Physics, 24.04.2020 16:00 hannaboo53

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.

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 03:50

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

Answers: 3

Answer

Physics, 22.06.2019 06:00

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Answers: 1

Answer

Physics, 22.06.2019 20:00

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm

Answers: 1

Answer

Physics, 22.06.2019 23:30

The photo above shows oil and vinegar in a pitcher. the top make a claim about about the density of the vinegar compared to the density of the oil summarize the evidence to support the claim and explain your reasoning

Answers: 3

Answer

You know the right answer?

On a sunny day with no wind, a balloon is filled with helium and floats away into the sky. Eventuall...

Questions