# Search results

1. ### Limits

Limits..please help! Ok so I just missed the past week of school due to other commitments..I have a math assignment due tomorrow and I wasn't in class when the material was reviewed. I'm having some trouble with the limit problems. I'm not quite sure what he is looking for. The question is...
2. ### General form of a parabola

Alright perfect! thanks a lot for your time.
3. ### General form of a parabola

For a parabola whose Directrix is given by the equation x=p and whose Focus is (h,k). Is this by any chance the correct general form of the parabola? x=1/2(h-p) [y^2 - 2yk + h^2+k^2-p^2]
4. ### Pythagorean triplet and vectors

OK never mind, false alarm. For some reason I was thinking strictly in the form of triangles for my vector subtraction. I believe situation b) is possible if you have any two vectors of opposite direction.
5. ### Pythagorean triplet and vectors

Suppose that vectors A, B and C are related by A-B=C. a) Is it possible that A-B=C? If so, draw the sort of situation when this is so. (A is the magnitude of A, B of B and C of C.) b) Is it possible that C=A+B? If so, then draw the sort of situation when this is so. ------- a) I used the...
6. ### Rocket Launch

A model rocket is launched with an upward acceleration, after t seconds it runs out of fuel at x height. Sketch the a vs. t, v vs. t, and position vs. t graphs for the rocket from the time of launch until the moment it reaches max height. -I know that after the rocket runs out of fuel it will...
7. ### Determine when the velocity of the particle is zero

A particle has an initial position X=0m and an initial velocity v=-6.0m/s. Its acceleration is given by the function [1.0 m/s^2 + (0.25 m/s^3)t] where t is in seconds. Plot the acceleration vs. time. From your plot, determine when the velocity of the particle is zero. -ok so if when I plot...
8. ### Tough physics question!

A particle has an initial position X=0m and an initial velocity v=-6.0m/s. Its acceleration is given by the function [1.0 m/s^2 + (0.25 m/s^3)t] where t is in seconds. Use calculus to find the position of the particle at the instant when its velocity is zero. -this is a bonus question on...

11. ### Graphing Question

It's a parabola. ..so would the line between the two points of the function f(x) = x^2 be curved and all others straight?
12. ### Graphing Question

The function is.. f(x) = 2x-2 if x<1 x^2 if 1 <= x <= 2 7-x if x>2 I made a table of values and graphed the points. The problem is my prof said something about not all of the points being connected by straight lines, some being connected by curves. I was wondering why...
13. ### Impossible Question

Well I checked it a couple times..seems correct to me.
14. ### Correct Notation

Integral - it is the second one you have described. -I'm thinking that it would just be 2.45*2.5*10^17m^2 ? ..and then I would solve
15. ### Correct Notation

I am having a bit of trouble expressing me answer in the correct simplified form. The answer is... 2.45/2.5x10^17m^-2 (m is meters) -what is the correct form to express this answer?
16. ### Correct Notation

I am having a bit of trouble expressing me answer in the correct simplified form. The answer is... 2.45/2.5x10^17m^-2 (m is meters) -what is the correct form to express this answer?
17. ### Impossible Question

OK yea I get it.. a) F = M(L^3)(T^2) b) p = ML/T^2
18. ### Impossible Question

From the following defining equations, determine the dimensions of the names physical quantities. Use L to represent the dimension length (distance), T to represent time and M to represent mass. a) force, F: F=ma, (where m is mass and a is acceleration) b) pressure, p: p=F/A, (where F is a...
19. ### Meters negative cubed?

OK but.. I have to do a calculation multiplying m and m^-3 and I don't know what unit to use for the answer. Say..5m*5m^-3= 25..what unit? Also, when you say "per meter cubed", are you talking about m^-3? or m*m^-3? Thanks for your response.
20. ### Issue with sig figs

Express the answer with the correct units and to the correct number of significant digits: 4pi/3(6495 kg/m^3)(0.026m)^3 -I know that the units in the answer would be kg because the m^3's will cancel. -It is the sig figs that are giving me trouble. (perhaps the "pi" is screwing me up)...
21. ### Meters negative cubed?

What would meters*meters^-3 be? Ex: 5.1*10^-5m(1.314*10^18m^-4) [m=meters]
22. ### Impossible question

I still don't think I understand because this does not seem correct but.. a) F=M*d(L/T)/dT ? b) p=M*d(L/T)/dT/L^2 ?
23. ### Impossible question

OK so.. a) would be.. F=M(deltaL/deltaT) ? b) how can I define A using only L, M or T?
24. ### Impossible question

From the following defining equations, determine the dimensions of the names physical quantities. Use L to represent the dimension length (distance), T to represent time and M to represent mass. a) force, F: F=ma, (where m is mass and a is acceleration) b) pressure, p: p=F/A...