What is the speed of a wave with 3Hz frequency and a wavelength of 9 m

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.