A standing wave is generated by a 90 Hz source on a 1.8 m long string as shown. a) What is the wavelength of the wave?
b) What is the speed of the wave on the string?

Determine the maximum r-value of the polar equation r =3+3 cos 0

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.