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.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.