Recent content by xc630

Homework Statement What is the lift (in Newtons) due to Bernoulli's principle on a wing of area...m^2 if the air passes over the top and bottom surfaces at speeds of ...m/sand ...m/s, respectively? I've given the values but I just want to know if I'm doing the problem right conceptually...

Homework Statement You are driving along a straight section of roadway (x-axis). You spot a police officer and apply the brakes, slowing down at a constant rate. Your positions (in meters) at successive time intervals of 0.435 s are tabulated below as function of time. (1) Calculate the...

I never learned overall effeciency equals the product of sub reactions' effeiciencies. So I solved for x and and got 87.9 percent or 88 percent efficiency for the third reaction. Thank you mrjeffy321

so the efficiency would be 75%? this is the precent yield for the overall process correct?

so the efficiency would be 75%? this is the precent yield for the overall process correct?

Hi I still do not understand how to find the percent yield in general as the yields of the frist two reactions were given by the problem. Can someone please explain. All I was told was that percent yield was actual yield over theoretical. Thanks.

Hello I desperately need help with this chemistry problem. I know this is a physics site but it was the closest I could get to for chemistry. I would appreciate any help at all. Acetaminophen (C8H9O2N) is produced by the following three step synthesis: I. C6H5O3N (s) + 3 H2 (g) + HCL (aq)...

Hello I need osme help with these two problems. I was told the ansers but do not undersatnd how the answers were gotten. 1. The power dissipated in lifting a 2.0 kg ball vertically at 3.0m/s equals what? The answer is 59 W. ALl I know is that power equals Work/ delta T but there is no...

Hello I am having toruble solving this problem. I would appreciate any help. A 75 N block is pushed at 5.0 m/s up a ramp 6.0 m long to a platform 2.0 m high. If the coefficient of friction is 0.300 a) how much work was done? b) how much work was done aginst friction? c) how much work was...

What would I be solving for?

Hi I need soem help on thsi problem A 1500N block sits at rest on a ramp inclined at 40.0 degrees. The coeffeicients of starting and kinetic friction are 0.100 and there is a force of 250N applied up the ramp. I have to find the acceleration and net force. But how can I find the net force if...

Ok thanky you I got 530 N for the Fa, 11m/s for the velcoty and 130m for the distance. I have a question with this next problem though. A 1500N block sits at rest on a ramp inclined at 40.0 degrees. The coeffeicients of starting and kinetic friction are 0.100 and there is a force of 250N...

Hello i am having toruble with this problem. A 24 kg block is pushed along a horizontal surface with an acceleration of 2.0 m/s^2. The coeficient of friction is 0.25 and teh block starts at 1.0m/s. Find: the force being applied horizontally, the velocity after 5.0 s, and the distance moved...