Which of the following is a simple machine? a. wedge b. meat grinder c. car d. bicycle

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?

The ozone hole appears in antarctica during