Answer:
B
Explanation:
It is important to only test one variable at a time because you need to be able to disprove or prove a problem with just one independent variable. When you have several variables in the experiment, it would be impossible to know which variable honestly caused the end result.
Sound is made when air molecules. Vibrate and move in a wave pattern, so sound moves in waves of compressions and refractions (expansion).
Hope this helps! :)
Answer:
"A hydraulic turbine converts the energy of flowing water into mechanical energy. A hydroelectric generator converts this mechanical energy into electricity.
Explanation:
HOPE THIS HELP
PICK ME AS THE BRAINLIEST
Assuming that the number of mols are constant for both conditions:
![\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}](https://tex.z-dn.net/?f=%20%5Cfrac%7BP_1V_1%7D%7BT_1%7D%20%3D%20%20%5Cfrac%7BP_2V_2%7D%7BT_2%7D)
Now you plug in the given values. V_1 is the unknown.
![\frac{0.50 atm*V_1}{325K} = \frac{1.2 atm* 48 L}{230K} ](https://tex.z-dn.net/?f=%5Cfrac%7B0.50%20atm%2AV_1%7D%7B325K%7D%20%3D%20%5Cfrac%7B1.2%20atm%2A%2048%20L%7D%7B230K%7D%0A)
Separate V_1
![V_1= \frac{1.2 atm* 48 L * 325K }{230K*0.50 atm }](https://tex.z-dn.net/?f=V_1%3D%20%5Cfrac%7B1.2%20atm%2A%2048%20L%20%2A%20325K%20%7D%7B230K%2A0.50%20atm%20%7D)
V= 162.782608696 L
There are 2 sig figs
V= 160 L