An archer uses an average force of 50.0 N to draw the string of his bow through a distance of 0.412 m. Then, he
fires a 297 g arrow straight up into the air. Make sure you
show all your work for all of your answers.

Galileo was the first to notice that the moon has craters, valleys, and mountains. how might this have changed people's perception of the moon at the time?

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?