# Charlie

Questions and responses by Charlie, page 4
1. ## Calculus

lim (2Q^(2)+5)/(q+2) q->2 lim |y+3| y->-3

2. ## Maths

For y= 2x squared + x - 1 the x-intercepts and the turning point respectively are?

3. ## chemistry

how would you, explain ans how calcium chloride [CaCl2] is bonded.

4. ## earth science

descibe the advanages of plotting data in graph form

5. ## Physics

An EM wave has a wavelength of 620 nm. What is its frequency? How would we classify it?

6. ## Math

What does KAPS mean in Math?

7. ## statistics

A population of 200 voters contains 52 Republicans, 128 Democrats, and 20 independents and members of other parties. A simple random sample of 20 voters will be drawn from this population. The expected number of Republicans in the sample is? and The

8. ## Algerbra 1

A(1,4), (6,8) Round to the nearest tenth

9. ## algebra

how do you solve for y in the equation 1/y=(1/3)x^3-(253/12)

10. ## Traveling(saving money)

how much are plane tickets to: india england

11. ## math

write the 100-complement of 40

12. ## math

need help please. thanks evaluate and simplify. (8x/y) for x=10 and y=2

13. ## Periodic Table

Hello all, how does the periodic table determine the type of bonding of compounds Cheers Charlie.

Suppose you surveyed 50 students and 34 said that they approve of how the president is doing. Construct 90%, 95%, and 99% confidence intervals for the true proportion of students in your school who approve of how the president is doing. Be sure to

15. ## College Physics

A 50 kg skater moving at 5 m/s over frictionless ice grabs a rope stretched out 10m from a post and perpendicular to her path. She then moves in circles, spiraling inward as the rope wraps around the post. How fast is she moving when she is 2 meters from

16. ## math

desperately seeking help. work must be shown. answer must be in simplest form. Thanks 1 1 _ X _ 2 2

17. ## Math

I need to figure out what a deposit of 3500 a month, with 9 percent intrest compounded monthly, would be in 6 years. Any help would be greatly appreciated.

18. ## Physics

I have to plot a graph of Pressure gradient vs average velocity (water in a pipe, I have all the data). I plan to put the average velocity on the x axis, since I could control that better in an experiment. Do you agree/ Thanks. Charlie

19. ## Thermodynamics

Would someone explain entropy in simple terms please. Thanks.

20. ## Physics

If energy is 1/2 mv^2; and m and v are always positive.... How come the ground state energy of Hydrogen is a minus value? Charlie

21. ## physics: relativity

I think I can rearrange the Lorentz contraction equation, solving for v using: v=sqrt[1-(L/Lo)^2] x c^2 Would someone check my thinking please? Thanks

22. ## math

In the number 268,743 how many times greater than the 3 is the 6?

23. ## math

what is the answer to. Write the next 4 letters in this sequence: A,B,Z,Y,C,D

24. ## math

In the number 268,743 how many times greater than the 3 is the 6

25. ## math

the response from Ms writeacher did not show the answer

26. ## math

what is the value of 4 in 0.045

27. ## Sig Figs

In a 9V circuit, all the resistors are 20 or 40 kilo Ohms. Convention says that calcs should therefore be quoted to 1 sig fig, since the volts are the least accuracy. 2 seems better though. Any ideas?

28. ## Physics

I need to calculate the closest two parallel plates can get before they spark I have the voltage, and will use E=V/dist (rearranged) to get the distance. I THINK the field strength value I should use is 3x10^-6 Vm^-1. No other info is given in the

29. ## Physics SHM

Am self studying SHM, so sorry for the elementary questions. Would someone check/confirm some facts i think I've learned please. 1 If a sine wave graph starts at the origin at time = 0s, the sysyem is in equilibrium? 2 The amplitude at t= 0s is zero. 3

30. ## college

what's the most commonly overlooked reason for forgetting?

31. ## Physics

A spring of k=11 N/m has a block of mass 4 kg attached to it on a frictionless table. If the block is pulled a distance 0.15 m to the right and released from rest, how long will it take the block to return to its equilibrium position?

32. ## Physics

The position of some object moving along the x-axis is observed to be x(t)=9cos(pi*t/3+pi/4) meters. Find the frequency.

I was wondering could anyone help me with question 6 an page 302 of the Business Studies for households and enterprises Junior Certificate by Matt Hynes

34. ## Graphing Functions

Can someone point me to a starting point in graphing f(x)= 25/cos x If it weren't a fraction and a cosine, I'd try to build a table of coordinates. This one, I have no start point. Thanks