A hot-air balloon has a volume of 2800 m3m3 . The balloon fabric (the envelope) weighs 840 NN . The basket with gear and full propane tanks weighs 1500 NN . Part A If the balloon can barely lift an additional 2800 NN of passengers, breakfast, and champagne when the outside air density is 1.23 kg/m3kg/m3, what is the average density of the heated gases in the envelope

Which principle states: "geologic processes taking place on earth today operated similarly in the past and can be used to explain past geologic events"? a. lateral continuity

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

To a fellow spongebob-ian i will be glad to , the cheetah didn't get far on purpose because he's a cheetah  ( ͡° ͜ʖ ͡°)

Amicroscope, because these cells are so small that you would not be able to see them, or what they attack without it.