6. A tuning fork, frequency 384 Hz, produces resonance with a closed tube 20.0 cm long. What is the speed of sound? 7. What is the frequency of a tuning fork that resonates with an open tube 25.0 cm long. Speed of sound that day is 343 m/s

Please show the work

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.