Recent content by Ashford

Ok this is what i got probably wrong. V=\pi (integral) [x2-1] dy with the lower limit of the integral being 0 and the top being 2

I've graphed it, but that still doesn't get me any where I don't know which integral to set it up with.

Ok, I've done that but I still don't know which equation to use and how to set it up.

Homework Statement Set up a definite integral that could be evaluated to find the volume of the solid that results when the region enclosed by the curves y=(x^2)-1, x=2, and y=0 is revolved about the y-axis. (doesn't have to be solved) I have look at my book for help and I'm stuck.

Homework Statement Find the volume of the solid whose base is the region in the first quadrant bounded by the curves y=x^2 and y=x, and whose cross sections perpendicular to the x-axis are squares. No idea what to do here

Homework Statement Find the Maximum and Minimum of the following equation. r=2-2cos(\Theta) The Attempt at a Solution Max- 2-2 cos (0\pi)=0 (0,0\pi);(0,2\pi) Min 2-2cos(\pi)=4 (4,\pi) Do i just have these backwards?

Homework Statement Find the forces (Fa and Fb) need to support the diving board drawn below. Inlcude directions for each force. http://img171.imageshack.us/img171/4923/physicsisgayea1.th.jpg Homework Equations Don't knowThe Attempt at a Solution Was absent when we went over this type of...

3. A certain Spring will stretch 5.0 cm when a force of 12 N is applied to it. a. Calculate its spring constant in its elastic region. I got K=F/X so 12/.5 which comes out to be 2.4 b. If a force of 25 N were applied to the same spring, how much would it stretch? I got x = f/K so...

Homework Statement A piece of cork has a denisty of 0.25 g/cc. What is its specific gravity? Homework Equations SG = Psubstance / PH20 The Attempt at a Solution I have no idea. was sick from class day of lesson.

Homework Statement Divers in Acapulco, Mexico, leap from a point 36 m above the sea. What is their velocity when they enter the water? Homework Equations V^2=u^2+2as, probably wrong. The Attempt at a Solution s=36, u= 0, Find Final Velocity, a= -9.8 , I get some ridiculous...

then distance = 120(1.5), Which equals 180 km. Thank you for the help I didn't even think of it like that.

Homework Statement A police car leaves in pursuit of a holdup car 0.50 h after the latter has left the scene of the crime at 120 km/h. How fast must the police car go if it is to catch up with the holdup car in 1.00h? Homework EquationsI'm thinking Vf=Vo+at? i must be wrong, I can't seem to...