(Figure 1) shows a container with a cross-section area of 15 cm^2 in which a layer of water floats on top of a layer of mercury. A 1.0 kg wood block with a cross-section area of 10 cm^2 floats on the water. The water depth, measured from the bottom of the block, is 25 cm. A pressure gauge at the bottom of the container reads 26 kPa.

A container with vertical walls is filled with a layer of mercury of height h at the bottom and a layer of water above it. A rectangular block of 1.0 kilogram floats on the water. The distance from the mercury layer to the bottom side of the block is 25 centimeters. The area of the horizontal cross section of the block is 10 square centimeters. The area of the bottom of the container is 15 square centimeters. A pressure gauge is located at the bottom of the container.
Part A
What is the depth dm of the mercury? Use ρw = 1000 kg/m3 as the density of water and ρm = 13,600 kg/m3 as the density of mercury.

Hope this answer helps you

Answer:

In be either B or C ! :))

Explanation:

Ik its not much but hope it helped for now :D

The torque required, obtained by finding the product of the moment of inertia and the angular acceleration are as follows;

The torque, τ, that must be applied to the object to give it an angular acceleration of 1.00 rad/s² are;

Part A

Part B

Part C

Angular acceleration is the rate of change of angular velocity with time.

The torque is found from the product of the moment of inertia and the angular acceleration, therefore;

τ = I·α

Where;

τ = The torque

I = The moment of inertia of the mass

α = The angular acceleration

The moment of inertia of a point mass is; I = m·r²

Part A

The mass rotating about the x-axis, m = 9.0 kg

The distance to the point mass, r = 1.0 m

Therefore;

Iₓ = 9.0 kg × (1.0 m)² = 9.0 kg·m²

At α = 1.00 rad/s², we get;

The torque that must be applied to give it an angular acceleration of 1.00 rad/s² if it is rotated about the x-axis is; 9.0 N·m

Part B

If it is rotated about the y-axis, we get;

m = 2.5 kg

r = 2.0 m

[tex]I_y[/tex] = 2.5 kg × (2.0 m)² = 10.0 kg·m²

Part C

The combined moment of inertia of the point masses are therefore;

[tex]I_z[/tex] = (9.0 + 10.0) kg·m² = 19.0 kg·m²

The torque required is therefore;

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Answer:

they will fly

Explanation:

yes flying is fun

The acceleration, net force, and normal force by the car at the top of hill A are 4.5  meter/second² , 3180 N and 3180 N.

The acceleration, net force, and normal force by the car at the top of hill B are 4.17  meter/second² , 3379N and 3379 N.

The acceleration, net force, and normal force by the car at the top of hill C are 4.0  meter/second² , 3480 N and 3480 N.

Centripetal acceleration is a characteristic of an object's motion along a circular path. Centripetal acceleration applies to any item travelling in a circle with an acceleration vector pointing in the direction of the circle's center.

On hill A;

The centripetal acceleration = v²/r = 6²/8 meter/second² = 4.5  meter/second² .

The net force = m(g -a) = 600 (9.8 - 4.5) N = 3180 N.

The  normal force = 3180 N

On hill B;

The centripetal acceleration = v²/r = 5²/6 meter/second² = 4.17 meter/second² .

The net force = m(g -a) = 600 (9.8 - 4.17) N = 3379 N.

The  normal force = 3379 N.

On hill A;

The centripetal acceleration = v²/r = 4²/4 meter/second² = 4.0 meter/second² .

The net force = m(g -a) = 600 (9.8 - 4.0) N = 3480 N.

The  normal force = 3480 N.

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The initial speed of the second ball is c. 26.8 m/s

Speed is the distance per unit time moved by an object/

Since the ball is a projectile, to find the initial speed of the second ball, we need to find the maximum height of the first ball using

h = u²sin²Ф/2g where

Substituting the values of the variables into the equation, we have

h = u²sin²Ф/2g

h = (32 m/s)²× (sin57°)²/(2 × 9.8 m/s²)

h = 1024 m²/s²× (0.8387)²/(19.6 m/s²)

h = 1024 m²/s²× (0.7034)/(19.6 m/s²)

h = 720.249 m²/s²/(19.6 m/s²)

h = 36.75 m

Now, since a second projectile is thrown vertically to the same maximum height, we need to find its initial speed.

