The frequency of a sound wave in water is 15,000 hz, and the sound wave travels through water at a speed of 1,500 m/s. what is the wavelength?

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Diamond will scratch quartz. true or false

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.