Question 16 During a rocket launch, the action force is considered the force of explosion from the burning fuel and expanding gases. Which of the following would be considered the reaction force? ​

The rate at which temperature increases with depth in the Earth's crust is called the geothermal gradient, and it typically ranges from 25 to 30 degrees Celsius per kilometer.

Temperature is a measure of how hot or cold something is represented in terms of one of several scales, including Fahrenheit and Celsius. Temperature shows the direction in which heat energy will naturally flow—that is, from a hotter (higher) body to a colder body (one at a lower temperature). Temperature is defined as a measurement of an object's thermal energy. According to the International System of Units, the SI unit of temperature is Kelvin.

Here,

The rate at which temperature increases with depth in the Earth's crust is called the geothermal gradient, and it typically ranges from 25 to 30 degrees Celsius per kilometer in the upper crust, although this rate can vary depending on several factors, such as the location and the geological conditions. The geothermal gradient is an important factor that affects various geological processes, including volcanic activity, the formation of mineral deposits, and the generation of geothermal energy.

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The intensity (I) of the electromagnetic wave is approximately 2.68 x 10⁻³ W/m².

To find the intensity (I) of an electromagnetic wave with a peak electric field strength (E) of 154 V/m, you can use the following formula:

I = (1/2) * ε₀ * c * E²

where ε₀ is the permittivity of free space (8.854 x 10⁻¹² F/m) and c is the speed of light in a vacuum (3 x 10⁸ m/s).

Plugging in the values:

I = (1/2) * (8.854 x 10⁻¹² F/m) * (3 x 10⁸ m/s) * (154 V/m)²

After calculation, the intensity (I) of the electromagnetic wave is approximately 2.68 x 10⁻³ W/m².

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a) Work needed to stretch the spring from 12 m to 14 m is 8 J. b) Force of 64 N will keep the spring stretched by 16 m beyond its natural length.

When spring is stretched or compressed, such that length changes by an amount x from its equilibrium length, then it exerts force F = -kx in a direction towards its equilibrium position.

(a) Potential energy, U = (1/2)kx^2

k is spring constant, and x is displacement from natural length of spring.

W = U = (1/2)k(9-6)^2 = (1/2)k(3)^2 = (9/2)k

Therefore, k = (2/9)W = (2/9)(18 J) = 4 J/m.

W = (1/2)k(14-12)^2 = (1/2)(4 J/m)(2 m)^2 = 8 J

So the work needed to stretch the spring from 12 m to 14 m is 8 J.

(b)F = kx

F is force, k is spring constant, and x is displacement from the natural length of spring.

x = F/k = 64 N / 4 J/m = 16 m

Therefore, a force of 64 N will keep the spring stretched by 16 m beyond its natural length.

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Answer:

The highest state of matter in energy is gas. The lowest is solid.

Explanation:

The reason why is because gas is the highest conductor of electricity (which is why we have lightning). However, solids don't conduct electricity very well.

Answer:

3.5 N/cm²

Explanation:

Weight = 70 x 10 =700 N  

Pressure = weight/area=700/200=3.5 N/cm²

The centre of mass of the 20 shape bounded by the lines: a) The massis 8.775 kg. The moment is 3.947 kg·m. The x-coordinate is 0.993 m. b) The mass is 59.217 kg. The moment is 31.749 kg·m. The x-coordinate is 0.993 m.

a) To find the mass of the 2D plate, we need to calculate its area first. The shape bounded by the lines y = 1.3x and x = 0 to 1.9 forms a right triangle.

The base of the triangle is 1.9 units, and the height is given by y = 1.3x. Integrating y with respect to x over the given range, we find the area of the triangle to be 2.775 units².

Multiplying the area by the uniform density of 2.7 kg/m², we obtain the mass of the 2D plate as 8.775 kg.

To calculate the moment of the 2D plate about the y-axis, we need to integrate x times the density over the area of the plate.

