A student wishes to investigate the relationship between the temperature and volume of a gas. Which of the following scenarios would be most effective in determining this relationship? A.
Measure the pressure of the air in a tire on a cold day, a warm day, and a hot day.

B.
Stretch a balloon over the top of a beaker filled with baking soda and vinegar and observe how the balloon changes volume.

C.
Inflate one ballooon to a large volume and another balloon to a small volume. Measure the temperature of the air released from both balloons.

D.
Measure the volume of a balloon filled with room temperature air. Place the balloon in a freezer for an hour, and then measure its volume again.

Niobium forms a substitutional solid solution with vanadium. compute the number of niobium atoms per cubic centimeter for a niobium-vanadium alloy that contains 24 wt% nb and 76 wt% v. the densities of pure niobium and vanadium are 8.57 and 6.10 g/cm3, respectively

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

If forces acting on an object are unbalanced. true or false