An airplane travels 70 miles per hour. The magnitude of the resultant velocity of the plane is 90 miles per hour, if it encounters a 20 mile per hour headwind.
True
False

Write a question about how changing temperature affects the gas inside the sports ball

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?