Recent content by 07triumphd675

Homework Statement When 10.00 mL of a solution of strong acid is mixed with 100.00 mL of a solution of weak base in a coffee-cup calorimeter, the temperature falls from 25.7oC to 20.7oC. Determine q for the acid-base reaction, assuming that the liquida have densities of 1.00 g/mL and the same...

Ohhh so add Ax + Bx + Cx and then Ay + By + Cy and then use the Pythagorean theorem accordingly. Wala. Thank-you!

Very simple Vector Problem -- confused by 3 vectors... Homework Statement A commuter plane starts from an airport and takes the route: It first flies to City A located 175 km away in a direction of 30 degrees north of east. Then it flies for 150 km 20 degrees west of north to City B. Finally...

Is Vo supposed to be 40 m/ 8.5 s to get 4.71 m/s initial velocity?

Ahh okay. I got it now. So solving for T using the first kinematics equation: Vf = 0 m/s and Vo = 100 m/s Vf = Vo + at 0 = 100m/s + (-5 m/s^2)(T) -100 m/s = (-5 m/s^2)(T) -100 m/s / -5 m/s^2 = T T= 20 s Using T then, plug it back into the second kinematics formula to find the distance...

Kinematics -- How do I apply them to different problems? Homework Statement A Jet plane lands with a speed of 100 m/s and can accelerate at a maximum rate of -5.00 m/s^2 as it comes to a rest. A) From the instant the plane touches the runway, what is the min. time needed before it can come...

Sorry to bring this post back from the dead -- but I'm doing this problem right now, and is V0 supposed to be 0? If I use formula VFinal: 2.80 m/s = V0 + AT (A being unknown at this point) and T being 8.5 seconds... I'm left with a mad scramble of algebra where V0 = .33m-A I'm constantly...