Grace leaves home and rides a distance of 60 km. It took her 3 hours. What is her
speed?

What causes most sediment to wash or fall into a river

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!

Which phrase best defines a mountain eee