k = 0....

Algebra ll
i need help i have a polynomial f(x) whose coefficeint are real numbers. Find the remaining zeros of f. Degree 3, zeros -4,-2,-i

phi 208
Just War Theory asserts that military intervention

What were aboriginal peoples in Canada thinking and feeling about the nazi soviet pack in 1939? I can't find anything on it. I wanna know what the perspective of an at home aboriginal person was feeling towards the thought of another war? Please help.

Chemistry
Helium is collected over water at 20.°C and 1.16 atm total pressure. What total volume of gas must be collected to obtain 0.597 g of helium? (At 20.°C the vapor pressure of water is 17.5 torr.)

Chemistry
Moles of h2o driven off And convert grams 0.85 to moles

Chemistry
Determine the energy absorbed as two moles of Nitrosyl Chloride are disassociated into nitric oxide and chlorine gas (used bond energies of kJ per mole to determine your net energy released in Joules): 2NOC1(g)-->2NO(g)+C12

Chemistry
Determine the energy absorbed as two moles of Nitrosyl Chloride are disassociated into nitric oxide and chlorine gas (used bond energies of kJ per mole to determine your net energy released in Joules): 2NOC1(g)-->2NO(g)+C12

CHemistry
Given the following information calculate the heat of formation of C2H4. C2H4 + 3 O2 ¡æ 2 CO2 + 2 H2O ¥ÄH¡Æ = -414 kJ/mol C + O2 ¡æ CO2 ¥ÄH¡Æ = -393.5 kJ/mol H2 + ¨ö O2 ¡æ H2O ¥ÄH&...

Science
What are the four flight forces? Give a brief description of each.

calc
integral from 1 to x of (5/(t^3 +3))dt

Science
The current atomic model would be revised if a) better microscopes were being used to study its structure. b) better microscopes are invented in the future. c) new information about an atom's structure is discovered. d) a new element is discovered in the future.

AP Chem
Lead metal is added to a solution of hydrochloric acid. What would be the theoretical cell potential, E°, for the reaction?

Math.
Sky is wrong 5. is D.

Applied Chemistry - HELP!
Make a poster of types of product warning labels. I'm having a hard time looking up types of product warning labels. Please help and please do not just give me Google link to product label for me to look up by myself which I did but I .... having a hard time.

History
canada and around the time of the constitustion act i suppose to start

History
What were three tactics of assimilation used on aboriginals?

Accounting
Paid \$1,200 cash to Hilldale Mall for Success Systems' share of mall advertising cost. I need to know the debit and credit.

Accounting
Completed a project for Chang Corporation abd received \$3620 cash. I need to know the debit and credit. Thanks

I need help too

Algebra
For f(x)=(3x^2)+5and g(x)=7x-2, a. Verify: g(x + 2) ≠ g(x) + g(2). b. Find (f – g)(x). c. Using the resulting function in (b), show that (f – g)(2) = f(2) – g(2). (The work should be different for each side of the equation.) d. Is (fg)(0) =(f/g)(0)? ...

chemistry
Calculate the molarity of a solution made by adding 47.2g of NaNO3 to a flask and dissolving it with water to create a total volume of 1.80L .

physics
A 2inch diameter pipe has been chosen to pass 65 GPM. Can this diameter be used for the suction line? If not , what line diameter should be specified?

physics
. An open tank holding 400 cubic foot of air at atmospheric pressure at 70 degrees F and heated to 160 degree F. What is the volume of air that escapes from the tank?

physics
A 25HP electric motor turning a 1800 RPM will produce how many foot pounds of torque?

math
The ratio of Maya’s beads to Kayla’s beads was 12:7. After Maya bought another 28 beads and Kayla gave away 3/2 beads, 5/7 of Kayla’s beads were left. a) How many more beads did Maya have than Kayla in the beginning? b) Find the new ratio of Maya’s beads to...

math
The ratio of Maya’s beads to Kayla’s beads was 12:7. After Maya bought another 28 beads and Kayla gave away 32 beads, 57of Kayla’s beads were left. a) How many more beads did Maya have than Kayla in the beginning? b) Find the new ratio of Maya’s beads to ...

calc
Verify that the function satisfies the three hypotheses of Rolle's Theorem on the given interval. Then find all numbers c that satisfy the conclusion of Rolle's Theorem. (Enter your answers as a comma-separated list.) f(x) = x^3 − x^2 − 12x + 8, [0, 4]

Math
Choose all measurements that are equivalent to 45 meters. a 450 centimeters b 4500 centimeters c 0.045 kilometer d 0.45 kilometer e 4500 millimeters I pick b, d, e is this correct.

Math
What ratio is equivalent to 3/20? a 5 to 100 b 100 to 5 c 140 to 21 d 21 to 140 I picked d is this correct?

