Sebuah kolom udara memiliki panjang 40cm. Jika garpu kala mempunyai frekuensi 320Hz, maka besarnya cepat rambat gelombang bunyi diudara pada saat resonasi pertama adalahm/s.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Madison pushes with a 210-n horizontal force on a 24-kg crate of coffee resting on a warehouse floor. the force of friction on the crate is 74 n. what is the acceleration?

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.