The distance between the 2nd compression and the 3rd compression in a longitudinal wave is 200 cm. Find the wavelength of the wave. I need the answer with working and formula..
Class - 8, Ch:13 - Sound, NCERT, CBSE

Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

Ineed the answer to question 1 , i’m desperate

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z