Select the correct answer. which chemical reaction absorbs energy? a. photosynthesis b. explosion c. current produced by a battery d. combustion of fuels e. activated hand warmers

An observer that stands still as the electron moves by him, will observe

Aplane takes off from an airport and flies to town a, located d1 = 215 km from the airport in the direction 20.0° north of east. the plane then flies to town b, located d2 = 230 km at 30.0° west of north from town a. use graphical methods to determine the distance and direction from town b to the airport. (enter the distance in km and the direction in degrees south of west.)

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?