Which type of border shows the division between Sonora and Chihuahua? National border
State border
Physical boundary
Natural boundary

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

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant