Which of the following is not an effect of el niño?
a.
mudslides
c.
earthquakes
b.
droughts
d.
hurricanes

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h