Recent content by physics_freak

is it (+/-) sqrt of 1-x^2?

What is the range of z if I integrate w.r.t z?

Homework Statement Calculate the volume of the space enclosed by three cylinders x2+y2=1, x2+z2=1, and y2+z2=1. Homework Equations Triple Integral. The Attempt at a Solution change to polar coordinates

Homework Statement Estimate the radius of a helium filled balloon if a load of 180 kg (including the weight of the empty balloon) is to be lifted. Density of helium is 0.179 kg/m^3 Homework Equations F=rho*g*V The Attempt at a Solution F=\rhogV r=3.22m

Homework Statement A box with mass of 45 kg is placed on a flat board. It starts moving when the board is inclined at 27 degrees. If the mass is doubled, what is the minimum angle needed so that it starts moving? Homework Equations Frictional force = mgsin\theta The Attempt at a...