Two unknown materials have a coefficient of kinetic friction of 1.3. Without any further information, which of the following options is most likely to be the coefficient of static friction? A. 1.2
B. 1.7
C. -1.3
D. 0

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

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.)

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?