Question 13 A wheel rotates through an angle 200 rad in 4.50 s , at which time its angular velocity reaches 102 rad/s. Constants Part A Calculate the angular velocity at the start of this 200 rad rota

Answer:

Fuel cells are used in the space shuttle as one component of the electrical power system. ... The fuel cell power plants generate heat and water as by-products of electrical power generation. The excess heat is directed to fuel cell heat exchangers, where the excess heat is rejected to Freon coolant loops

Explanation:

a.)

Reactants : CO2 (carbondioxide) + H2O (water)

Products : O2 (oxygen) + C6H12O6 (glucose)

b.)

Reactants: Na ( Solid Hydrogen) + H2O (water)

Products: H2 (hydrogen gas) + NaOH (sodium hydroxide)

The work done by polytropic process is -69.88 kJ.

The work for the polytropic process is determined using  

P . v^n = constant.

where P is pressure, V is specific volume

As we know that

W = m∫Pdv

W = m(P2v2 - P1v1) / (1 - n)

In order to evaluate this expression, we need to determine the specific volumes and the polytropic exponent, n.

State 1: v1 = vg1 = 0.0993 m3/kg

State 2: at 12 bar, 80oC; v2 = 0.02051 m3/kg

Hence by using polytropic exponent

P1 / P2 = (v2 / v1)^n

n = ln(2/12) / ln(0.02051/0.0993)

n = 1.136

Find the work done

W = m(P2v2 - P1v1) / (1 - n)

W = 2kg(12bar . 0.02051m³/kg - 2 . 0.0993) / (1 - 1.136) x (10⁵ N/m²/1 bar) x (1 kJ / 10³ Nm)

W = -69.88 kJ

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The given scenario is an example of Newton's 3rd Law which states that for every action, there is an equal and opposite reaction.

In this case, the action is the force applied by the cannonball on the cannon, and the reaction is the force applied by the cannon on the cannonball. As the cannonball shoots out of the cannon, it applies a force in the forward direction, and, as a reaction, the cannon applies an equal force in the backward direction, causing it to move backward. This happens because the forces are acting on two different objects. The cannonball and the cannon are two different objects, and so the forces they exert on each other are equal and opposite. Therefore, we can conclude that the scenario mentioned in the question is an example of Newton's 3rd Law.

Newton's third law is officially expressed as follows: There is an equal and opposite reaction to every action. The implication of the statement is that there are always two forces acting on the two interacting objects. The force acting on the first object is equal in size to the force acting on the second.

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The property under consideration determines whether a wave characteristic is geometric or time-based.

Here are some common wave characteristics and their classifications:

- Wavelength: geometric-based

- Amplitude: geometric-based

- Frequency: time-based

- Period: time-based

- Speed: geometric-based (since it is a function of wavelength and frequency)

Note that the classification of a wave characteristic as geometric-based or time-based depends on the property being considered. For example, wavelength and amplitude are related to the shape and geometry of the wave, while frequency and period are related to the time it takes for the wave to repeat. Speed, on the other hand, is a combination of both geometric and time-based properties.

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Answer:

Explanation:

1)Melting:

Melting is the process by which a substance changes from the solid phase to the liquid phase. ... Melting occurs when the internal energy of a solid increases, usually through the application of heat or pressure, such that the molecules become less ordered.

2) liquefication:

In physics and chemistry, the phase transitions from solid and gas to liquid (melting and condensation, respectively) may be referred to as liquefaction. The melting point (sometimes called liquefaction point) is the temperature and pressure at which a solid becomes a liquid.

3) vaporization:

Vaporization, conversion of a substance from the liquid or solid phase into the gaseous (vapour) phase. If conditions allow the formation of vapour bubbles within a liquid, the vaporization process is called boiling. Direct conversion from solid to vapour is called sublimation.

4) Sublimation occurs as molecules of a substance in the solid state go to the vapor state directly, rather than through the liquid state. ... ⭕In terms of the kinetic molecular theory, we know that molecules are in constant random motion, even when the substance is below the melting point.

The DOH issues advisories from June to November due to increased health risks associated with the rainy season, disease outbreaks, and the need for preparedness and public education.

The Department of Health (DOH) issues public health advisories during the months of June to November for several reasons related to public health concerns specific to that time period. Here are some possible reasons:

1. Rainy Season: In many regions, June to November corresponds to the rainy season or monsoon season. During this time, there is an increase in rainfall, which can lead to various health risks such as waterborne diseases, flooding, and increased vector population (mosquitoes, rats, etc.). The DOH issues advisories to raise awareness and provide preventive measures against these risks.

2. Disease Outbreaks: Certain diseases are more prevalent or have a higher likelihood of outbreaks during specific months. For example, dengue fever is commonly associated with the rainy season due to the increased breeding of mosquitoes in stagnant water. Leptospirosis, which is transmitted through contaminated water, is also more common during this period. The DOH issues advisories to inform the public about these diseases and how to prevent them.

3. Preparedness and Response: The DOH aims to promote preparedness and timely response to public health emergencies. By issuing advisories in advance, they can inform the public about potential health risks, preventive measures, and necessary actions to take. This helps individuals and communities be better prepared and able to respond effectively to health threats.

4. Awareness and Education: Public health advisories serve as a means to educate and raise awareness about health-related issues. The DOH uses these opportunities to disseminate information on proper hygiene practices, sanitation, vaccination, and other preventive measures. By targeting specific months, they can address the specific health concerns associated with that time of the year.

It's important to note that the specific reasons for issuing advisories during these months may vary depending on the region and prevailing health risks. The DOH assesses local epidemiological data and collaborates with other agencies to determine the appropriate timing and content of the advisories.

