A teacher took two latex balloons and blew them up with helium gas to the same size. She took one and labeled it Balloon A and placed it in a -15o C freezer. The second one she labeled BALLOON B, and she took it outside and tied it to the railing in the sun on a 30o 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 because the molecules will gain energy and move further apart.
Balloon B will have decreased in size because the molecules will lose energy and move closer together.
Balloon A will have decreased in size because the molecules will lose energy and move closer together.
Both balloons will be the same size because they will reach the same temperature as their environment and will be in thermal equilibrium with no molecules moving.
Answers: 3
Physics, 22.06.2019 18:10, coryowens44
Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)
Answers: 1
Physics, 22.06.2019 18:30, leslylinares454
Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.
Answers: 1
Physics, 22.06.2019 21:00, violetagamez2
Identify some abiotic characteristics of the tundra biome.
Answers: 3
Physics, 23.06.2019 00:00, pchisholm100
You are standing on a boat. which of the following strategies will make the boat start moving? a. pushing the mast b. throwing some cargo out of the boat c. pushing the front ofthe boat d. pushing another passenger
Answers: 3
A teacher took two latex balloons and blew them up with helium gas to the same size. She took one an...
Mathematics, 15.12.2020 21:00
History, 15.12.2020 21:00
English, 15.12.2020 21:00
Mathematics, 15.12.2020 21:00
Social Studies, 15.12.2020 21:00
Physics, 15.12.2020 21:00
Physics, 15.12.2020 21:00