Using the equation of motion v² = u² - 2gh where

Making u subject of the formula, we have

u = √(v² + 2gh)

Substituting the values of the variables into the equation, we have

u = √(v² + 2gh)

u = √[(0 m/s)² + 2 × 9.8 m/s² × 36.75 m]

u = √[0 m²/s² + 19.6 m/s² × 36.75 m]

u = √[720.3 m²/s²]

u = 26.84 m/s

u ≅ 26.8 m/s

So, the initial speed of the second ball is c. 26.8 m/s

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The total angle the tires rotate through during his trip is 8156 radian.

The study of shapes and their measurements falls under the umbrella of geometry, a subfield of mathematics. It also emphasises how the shapes are arranged in relation to one another and their spatial characteristics. We are aware that geometry is divided into 2D and 3D categories.

All geometrical shapes are first created by the intersection of points, lines, rays, and plane surfaces. The distance between the two lines is known as a "Angle" when the two lines or rays converge at a single location.

Given that:

A boy rides his bicycle 2.08 km.

The wheels have radius 25.5 cm.

So, perimeter of the wheel = 2πr = 2π×25.5 cm = 160.22 cm.

Total angle  the tires rotate through during his trip

= ( 2.08 km/ 160.22 cm)× 2π

=  8156 radian.

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When two items with different temperatures come in contact with one another, energy moves from the hotter (higher temperature) object to the cooler (lower temperature) object until both objects reach the same temperature.

Once the temperatures are identical, there is no net heat transfer since the quantity of heat transported from one object to the next and the amount of heat radiated are equal.

Temperature change is one of the main consequences of heat transfer: Cooling brings down the temperature while heating brings it up.

Experiments reveal that three factors—the change in the substance's temperature, its mass, and specific physical characteristics associated to the substance—have an impact on how much heat is transported to or from a substance.

Therefore, When two items with different temperatures come in contact with one another, energy moves from the hotter (higher temperature) object to the cooler (lower temperature) object until both objects reach the same temperature.

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A hungry polar bear does -40J of the work and stops the salmon. If the polar bear applied its force over 0.5m. The force is 80 Newton.

What is Force?

A force is an effect that can alter an object's motion according to physics. A force can cause an object with mass to accelerate when it changes its velocity, for as when it moves away from rest. An obvious way to describe force is as a push or a pull.

A force is a vector quantity since it has both magnitude and direction. It is calculated using the newton SI unit (N). Force is denoted by the letter F. (formerly P).

The net force acting on an object is equal to the rate at which its momentum varies over time, according to Newton's second law in its original formulation. This law says that an object's acceleration is constant if the object's mass is constant.

Therefore,  A hungry polar bear does -40J of the work and stops the salmon. If the polar bear applied its force over 0.5m. The force is 80 Newton.

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The height above the ground in which the vase is raised is 51.02 m.

The height above the ground in which the vase is raised is calculated by applying the formula for gravitational potential energy.

Gravitational potential energy of an object is the energy possessed by the object due to the object's position above the ground.

Mathematically, the formula for gravitational potential energy is given as;

P.E = mgh

where;

The given parameters include;

mass of the vase = 0.2 kg

potential energy of the vase = 100 J

acceleration due to gravity = 9.8 m/s²

h = P.E / mg

h = (100) / (0.2 x 9.8)

h = 51.02 m

Thus, the height of the vase is a function of the potential energy and mass of the vase.

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The complete question is below:

a 0.2 kg vase has a potential energy of 100j. What is the height of the vase?

When an object experiences balanced forces on Earth, it would be at rest (option A).

Balanced forces are those forces that are opposite in direction and equal in size. They are considered as a state of equilibrium. Balanced forces are unable to change the motion or direction of an object i.e. they keep an object moving at a constant velocity. 

When forces are balanced, they cancel each other out, resulting in no change in motion for the object they are acting on. Unbalanced forces do not cancel each other out, and result in a change in motion for the object they are acting on.

The characteristics of balanced forces are as follows:

This suggests that an object on Earth will remain at rest if it experiences balanced forces.

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The following describes a change to Earth’s surface due to weathering include the following below:

A. plants creating a crack in a rock formation

B. rocks along the beach being reshaped by wave action.

F. glaciers scraping rocks across the land

This is referred to as the process which involves the breaking down of rocks and minerals on Earths surface as a result of certain factors such as rain, glacier etc. They form cracks when they come in contact with rocks afterf a given period of time before they are disintegrated.

Weathering occurs when plants creating a crack in a rock formation and also when the rocks along the beach are being reshaped by wave action.It also involves the  glaciers scraping rocks across the land which is therefore the reason why option A, B and F was chosen as the correct choice.

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The options are:

A. plants creating a crack in a rock formation

B. rocks along the beach being reshaped by wave action

C. sand being blown to a new location by the wind

D. sediments moved from place to place by a river

E. rain washing soil down a steep hill

F. glaciers scraping rocks across the land

The gravitational force on planet X is one-eight (¹/₈) of the magnitude of gravitational force on planet Y.

The gravitational force on each planet is directly proportional to the product of mass of the planet and the tennis ball and inversely proportional to the square of the radius of the planets.

F = GmM/r²

where;

The gravitational force on planet X is written as;

F_X = Gm(mt) / r²

where;

The gravitational force on planet Y is written as;

F_y = G(½m)(mt) / (¼r)²

F_y = ½(Gm(mt) / (¹/₁₆ r²)

F_y = (16 Gm mt)/(2r²)

F_y = 8(G m(mt) ) / r²

F_y = 8(F_X)

F_X = ¹/₈(F_Y)

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Answer:

from high temperature to low temperature areas

Explanation:

If it is correct, could you please give me brainliest? I would really appreciate it! Thank you!

The two column headings describe controlled variable be: pressure and temperature.

Anything kept constant or constrained in a research study is referred to as a control variable. Despite not being relevant to the study's objectives, this variable is controlled because it might have an impact on the results.

Variables can be controlled either directly by maintaining their value throughout a study (for example, by maintaining a constant room temperature in an experiment) or indirectly by using techniques like randomization or statistical control (e.g., to account for participant characteristics like age in statistical tests). Research biases like omitted variable bias can be avoided by including control variables in your analysis.

In the case of Franscisco wants to investigate how changing the shape makes the same amount of ice melt faster or slower when placed in a water bath, the two column headings describe controlled variable be: pressure and temperature.

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Floods are the most common type of natural disaster, occurring when an overflow of water submerges normally dry land.

Floods are frequently caused in coastal areas by heavy rainfall, rapid snowmelt, or a storm surge from a tropical cyclone or tsunami.

Flooding has a negative impact on people's lives. Damage to property and infrastructure Road closures, erosion, and landslides are all possible.

It leads to destruction of houses and properties.

In order to control flooding, it is important to clear the gutters and have an adequate channel for water to pass.

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The period on the moon is longer. So, the option(D) is correct.

A basic pendulum is a machine in which the point mass is hung from a fixed support by a light, inextensible string. The mean position of a simple pendulum is shown by a vertical line flowing through a fixed support.

The length of the simple pendulum, abbreviated L, is the vertical distance between the point of suspension and the suspended body's center of mass (when it is in mean position). The resonant mechanism supporting this type of pendulum has a single resonant frequency.

Time period of a pendulum is given by: T = 2π√(l/g)

Where:  l =  length of the pendulum and g = acceleration due to gravity.

As the moon's gravity is one-sixth that of the earth, we can conclude from the expression of pendulum that  the period on the moon is longer.

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The person's weight during the entire elevator ride is equal to magnitude  of the normal force exerted by the elevator on the person.

Every day, we experience the typical force. For instance, when a book is placed on a table, the usual response force prevents the book from falling through the table, even though gravity is pulling the book downward. That implies that there is a force acting to push it upward. The word "normal force" refers to the force. Normal in this context refers to being perpendicular to the ground.

The person's apparent weight  during the entire elevator ride is equal to magnitude  of the normal force exerted by the elevator on the person.

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The atom that has been shown is an atom of carbon(C).

We know that in an atom is the smallest particle of a substance that can be able to take part in a chemical reaction. In this case, we have a an atom that have been shown. As expected, the protons that are in the atom have been shown as the circle that is in the innermost part of the image.

The electrons are found around the shells of the atom. The electrons that are in the shells of the atom must be equal to the number of protons that are in the atom of the element.

Given that the number of electrons must be equal to the number of protons and the number of protons gives us the identity of the element that have been shown in the image, we can conclude that this is an atom of carbon.

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The weight of the space probe of mass 1000 kg is 24790 N.

Weight is the product of mass and gravitational acceleration

To calculate the weight of the Jupiter, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The weight of the space probe is 24790 N.

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Answer:

Explanation:

Given:

F =20 N

D = 60 m

________

W - ?

