1.) If we increase the frequency to 3.0 Hz and amplitude= 0.75 cm with low
tension, describe the number of waves produced? (3)

Abaseball picther can throw a ball at about 90 miles per hour, v = 40 m/s, on solid rock ground. we now put him into space. when he throws the ball, which weighs mb = 0.15 kg moves away from himat the same speed. how long does it take the ball thrown in space to travel the 30 meters to the batter? he weighs mp = 100kg

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.