the waves used by a microwave oven to cook food have a frequency of 2.45 x 10^9 Hz. Calculate the wavelength

Jackson is designing a new heater, and he wants to experiment with different thermally conductive materials. which of these materials would be useful in conducting heat?

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

What’s #16 asking me and how do i solve it?