Physics
Physics, 11.11.2019 20:31, anaikad

On a sunny day with no wind, a balloon is filled with helium and floats away into the sky. eventually, the balloon pops. three cases of an identical balloon. in case a, the net pressure above the balloon points down, and the net pressure below the balloon points upward with a larger magnitude. in case b, the net lateral pressure is represented by several horizontal arrows on each side of the balloon pointing toward the balloon. in case c, the external pressure is represented by several arrows surrounding the balloon pointing inward and perpedicular to the balloon's surface. the internal pressure is represented by several arrows of greater magnitude inside the balloon that point radially outward. which case explains why the balloon pops at high elevation?

case a: the net pressure acting upward and downward on the balloon squeezes it until it bursts.

case b: the net lateral pressure squeezes the balloon until it bursts.

case c: the pressure inside the balloon is greater than the pressure outside the balloon, causing the balloon to expand until it bursts.

answer
Answers: 3

Other questions on the subject: Physics

image
Physics, 21.06.2019 22:20, kl8774
Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)
Answers: 1
image
Physics, 22.06.2019 15:00, banna01man
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
Answers: 2
image
Physics, 22.06.2019 18:00, maren17
Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
Answers: 3
image
Physics, 22.06.2019 22:40, taniyahreggienae
Which of the following is a direct benefit of the use of assembly lines in production a. laws against theft fraud and coercion are needed to protect free choice. b. the government needs to plan efficient outcomes. c. competition among producers by itself cannot ensure a wide range of consumer choices. d. works pressure the government to guarantee minimum wages
Answers: 2
Do you know the correct answer?
On a sunny day with no wind, a balloon is filled with helium and floats away into the sky. eventuall...

Questions in other subjects:

Konu
Mathematics, 17.07.2019 03:00
Konu
Mathematics, 17.07.2019 03:00