Alinacher took two latex batoom and bow them up with him as to the same size. She took one and labeled Balloon A and placed in a -18" Croze. The second are the BALLOON Band the and we ralling in the sun on a 30°C day. After a half hour, she had the students measure the circumference of each balloon
Which TWO outcomes do you predict the students will find and why?
Balloon A will have increased in size because the molecules will gain energy and move further apart.
Balloon B will have increased in size became the molecules will gain energy and move further apart
Balloon B will have decreased in size because the molecules will lone energy and move doser together
J Balloon A will have decreased in size because the molecules will fone energy and move doser together,
Both balloons will be the same size because they will reach the same temperature as their environment and will be in thermal equilibriurn with no molecules moving

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)

Clothing made of several thin layers of fabric with trapped air in between, often called ski clothing, is commonly used in cold climates because it is light, fashionable, and a very effective thermal insulator. so it is no surprise that such clothing has largely replaced thickand heavy old-fashioned coats. (a) consider a jacket made of five layers of 0.1-mm-thick synthetic fabric (k = 0.13 w/m·°c) with 1.5-mm-thick air space (k = 0.026 w/m·°c) between the layers. assuming the inner surface temperature of the jacket to be 28°c and the surface area to be 1.25 m2, determine the rate of heat loss through the jacket when the temperature of the outdoors is 0°c and the heat transfer coefficient at the outer surface is 25 w/m2·°c. (b) what would your response be if the jacket is made of a single layer of 0.5-mm-thick synthetic fabric? what should be the thickness of a wool fabric (k = 0.035 w/m·°c) if the person is to achieve the same level of thermal comfort wearing a thick wool coat instead of a five-layer ski jacket?

What quantity do units represent in value