A2.00 m long string is vibrated 5.00 times every second to create a standing wave with 2 antinodes.
1.) what is the speed of the waves creating the standing wave?
2.) what is the fundamental frequency of the string?
3.) what frequency will produce resonance with 3 antinodes?

A1,200 kg car is accelerated at 3.7 m/s2. what force was needed to produce this acceleration? a. 4,440 n b. 324.3 n c. 4,388 n d. 304.3 n

Which is not true about oxygen-17 and oxygen-18?

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.