Question

1. The three tanks shown above are filled with water to an equal
depth. All the tanks have an equal height. Tank A has the least
surface area at the bottom, tank B has the greatest and tank C has
the middle area at the bottom.

(Select T-True, F-False, G-Greater than, L-Less than, E-Equal to.
If the first is F the second L and the rest G, enter

FLGGGG).

A) The total force exerted by the water on the bottom of tank B is
... the total force exerted by the water on the bottom of tank
C

B) The pressure at the bottom of tank B is ... the pressure at the
bottom of tank C

C) The air pressure right at the top surface of water in tank C is
.... the air pressure right at the top surface of water in tank
B

D) The pressure exerted on the bottom of tank B is greater than for
the other tanks.

E) The water in tank B exerts a downward component of force on the
sides of the tank.

2. Find the initial acceleration downwards of an
iron ball of density 8.7 g/cm^{3} when placed under water and released from
rest.

3. A spherically shaped balloon has a radius of 9.90m, and is
filled with helium. How large a mass of cargo can it lift, assuming
that the skin and structure of the balloon have a mass of 930kg?
Neglect the bouyant force on the cargo volume itself. The density
of air is 1.29 kg/m^{3} and the density of helium is 0.179
kg/m^{3}.

Answer #1

pressure = density * g * height

so,

pressure is not dependent of the area it's dependent on the height

A) The total force exerted by the water on the bottom of tank B
is **Greater than** the total force exerted by the
water on the bottom of tank C

B) The pressure at the bottom of tank B is **Equal
to** the pressure at the bottom of tank C

C) The air pressure right at the top surface of water in tank C is
**Equal to** the air pressure right at the top surface
of water in tank B

D) The pressure exerted on the bottom of tank B is greater than for
the other tanks **False**

E) The water in tank B exerts a downward component of force on the
sides of the tank **False**

***please post only 1 question in a single
post**

A spherically shaped balloon has a radius of 8.14m, and is
filled with helium. How large a mass of cargo can it lift, assuming
that the skin and structure of the balloon have a mass of 872kg?
Neglect the bouyant force on the cargo volume itself. The density
of air is 1.29 kg/m3 and the density of helium is 0.179 kg/m3.

A spherical balloon has a radius of 6.35 m and is filled with
helium. The density of helium is 0.179 kg/m3, and the density of
air is 1.29 kg/m3. The skin and structure of the balloon has a mass
of 970 kg . Neglect the buoyant force on the cargo volume
itself.
Determine the largest mass of cargo the balloon can lift.

A spherical balloon has a radius of 7.15 m and is filled with
helium. The density of helium is 0.179 kg/m3, and the density of
air is 1.29 kg/m3. The skin and structure of the balloon has a mass
of 900 kg . Neglect the buoyant force on the cargo volume itself.
Part A Determine the largest mass of cargo the balloon can
lift.

A balloon filled with helium has a volume of 25 m3
and is released from rest in air of density 1.3 kg m-3.
Determine the initial resultant force on it if the weight of the
balloon and its contents is 300 N.

A tank whose bottom is a mirror is filled with water to a depth
of 20.2cm. A small fish floats motionless 7.40cm
under the surface of the water. Use the following index of
refraction: water = 1.33 and air = 1.00.
a) What is the apparent depth of the reflection of the
fish in the bottom of the tank when viewed from directly above?
b) When looking into the tank, at what angle θ with
respect to the normal (in...

A balloon filled with helium travels at a constant velocity in
air (1.22 kg.m^3), The helium in the balloon has a volume 3.5 m^3
and density of 0.22 km/m^s. a. What is the magnitude of the buoyant
force exerted by the air on the balloon? b. What is the mass of the
balloon including the helium?

In a huge oil tanker, salt water has flooded an oil tank to a
depth of h2 = 4.85 m. On top of the water is a layer of oil h1 =
7.50 m deep, as in the cross-sectional view of the tank as shown in
the figure. The oil has a density of 0.700 g/cm3. Find the pressure
at the bottom of the tank. (Take 1,025 kg/m3 as the density of salt
water.)
Pa
Calculate the pressure on the...

A 3.2 kg balloon is filled with helium. The balloon is a sphere
with a radius of 4.9 m. Density helium = 0.179kg/m3 Volume of a
sphere = 4/3 πr3 (20 points)(a) What is the volume of the
balloon?(b) What is the weight of the helium inside? (c) What is
the buoyant force on the balloon as it floats in air?(d) What is
the total downward force on the balloon?

Submarines change their depth by adding or removing air from
rigid ballast tanks, thereby displacing seawater in the tanks.
Consider a submarine that has a 1,200 m^3 ballast tank originally
partially filled with 120 m^3 of air at 2,175 kPa. and 15 degrees
C. For the submarine to surface, air at 2,175 kPa and 15 degrees C
is pumped into the ballast tank in such a way that the temperature
and pressure of the air remain constant until it is...

A light spring with a spring constant of 107.0 N/m rests
vertically on the table, as shown in (a) below. A 2.00 g balloon is
filled with helium (0°C and 1 atm pressure) to a volume of 4.50 m3
and connected to the spring, causing the spring to stretch, as
shown in (b) below. How much does the spring stretch when the
system is in equilibrium. (The density of helium is 0.179 kg/m3.
The magnitude of the spring force equals...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 15 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago