Recent content by biamin

Thanks for the nudge. This is the part I struggle with I guess I haven't learned the kinematic relationships very well. So, if velocity isn't constant then it has to be dependent on the time & displacement. Would a better equation be s = ∫240t?

Homework Statement If an Airplane is to attain a take off velocity of 75 m/s after traveling 240 m along the flight deck of an aircraft carrier. Find the Aircrafts acceleration(asssumed constant) Homework Equations S=∫vdt V=∫adt V=75 m/s S=240m t(time)=0 The Attempt at a...

Sorry, Typo. should have been 1250 deg. F.

thanks, just sorted out the problem.

forgot to mention m = mass

Homework Statement If 7.3 lbs of copper at 12540 deg. F. is added to .52 ft^3 of water at 35 deg. F. in an insulated container, find the equilibrium temperature. Homework Equations I Think I need to use: delta Q= c*m(Temp. final - Temp. original) c.c. = .092 BTU/lb (specific heat...

Thanks Cepheid, The specific heat capacity was the bit of information I was needing to add to the equation.

unfortunately the problem gives no mass for the steel ball. I am not sure how to approach the problem. The only other formula I can think of to use is the one for potential energy (mass*gravity*height) but that has a mass in it as well. Any thoughts?

A steel ball falls from a height of 20m into a pile of sand. If 1/2 the energy ends up i as heat in the ball,m how much is the ball heated? I am starting out with the work equation. Work = force * displacement. Work = 9.81m/s^2(20m) Work = 196.2 m^2/s^2 I am having trouble relating...