Integrating x * (1.3x) with respect to x over the given range, we find the moment to be 3.947 kg·m.

The x-coordinate of the centre of mass of the 2D plate can be determined using the formula for the centre of mass of a two-dimensional system: x = moment / mass. Substituting the values, we find the x-coordinate to be 0.993 m.

b) To find the mass of the 3D body, we need to calculate its volume first. By rotating the lines y = 1.3x and x = 0 to 1.9 about the x-axis, we obtain a solid with a known volume. Using the formula for the volume of a solid of revolution,

we can calculate the volume of this solid as 18.869 m³. Multiplying the volume by the uniform density of 3.1 kg/m³, we obtain the mass of the 3D body as 59.217 kg.

To calculate the moment of the 3D body about the y-axis, we need to integrate x² times the density over the volume of the body.

Integrating x² * (1.3x)² with respect to x over the given range,

we find the moment to be 31.749 kg·m.

The x-coordinate of the centre of mass of the 3D body can be determined using the formula for the centre of mass of a three-dimensional system: x = moment / mass. Substituting the values, we find the x-coordinate to be 0.993 m.

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Answer: Use Roman Numerals in answering. 11. - 27310189. ... Hiwalay! Hatol. Unang puntos, Bughaw! 12. Hinto! Pula, pangalawang laglag. Panalo ...

Explanation:. Hinto! Hiwalay! Bughaw, 1 puntos. Unang paglabag! 14. Hinto! Bughaw, pangalawang paglabag

A beam of blue light causes photoelectrons to be emitted from a photoemissive surface. An increase in the intensity of the blue light will cause an increase in the number of photoelectrons emitted. Therefore, an increase in the intensity of blue light will cause an increase in the light intensity.

What is light? Light is a type of electromagnetic radiation that travels in waves at a velocity of 299,792 kilometers per second (km/s) in a vacuum. It is a form of energy and, like all forms of energy, can be transferred. Light, like other electromagnetic waves, has both electric and magnetic fields that oscillate perpendicularly to one another at right angles.Light has a very important property, which is its intensity. The amount of light that passes through a given area or space per unit time is known as light intensity. It is the amount of light energy that falls on a unit area in a given time. The energy of light, like all energy, can be described in terms of photons.

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Answer:

Mass of the ball, M = 6.667 kg

Explanation:

Given data:

Momentum, Mo = 10.0 kgm/s

Velocity of the rolling ball, V = 1.5 m/s

Mass of the body, M = ?

Momentum, Mo = Mass, M x Velocity, V

10.0 kgm/s = M x 1.5 m/s

Divide each side by 1.5 m/s

M = 10.0 kgm/s / 1.5 m/s

M = (6⅔) kg

:. Mass of the ball, M = 6.667 kg

The resulting equation of motion for the system is given by m × x''(t) + k × x(t) = f(t), which is 2 × x''(t) + 18 * x(t) = 2 * sin(2t).

What is  equation of motion?

The equations of motion are a set of mathematical relationships that describe the motion of objects under the influence of forces. There are different sets of equations of motion, depending on the specific scenario and the type of motion being considered (linear motion, projectile motion, circular motion, etc.). The equations of motion for linear motion, also known as the equations of uniformly accelerated motion.

To find the equation of motion for the system, we start with Newton's second law of motion, which states that the sum of forces acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, the object is the 2-kg mass attached to the spring.

The force exerted by the spring is proportional to the displacement of the mass from its equilibrium position, and it can be expressed as F_spring = -k× x(t), where k is the spring constant and x(t) is the displacement of the mass at time t.

In addition to the force exerted by the spring, there is an external force f(t) = 2 ×sin(2t) acting on the mass.

Applying Newton's second law, we have the equation of motion: m ×x''(t) + k ×x(t) = f(t).

Substituting the given values, m = 2 kg and k = 18 N/m, we obtain 2 ×x''(t) + 18 × x(t) = 2 ×sin(2t).

