A fixed mass of air is initially at 280.442 K and 168.109 kPa. It is heated to a state of 491.652 K and 303.508 kPa. What is the ratio of final to initial specific volume (final specific volume/initial specific volume)

In all trials, the magnitude of the final velocity for g1 + g2 was less than the magnitude of any initial velocity. as mass increased, what happened to the velocity? the velocity decreased. the velocity increased. the velocity of g1 + g2 could not be measured. the velocity was not affected by the mass increase.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive