Recent content by spokorne

Homework Statement What are the three longest wavelengths for standing sound waves in a 128-cm-long tube that is (a) open at both ends and (b) open at one end, closed at the other? Homework Equations W=V/F The Attempt at a Solution 128 cm because nothing bigger could fit in the tube

A 10%-efficient car engine accelerates the 1700 kg car from rest to 18 m/s. How much energy is transferred to the engine by burning gasoline? What should be my first step in attempting this problem?

That's what I did previously and then then i found the difference in the two and it was incorrect

how do you go about doing that?

i tried making them into triangles and then using the lengths as the force. then i figured out the upward force and minused the downard force to find the total vertical force but it isn't right

I've been stuck on this problem for too long and need help. Please explain the answer if possible. F1 has a magnitude of 8.80 n and is directed at an angle of \alpha= 65.0 above the negative x-axis in the second quadrant. F2 has a magnitude of 6.40 N and is directed at an angle of \beta =...