Therefore, the resulting equation of motion for the system is 2 × x''(t) + 18 × x(t) = 2 × sin(2t).

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Answer:

The formula is W=mg.

1.) W=40×10=400.

2.)W=40×5=200.

3.)W=40×150=6000.

none of them

Explanation:

the horizontal speed doesn't matter and if i got it right both of them started from the same height and both of them fell to the water (none of the jumped *higher only farther) and that's the only thing that matters. so they'll both end up there at the same time cause only gravity is affecting their movement process among the way.

Answer:

must double the force, with the same masses you get twice the acceleration.

Explanation:

Newton's second law establishes a relationship between force and acceleration where the constant of proportionality is mass

        F = m a

To prove these relationships you must double the force, with the same masses you get twice the acceleration.

     2F = m 2a

The downside is that if you double the mass, the acceleration stays the same.

    2F = 2m   a

Answer:

16.875 m [East]

Explanation:

In a velocity time displacement problems

displacement is given by

displacement of moving body = velocity of the that body  * time

displacement will be in the direction of velocity of body.

Given

velocity = 7.5 m/s [East]

time = 2.25 seconds

displacement = 7.5 m/s [East] *2.25 seconds

displacement = 16.875 m [East]

Thus, displacement of jack is 16.875 m [East].

Answer:

  (b)  an issue of sports illustrated magazine

Explanation:

You want to identify an example of printed material.

The term "printed material" generally refers to text and/or graphics represented in ink on paper. Modern "ink" may be a plastic or carbon material that is fused to the paper by heat.

An issue of Sports Illustrated magazine, choice B, will be an example of printed material.

Modern communication is often electronic, rendered on a view screen or as audio. Instances of this sort of communication are voicemail, a recording, and a text message.

Among the options given the Sports Illustrated Magazine is an example of printed material. The other options are not considered printed because they are in digital or audio formats.

Among the options provided, the Sports Illustrated Magazine is an example of a printed material. Printed materials are those that are typically put into a physical form using any form of printing method, like magazines, books, brochures, and posters. A voicemail, a recording of a speech, and a text message to a friend are not printed materials because they are digital or audio formats, not physical ones.

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Conduction is a way for heated temperatures to lose heat. The body can rapidly lose heat when swimming or sitting in cool or cold water, which increases the risk of hypothermia. Thus, option C is correct.

Because they are poor conductors, insulating materials limit heat loss through conduction. Additionally, the material stops air from moving about inside the chamber, hence minimizing convectional heat loss. Installing loft insulation will help to prevent heat loss via the roof.

Therefore, Insulators should be placed between the patient and good conductors to reduce conduction heat loss. Conduction, no gaps that will allow the heat to escape.

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Answer:

Cabinets are made to open one at a time so that there's not much of space taken up when all the drawers are open. Hope this helps.

Answer:

b.  1 m

Explanation:

the distance from one crest to the next  is 1λ

So, the distance from one crest to the next  1 m

λ = 1 m

Galileo used an inclined plane to slow down the falling motion because it allowed him to measure the acceleration due to gravity with greater accuracy and precision.

By using a sloping surface instead of a vertical drop, Galileo was able to reduce the speed of the falling object, which made it easier to measure the time it took for the object to move a given distance. This in turn allowed him to calculate the acceleration due to gravity more accurately than if he had dropped the object directly from a height.

In addition, by adjusting the angle of the inclined plane, Galileo was able to change the acceleration due to gravity and observe its effect on the motion of the falling object. This allowed him to investigate the relationship between the angle of the slope, the acceleration due to gravity, and the object's motion.

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Answer:

a. Increases

b. Two objects that have opposite charges

Explanation:

a. As the amount of charge on two objects increases, the strength of the electrical force between the objects increases. decreases. varies. remains the same.

According to Coulomb's law, the electrical force, F between two charges q and Q is directly proportional to the product of the charges.

