# Tri

Popular questions and responses by Tri
1. ## Physics

also how would you do a police car stopped at a set of lights has a speeder pass it at 100km/h If the police car can accelerate at 3.6 m/s^2 a)how long does it take to catch the speeder> b) how far would the police car have to go before it catches the

2. ## crtical thinking

How does critical thinking affect you as a reader and writer? How can thinking critically improve your writing?

3. ## Chemistry

A 2B + C at a certain temperature the equilibrium pressure of the system is 0.318atm. Determine Kp for this reaction. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2B + C = 0.318atm /3 = 0.106 CO2 = 0.106 atm NH3 = 2(1.06) atm =0.212 atm Kp = PNH3 ^2 x PCO2 kp

4. ## Chemistry

An intermediate step in the production of battery acid, sulfuric acid, invoves the information of sulfur trioxide gas from sulfur dioxide and oxygen gases. (this reaction is also the usual first step in the production of acid rain). The Kp for this

5. ## Chemistry

When I invert the concentration of say this equation: 2HCr4- + 3HS03- + 5H+ -> 2Cr3+ + 3SO4^2- + 5H20. and get RSRRE wrt HS03-, the rates of reactants is positive and the rates of products is negative. If say it is wrt HS03- which gives it a coefficient of

6. ## Chemistry

2HCr4- + 3HS03- + 5H+ -> 2Cr3+ + 3SO4^2- + 5H20. At t=0, 0.0249 mols of HCr04- are loaded in to 250ml of solution. After 1/10 of an hour, 0.00852 mol of HCrO4- remain. Assuming the solution volume remained the same, how many grams of water were formed per

7. ## geometry

A tree is 12 feet tall and casts a shadow that is 9 feet long. A building nearby casts a shadow that measures 24 feet. How tall is the building? Draw a picture proportional

8. ## chemistry

Oh my my test is coming up and I have no idea how to do these questions and when I asked my teacher for help he said you should do it yourself.... Thanks! An intermediate step in the production of battery acid, sulfuric acid, invoves the information of

9. ## chemistry

A first-order reaction initially proceeds at a rate of 0.5 mol/ls. What will be the rate when half the starting material remains? When one-fourth of the starting material remains?

10. ## Chemistry

In a experiment to determine the molecular weight and the Ka for ascorbic acid (vit. c.) a student dissolved 1.3713g of the monoprotic acid in water to make 50 mL of solution. The pH was monitored throughout the titration. The equivalence point was reached

Identify areas of vagueness and ambiguity and discuss how you might clarify the e-mail message using the writing principles addressed in the text. Below Hi class, I donâ€™t have a lot of time to explain but off the top of my head answer is as a reader

12. ## MATH

Oh no! I just realized that I just had a test and for example 2sinx-sinx-1. If I answered theta = *whatever whatever... instead of x = *whatever and my teacher decides to deduct half marks for each question I do, what are some points that I can argue? This

13. ## Precalculus

what is the area of a pastry used to cover a slice of bery pie having outer crust arc of 7.6 cm and a central angle of 30 degrees? My answer: 661.88 cm sqr Answer: 55.2 cm sqr Thanks.

14. ## chemistry

fe 3+ + scn- fescn2+ Apparatus and materials: 0.2 M Fe(NO3)3, 0.002M Fe(NO3)3, 0.002 M KSCN. PRELAB: for this section [fe3+]i = y [scn-]i = z and [fescn2+]eq = x using the symbols y,z,x, fill in the ice char. note that the rxn starts w/ reacts. only at

15. ## chemistry

T1/2 depends inversely on k why ? T1/2 depends inversely on k and directly on the initial concentration of the reactants in question. What is the order? -is the order 0 or 2nd? I think it is 0 because the [] is on top opposed to 1/[]

16. ## chemistry

what is a good explanation for: Many enzyme catalyst reaction start out as 1st order and as time passes by it becomes 0 order. Why?

