Stars go through a life cycle. About 90% of all stars are in the main sequence period of the life cycle. Stars are stable during the main sequence period of the life cycle. Why?

The amount of randomness of the atoms in a system is an indication of the

A 1,800kg car has a momentum of - 50,400kgm/s. What is the velocity of the car?

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.032.03 times a second. A tack is stuck in the tire at a distance of 0.357 m0.357 m from the rotation axis.

After a long night of cramming for a test, your college roommate hits his head forcefully against the wall of your room in despair. According to Newton 3d Law, as he exerts a force against the wall, there must be an equal and opposite force.

The total amount of energy in a closed system stays the same. t/f

When lava cools, what type of Rock forms?

A uniformly charged conducting sphere of 1.1 m diameter has a surface charge density of 6.2 µC/m2. (a) Find the net charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?

A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 12 A, while that of the vacuum cleaner is 5.7 A. Determine the power consumed by (a) the blow-dryer and (b) the vacuum cleaner.

4. A 40 kg child and a 30 kg child want to balance themselves on a 4 meter, 50 kilogramn see-saw. Where should the fulcrum be placed?

A 2-kg object is dropped from a height of 1000 m. What is the force of air resistance on the object when it reaches terminal velocity