Is my answer correct?? The function h(t) = 2 + 50t - 1.862t^2, where h(t) is the height in metres and t is the time in seconds, models the height of a golf ball above the planet Mercury's surface during its flight. A) What is the maximum height reached by the ball? I got ...

math
Thank you. I moved the decimal too many places. Thanks again

math
A \$300 mountain bike is discounted by 30% and then discounted an additional 10% for shoppers who arrive before 5am. If you go to the store at 4:30 am, how much will you pay? I did 300^30 =90. 300 -90 ==210 ^ 10 =2.10. 210-2.10= 207.90. Is this correct?

math
I get 2,250. Thank you Ms. Sue for making it easy to understand.

math
ted takes out a student loan to pay for his college tuition this year. Find the interest on the loan if he borrowed \$2,500 at an annual interest rate of 6% for 15 years. Could someone help step by step, I cant seem to get it. Thank you

math
Ted takes out a student loan to pay for his college tuition this year. Find the interest on the loan if he borrowed \$2,500 at an annual interest rate of 6% for 15 years. What is the formula to figure this out ?

linear algebra
Solve using the concept of rank. Is S={−16 −7 −21,2 1 3, 21 9 2} a linearly independent set of vectors in R3? So I know how to find out if this set is linearly indep. But, I don't know how to use row rank to find this out..

math
thank you

math
Tim sells sneakers. He receives \$9.75 an hour and 3% commission on sales. One week he works 24 hours and his sales total \$1,879.95. What are his total earnings for the week ? Please help

science
is it corrrectr

science
i think its a

science
At 3:15 one afternoon, the temperature over the land reaches its highest value for the day — about 89°F. The temperature over the adjacent water is about 72°F. What would the expected weather conditions be at this time? A. Cloudy skies and a sea breeze B. Clear ...

Pre-Algebra
Equation S: y = x + 9 Equation T: y = 2x + 1 Which of the following steps can be used to find the solution to the set of equations? x = 2x + 1 x + 9 = 2x x + 1 = 2x + 9 x + 9 = 2x + 1

Math
Zain goes swimming. He swims the first length of the pool in 2.5 minutes. The time he takes to swim each length is 10 seconds more than he took to swim the previous length. A. Find the time Zain takes to swim the fifth length. B. Find the time taken for Zain to swim a total of...

Math
A ball is dropped vertically. It reaches a height of 1.6m on the first bounce. The height of each subsequent bounce is 80% of the previous bounce. A. Find the height the ball reaches on the 6th bounce. B. Find the sum of the first seven terms of this sequence.

life orientation
Referee

chemistry
2 NH3 (g) ----> N2 9g) + 3 H2 (g) at equilibrium, [NH3] = 0.0227 M, [N2] = 0.119 M, and [H2] = 0.346 M. Calculate Kc for the reaaction at this temperature

computer applications
John wants to see the formulas he has used in his spreadsheet but he does not want to see the results of the formulas. How does he display his formulas? A. Click on Trace Precedents. B. Click Print Formulas. C. Click on Show Formulas. D. Click Evaluate Formulas from reading my...

Physics
Oops, c should be when cos(kx) = 0, work it out from there.

Physics
a), Just pop 0 into the equation, what are you left with? b) ω is 2pi/T, so pop that into the equation. c) ?? Not sure. I think it's whenever Sin(wt) = 0, so 0, pi, 2pi, 3pi etc. But I think wavelenth is 2pi, so 1/2, 1, 3/2 might be the answer.

Maths
Suppose that the reliability of a HIV test is specified as follows: Of people having HIV, 90% of the test detect the disease but 10% go undetected. Of people free of HIV, 99% of the test are judged HIV–ive but 1% are diagnosed as showing HIV+ive. From a large population ...

math
Robert is replacing sod in two square-shaped areas of his backyard. One side of the first area is 7.5 feet. One side of the other area is 5.7 feet. The sod costs 'y' dollars per square foot. A)Write an expression to show how much Robert will spend on sod. B)If the sod ...

math
In each of the following, relationships among marked angles are given below the figure. Find the measures of the marked angles. b. m(∠AOB ) is 30° less than 2m (∠BOC ) c. m(∠AOB ) – m(∠BOC ) = 50

Math
A flower planter is to be made from landscape ties that are 4 feet long, four inches high and six inches wide. Each planter is 4 ties high. Describe how to build the planters so that they are square

Math Ms.Sue
For the 2nd one, its c.

statistics
In the population, the average IQ is μ = 100 with a standard deviation of σ = 15. A team of scientists wants to test a new medication to see if it has a positive effect on intelligence. A sample of n = 10 participants who have taken the medication has a mean of M = ...

Physics
mass is grams, so 0.016 .. pop that in your formula and you're golden

earth
what is 15 times 12

math
Tony plans to install a window pane that has a length of 8 inches and a width of 6 inches. He decides that the length has to be reduced by z inches. He says that the new area of the window pane will be 48−z. Is Tony correct? Why or why not? THANK YOU!!!!!

math
Janice plans to build a rectangular table top with an area of 60+20r square inches. The width of the table top is 10 inches. What is the length of the table top?. THANK YOU

Algebra 2
Simplify each sum or difference. State any restrictions on the variable. -3x/x^2-9+4/2x-6

physic
Question Part Points Submissions Used A hypodermic syringe contains a medicine with the density of water (figure below). The barrel of the syringe has a cross-sectional area of 2.88 10-5 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm. A ...

physics
NEEDS HELP PLEASE!! A 100kg shot putter is putting a shot 4kg. Just before he releases the shot, he is in the air (feet are off the ground). At this instant, the only force he exerts against the shot is an 800N horizontal force directed forward. a-what is his horizontal ...

math
Scale factor of 0.5 inches = 1.5 feet

linear
^ it is an augmented matrix, sorry the formatting is bad.

linear
Is the set S = {v1, v2, . . . , vk} linearly independent? 1 0 2 −2 0 1 0 0 1 0 −1 −1 2 0 0 0 −1 2 1 0

Ratio
The ratio of cats to dogs at the shelter is 3 to 2. If there are 16 cats at the shelter, how many dogs are there?

S.S
B, im 110% sure