17. ## physics

A student thrusts a 0,20T magnet with a cross sectional area of 2.0 cm^2 into a coil of 400 turns in 0,50s. The coil has a resistance of 30 ohms and it is connected in series with a moving coil meter having a resistantace of 170 ohms. What is the average

18. ## physics

A student thrusts a 0,20T magnet with a cross sectional area of 2.0 cm^2 into a coil of 400 turns in 0,50s. The coil has a resistance of 30 ohms and it is connected in series with a moving coil meter having a resistantace of 170 ohms. What is the average

19. ## physics

when is the Kinetic energy of the satellite the greatest and the least? Potential energy the greatest? The least?

20. ## physics

How would you do this? The K is 25.0 N/M The spring's max amount of elastic potential energy?

21. ## physics

How would you do this? The K is 25.0 N/M The spring's max amount of elastic potential energy?

22. ## Physics

If a plate is dropped and comes in contact with a hard floor vs a playe coming in contact with a carpet, which has the greater impulse?

23. ## Physics

A baseball is hit at 35.0m/s at an angle of 25.0 degrees to the horizontal. How high will the ball go> When will it reach that height? How far across the baseball field will the ball travel? Thanks.

24. ## Physics

A general question: if a train goes north at x m/s with a weight of xxxx, and another train goes west at x m/s with a weight of xxxx, they collide and couple together, what direction will they be gonig and at what velocity. how would you solve this

25. ## Microeconomics

What 's the difference between Compensated Variation (CV) and Equivalent Variation (EV) ?

26. ## Physics

A dragster accelerates from rest for a distance of 450m at 14 m/s^2. A parachute is then used to slow it down to a stop if the parachute gives the dragster an acceleration of -7m/s^2 how far has the dragster traveled before stopping?

27. ## Physics

A dragster accelerates from rest for a distance of 450m at 14 m/s^2. A parachute is then used to slow it down to a stop if the parachute gives the dragster an acceleration of -7m/s^2 how far has the dragster traveled before stopping?

28. ## Physics

A dragster accelerates from rest for a distance of 450m at 14 m/s^2. A parachute is then used to slow it down to a stop if the parachute gives the dragster an acceleration of -7m/s^2 how far has the dragster traveled before stopping?

29. ## Precal

what is your answer for 8sin^2theta + sintheta -1 ? and how would you do it ? thanks You have not written an equation. There is nothing to "solve". Did you leave out an " = 0 " ? Yeah sorry Yeah sorry Let x = sin theta 8x^2 +x -1 = 0 x = [-1 +/-

1. ## MATH

Thanks, I hopefully won't get any deductions!

posted on February 28, 2009
2. ## MATH

Yeah that is right but he changed a question around and I guess not thinking I wrote theta instead of x... Sigh... needed this test mark to be high.

posted on February 28, 2009
3. ## chemistry

both my shift buttons are broken sometimes it works. i think i got this question, another one is what special property of a substance encourages physical change of state?

posted on October 26, 2008
4. ## chemistry

Everything was good until this happened: An intermediate step in the production of battery acid, sulfuric acid, invoves the information of sulfur trioxide gas from sulfur dioxide and oxygen gases. (this reaction is also the usual first step in the

posted on October 8, 2008
5. ## Chemistry

Another question is when you invert it and times everything by negative 3 it would make the rates positive on the reactants side and negative on the products side. When you get the rate for that, do you make it positive or negative and why?

posted on September 23, 2008
6. ## chemistry

I think that is good cause the rate is proportional to [A] as it is first order?

posted on July 6, 2008
7. ## physics

EMF = BLV i don't have the length but im trying to find the velocity?

posted on June 13, 2008
8. ## physics

nvm got it thanks :P

posted on May 9, 2008
9. ## Physics

thanks!

posted on March 24, 2008
10. ## Physics

Yeah, so therefor it is the same impulse? but J = FT The force is the same but the T interaction is different? or something?

posted on March 24, 2008