So, F ∝ qQ

So, if q and Q increase, their product increases and thus, the strength of the electrical force between them increases.

So, if the amount of charge of two objects increases, the strength of the electrical force between the objects increases.

b. For which pair of objects would adding the same amount of electrons to each object result in a decrease in the electric force? two positively charged objects two negatively charged objects two objects that have no charge two objects that have opposite charges

Since according to Coulomb's law, the electrical force, F between two charges q and Q is directly proportional to the product of the charges.

So, F ∝ qQ

If the same amount of electrons are added to both charges and the charges are opposite in sign, the magnitude of one charge  increases while that of the other charge decreases. so the product qQ decreases and thus F decreases.

So, the electric force decreases when the same amount of electrons is added to two objects that have opposite charges.

Answer:

A increases

Explanation:

For a repulsive force, the magnitude of charges is either 1 μC or 6 μC, and for an attractive force, the magnitude of charges is either 1 μC or 6 μC.

The sum of two point charges is +7μC and they are 2.1 cm apart, each experiences a force of 188 N. We are required to find the magnitude of the charges given that the force is: repulsive and attractive.

When two charges have same signs, they repel each other. When two charges have different signs, they attract each other.

Coulomb's law states that the magnitude of the electrostatic force between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them.The formula for Coulomb's law can be written as:

F = (1/4πε₀) * [(q1q2)/r²]

Where,

F is the electrostatic force.

q₁ and q₂ are the magnitudes of two point charges.

r is the distance between the charges.

ε₀ is the permittivity of free space, a constant equal to 8.85 x 10⁻¹² C²/N m².

Let the magnitudes of two point charges be q₁ and q₂, respectively. As the charges are of the same magnitude but opposite in nature, let the magnitudes of the charges be q and q-7 respectively.

For the repulsive force:

188 = (1/4πε₀) * [(q x (q-7))/(0.021)²]

For the attractive force:

188 = (1/4πε₀) * [(q x (q-7))/(0.021)²]

On solving the above equations, we get the magnitudes of charges as:

Repulsive force: 6 μC, 1 μC.

Attractive force: 1 μC, 6 μC.

Therefore, the required magnitudes of charges in increasing order are:

For repulsive force: 1 μC, 6 μC.

For attractive force: 1 μC, 6 μC.

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Answer:

Explanation:B

In a roller coaster, kinetic energy is highest at the bottom and lowest at the top. On a roller coaster, the potential energy of gravity is greatest just at top and lowest at the bottom.

The roller coaster's potential energy is transformed into kinetic energy when it decelerates from the hill's crest. A rollercoaster ride slows as it climbs a new hill.

A moving object's power is known as kinetic energy. All moving objects contain kinetic energy, which is dependent on an organism's mass and speed. Mechanical, acoustic, or thermal kinetic energy are the three types that make up a rollercoaster ride. The energy of a thing is its energy.

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Answer:

20kg

Explanation:

ΣF = ma

500N = 25m

m = 20kg

The planet in our solar system with the highest sustained wind speed is Neptune.

Neptune, the eighth and farthest known planet from the Sun, is known for its extremely strong winds. The sustained wind speeds on Neptune can reach up to approximately 2,100 kilometers per hour (1,300 miles per hour). These high wind speeds make Neptune's atmosphere one of the most dynamic and turbulent in the solar system. The strong winds on Neptune are believed to be a result of its rapid rotation, its frigid temperatures, and the presence of various atmospheric features, including its famous dark storms and the Great Dark Spot observed by the Voyager 2 spacecraft in 1989. Studying the atmospheric dynamics and wind patterns of Neptune provides valuable insights into the behavior of planetary atmospheres and atmospheric processes in extreme conditions.

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Answer:

For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.

Answer:

Due to Newton's third law, the normal forces will be equal in magnitude and in opposite direction. The normal force always makes a 90 degree angle with the surface (perpendicular).

Explanation: