Changing the amplitude of a sound waves changes dat what 1.how loud da sound is
2.the tone of the sound
3.the pitch of the sound
4.how fast the sound travels

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative

How many grams of iron can be made from 16.5 grams of fe2o3