The pressure gauge on a 20.0 m 3 20.0m3 tank of nitrogen at 25°C reads 10.0 bar. Estimate the mass of nitrogen in the tank by (a) direct solution of the ideal-gas equation of state and (b) conversion from standard conditions

Sorry my friend i don't know the answer. i am just in 6th

The correct choice is c

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