Recent content by BeiW

In that case, would I add the .12m to the .13 for h1?

Homework Statement A hydraulic lift is used to jack a 970 kg car .12m off the floor. The diameter of the output piston is .18 m, and the input force is 270 N. If the input piston moves .13 m in each stroke, how high does the car move up for each stroke? 2-3. Relevant equations and attempt at...

I'm a total physics noob, and as I was reading my physics textbook, I came upon this stump. I know that for waves, Vmax2=(A)(square root of k/m). Does this apply to a pendulum because its motion is wavelike? If so, how does the spring constant k play into this when the pendulum has no spring?

Homework Statement Estimate the air pressure inside a category 5 hurricane, where the wind speed is 300 km/hr. Homework Equations P=F/A The Attempt at a Solution I converted km/hr to m/s. V=83.33m/s. That's all I can get. I don't know the area of a category 5 hurricane or the...

I just checked the book again, and you're right. It actually says 220cm. Thanks! :)

So the tire area is .0022m2? Then for 4 tires, the area is .0088m2. m= (PA)/g = (2.4 x 105)(.0088) / (9.8) = 215.510 kg If you round that, it should be 2.2 x 102 kg, but the real answer is 2.2 x 103... What am I missing?

Gauge Pressure of Tires -- find car mass Homework Statement The gauge pressure in each of the four tires of an automobile is 240 kPa. If each tire has a "footprint" of 22.0 cm-squared, estimate mass of the car. P=240 kPa A=22.0 cm-squared g=9.8 m/s^2 Homework Equations P=F/A 1 atm =...