W = F·D = 20·60 = 1 200 J

The angle that the rod makes with the horizontal is 9⁰.

The vertical direction of the left spring is determined  by applying the principle of equilibrium force as shown below.

The given parameters;

Apply the principle of equilibrium of force in vertical direction for left spring;

K_L(X_L) = 0.5(W)

65(X_L) = 0.5(11.76)

X_L = 5.88/65

X_L = 0.09 m

Apply the principle of equilibrium of force in vertical direction for right spring;

K_r(X_r) = 0.5(W)

30(X_r) = 0.5(11.76)

X_r = 5.88/30

X_r = 0.196 m

The angle made with the horizontal is calculated as;

θ = arc tan(X_r - X_L) / L

θ = arc tan[(0.196 - 0.09) / 0.67]

θ = arc tan(0.158)

θ = 8.99⁰

θ ≈ 9⁰

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The drawing of free body diagram is attached in answer.

The frictional force the field acts on the ball is 1 newton.

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).

Given parameters:

Mass of the ball: m = 2 kg.

Acceleration of the ball during slow down: a =   -0.5 m/s².

We have to find:  the frictional force the field acts on the ball: f =?

In this case,   the frictional force the field acts on the ball: f = mass × acceleration = 2 kg × 0.5 m/s² = 1 newton.

Hence, the frictional force the field acts on the ball is 1 newton.

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Answer:

Explanation:

T = 25 s

25 = 2*pi*sqrt(L/9.8)

L = 155.14 m

Answer:21

Explanation:

it is trust

Answer: B im sorry if its wrong

Explanation:

Explanation:

0.98

The coefficient of static friction is calculated by dividing the force required to set the chair in motion (112 N) by the weight of the chair (12 kg). This gives us 112/12 = 9.3. The coefficient of static friction is equal to the ratio of the force required to set the chair in motion to the weight of the chair, so 9.3/9.8 = 0.98.

The correct statement about dwarf planet locations is :

Ceres is found in the asteroid belt and Eris, Makemake, Haumea, and Pluto are found in the Kuiper Belt.

A dwarf planet is described as a small planetary-mass object that is in direct orbit of the Sun, smaller than any of the eight classical planets but still a world in its own.

There are as of now five formally grouped dwarf planets in our solar system and they include:

Ceres, Pluto, Haumea, Makemake and Eris.

Ceres location is that it is situated inside the asteroid belt between the orbits of Mars and Jupiter, while the other smaller person planets are situated in the external nearby planetary group in, or close to, the Kuiper belt.

Another six articles are in all likelihood predominate planets, yet are sitting tight for official grouping, and there might be upwards of 10,000 diminutive person planets in the solar system.

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Complete question:

Which statement about dwarf planet locations is correct?

Eris is found in the Kuiper Belt and Makemake, Haumea, Ceres, and Pluto are found in the asteroid belt.

Ceres is found in the asteroid belt and Eris, Makemake, Haumea, and Pluto are found in the Kuiper Belt.

Ceres and Pluto are found in the Kuiper Belt and Makemake, Eris, and Haumea are found in the asteroid belt.

Haumea and Makemake are found in the asteroid belt and Pluto, Ceres, and Eris are found in the Kuiper Belt.

During the third atmosphere on Earth, the same effect on Earth as it did on Mars. Heat energy was retained while water vapor was condensed.

The third atmosphere on the planet was created by volcanic outgassing and comet ice. This atmosphere had no oxygen, but plenty of carbon dioxide, water vapor, nitrogen gas, and methane gas.

When Earth's crust started to cool 2.5 billion years ago, there was less water vapor in the atmosphere, and more water condensed as liquid, resulting in the formation of Earth's third atmosphere.

This atmosphere was produced by volcanic outgassing, and it was the first to survive on Earth. A planet's atmosphere did not form through accretion while the formation of the planet's star.

Instead, its atmosphere forms as a result of internal volcanic activity or the aggregation of material from comet impacts.

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The separation distance in B is two times greater than in A, the force of attraction is greater than A.

Force of attraction is described as a force that pulls the body near due to its attraction. Some of these force of attraction include:

The force of attraction is given by the formula:

Fg = G* m1m2/r2

where

Fg is the force of attraction,

G is the gravitational constant with the value of 6.67 ×10−11 Nm2/kg2,

m1 is the mass of a body,

m2 is the mass of other body.

r is the distance between the two bodies.

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