A balloon is released from a tall building. The total mass of the balloon including the...

A balloon is released from a tall building. The total mass of the balloon including the enclosed gas is 2.0 kg. Its volume is 5.0 m3. The density of air is 1.3 kg/m3. Will the balloon rise, fall, or remain stationary; and why?

(A) The balloon will fall because the upward buoyant force is less than its weight.

(B) The balloon will rise because the upward buoyant force is greater than its weight.

(D) The balloon will fall because its density is greater than that of air.

(E) The balloon will remain stationary because its density is less than that of air.

Solutions

Expert Solution

mass of baloon=2 kg '

weight=2*9.8=19.6 N

volume of air enclosed=5 m^3

buoyant force=5*1.3*9.8=63.7 N'

as buoyant force>weight

so (B) The balloon will rise because the upward buoyant force is greater than its weight.

genius_generous answered 2 years ago

Next > < Previous

Related Solutions

A hot air balloon has a total mass of 750 kg (not including the air in...

A hot air balloon has a total mass of 750 kg (not including the air in the balloon) and holds a volume of 2.8 x 10^6 L of air. Assume the density of the air outside the balloon to be 1.2 kg/m^3 at a temperature of 20 degrees C and the air pressure is 101.3 kPa inside and outside the balloon. What is the minimum temperature for the air in the balloon to allow for the balloon to float? You...

An object of mass 0.50 kg is released from the top of a building of height...

An object of mass 0.50 kg is released from the top of a building of height 2 m. The object experiences a horizontal constant force of 1.1 N due to a wind blowing parallel to the face of the building. (a) Find the time it takes for the object to strike the ground. _____s (b) What is the magnitude of the acceleration of the object? ______m/s2 (c) Through what horizontal distance does the object move before it hits the ground?...

The mass of a hot-air balloon and its cargo (not including the air inside) is 140...

The mass of a hot-air balloon and its cargo (not including the air inside) is 140 kg. The air outside is at 10.0°C and 101 kPa. The volume of the balloon is 490 m3. To what temperature must the air in the balloon be warmed before the balloon will lift off? (Air density at 10.0°C is 1.244 kg/m3.)

The mass of a hot-air balloon and its cargo (not including the air inside) is 220...

The mass of a hot-air balloon and its cargo (not including the air inside) is 220 kg. The air outside is at 10.0°C and 101 kPa. The volume of the balloon is 490 m3. To what temperature must the air in the balloon be warmed before the balloon will lift off? (Air density at 10.0°C is 1.244 kg/m3.) K

A hot air balloon of 25 m in diameter has a mass of 95 kg including...

A hot air balloon of 25 m in diameter has a mass of 95 kg including its cage when empty. This balloon is accelerating upward at an acceleration of 1 m/s^2 in the air at a location where the atmospheric pressure and temperature are 85 kPa and 13 C respectively while carrying 3 people with a mass of 70 kg each. Determine the average temperature of the air in the balloon assume equal pressure between the inside of the balloon...

A quarter is dropped from rest from the fifth floor of a very tall building. The...

A quarter is dropped from rest from the fifth floor of a very tall building. The speed of the quarter is v just before striking the ground. From what floor would the quarter have to be dropped from rest for the speed just before striking the ground to be approximately 2v? Assume equally spaced floors and ignore all air resistance effects to determine your answer. please focus on showing the process to achieve the answer, thank you

A rock is thrown from the edge of the top of a 5 m tall building...

A rock is thrown from the edge of the top of a 5 m tall building at angle of 45° above the horizontal. The rock strikes the ground a horizontal distance of 8 m from the base of the building. Assume that the ground is level and that the side of the building is vertical. Determine the speed with which the rock was throw

1 (a) A ball is launched from the ground toward a tall wall of a building...

1 (a) A ball is launched from the ground toward a tall wall of a building at initial speed v0 = 21 m/s at an angle of 39 degrees relative to the horizontal. The wall is at a distance of 29 m from the launch point. What is the magnitude of the ball's velocity vector as it hits the wall? Your answer should be in m/s, but enter only the numerical part in the answer box. (b) A ball is...

A brick falls from rest from the roof of a tall building. Two seconds later a...

A brick falls from rest from the roof of a tall building. Two seconds later a ball is thrown vertically downward with a velocity of 75m/s how far below the roof does the ball hit the brick?

A ball is released from the top of the building and reaches the ground after 5...

A ball is released from the top of the building and reaches the ground after 5 seconds (15 points). a) What is the velocity of the ball when it hits the ground? b) What is the height of the building? c) How much the ball falls in the last 2 seconds of the motion?

Subjects