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

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen