A 1-kg mass at the Earth's surface weighs how much

In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.