Their average speed during the trip is 53 km/ hr approximately
Explanation: The family traveled 80 km/hr for an hour and then trabeled 40 km/ hr for 2 hours. So they traveled 80 km in one hour then 80 km in the next 2 hours. Total they traveled 160 km in 3 hours.
Average speed = distance traveled/ taken time
= 160/3 = 53.33
In order to determine if the ion is positively charged or negatively charged
D. the pressure is not high enough for the electrical current to flow in the right direction and the battery has stalled
Answer:
the volume of the gas will decrease