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Answer:

T (Period) = 2 π (L / g)^1/2         for a simple pendulum

L = g * T^2 / (4 π^2)

L = 9.98 m/s^2 * 9 s^2 / 39.5 = 2.27 m

Answer:

The horizontal distance is 136.6 m.

Explanation:

Given that,

Initial speed = 38 m/s

Angle = 34°

Suppose, Calculate the horizontal distance \(x_{max}\) in meters the ball has traveled when it returns to ground level.

We need to calculate the horizontal distance

Using formula of range

\(R=\dfrac{v_{0}^2\sin(2\theta)}{g}\)

Where, v= speed

g = acceleration due to gravity

Put the value into the formula

\(R=\dfrac{(38)^2\sin(2\times34)}{9.8}\)

\(R=136.6\ m\)

Hence, The horizontal distance is 136.6 m.

The total energy of the body at evevry point is remained same due to the law of conservation of energy. Distance from A to B and final velocity of the ball just reach before C is 44.3 m/s.

d (distance) from A to B is = √2gh

In this case given are, g = 9.8 m/s² and h = 100m,

so here d = √(2⋅9.8⋅100) = 44.3m.

Final velocity ,v = √2gh

Here given are , v is the velocity, g is the acceleration due to gravity, and h is the height. In this case,

g = 9.8 m/s² ,h = 100m,

v = √(2⋅9.8⋅100)

= 44.3 m/s (final velocity)

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When the object is placed between the focal point and a convex lens, the image it produces contains these characteristics:

A convex lens (converging lens) is a type of lens that is thicker at the center and thinner at the edges. It bends light from distant objects inward toward a point (focal point). A convex lens is generally used to correct farsightedness.

There's three rules for the ray path passing through convex lens

When those rules is applied to know how the image is produced when an object is placed between the focal point and the lens, you'd find out that the image produced is virtual (located on the same side as the object), upright, and magnified.

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The event horizon is the hypothetical edge of a black hole where the escape velocity is the speed of light.

The event horizon is the boundary around a black hole beyond which nothing, not even light, can escape. It is the point of no return, where the gravitational pull of the black hole becomes so strong that the escape velocity required to overcome it exceeds the speed of light.

Any object or radiation that crosses the event horizon is effectively trapped within the black hole's gravitational field and cannot escape. The event horizon is considered the boundary between the region of space just outside the black hole and the region inside the black hole, where the singularity is located at the center.

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If you are at zero degrees latitude and zero degrees longitude, you are in the Atlantic Ocean.

This location is often referred to as the "Prime Meridian" and is the line of longitude that separates the Eastern Hemisphere from the Western Hemisphere. It is also the starting point for measuring longitude, with longitudes to the east and west being measured in degrees relative to this line. The Prime Meridian intersects the Equator at zero degrees latitude, which is the line of latitude that circles the Earth at 0 degrees North and South and separates the Northern Hemisphere from the Southern Hemisphere.

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Answer:

5km 1 hour

Explanation:

Answer:

Answer: 2.70m/s NE

Explanation:

Just did it.

Answer:

program explanation

Explanation:

program explanation

The set of activities having a long-term aim should be a program.

A program refers to a set of instructions that a computer follows in order to perform a specific task. At the time When you program a computer, you provide it a set of instructions to make it able to perform a particular task.

So here the program should be considered.

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Answer:Condensation

Explanation:

Answer:

Condensation

Explanation:

Condensation is the process by which water vapor in the air is changed into liquid water.

"Water vapor"

"Becomes"

"Liquid water"

The water vapor converted into liquid water, which is the process of condensation.

Hope it helped!

Have a supercalifragilisticexpialidocious day!

Answer:

10

Explanation:

Amu denotes for unified atomic mass.

it is mostly used to define the atom's mass and molecules.

we know that

One unit of amu is 1 ÷ 12 of the mass of a nuclide 12C

And 1 u = 1.660 538 921 × 10-27 kg

In the inside we can found that there is 10 nucleons so here the alss of the atoms would be 10 amu  

Answer:

guy above me is right

Explanation:

Answer:

The magnitude of the emf induced in the loop is 2.4 × 10⁻⁵ V

Explanation:

The magnitude of the induced emf of a loop moving relative to a wire is given as follows;

The given parameters are;

I = 50 A, a = 50 cm, and b = 6.0 cm

The constant rate of change of x, v = 20 cm/s

Motional emf formula

The magnetic field due to the straight wire, B = μ₀·i/(2·π·x)

The flux given by the rectangular loop, Ф = BA =  μ₀·i/(2·π·x) × a × b

Therefore, we get;

\(e = \dfrac{-d\phi}{dt} = \dfrac{-\mu_0 \cdot i \cdot a\cdot b}{2 \cdot \pi} \times \dfrac{d}{dt} \left (\dfrac{1}{x} \right ) = \dfrac{-\mu_0 \cdot i \cdot a\cdot b}{2 \cdot \pi} \times \left (\dfrac{1}{x^2} \right ) \dfrac{dx}{dt}\)

\(\because \dfrac{dx}{dt} = v\)

Therefore;

\(e = \dfrac{-\mu_0 \cdot i \cdot a\cdot b}{2 \cdot \pi} \times \left (\dfrac{1}{x^2} \right ) \dfrac{dx}{dt} = \dfrac{-\mu_0 \cdot i \cdot a\cdot b}{2 \cdot \pi} \times \left (\dfrac{1}{x^2} \right ) \times v \left(\because \dfrac{dx}{dt} = v \right)\)

μ₀ = 4·π × 10⁻⁷ H/m

We get;

\(e = \dfrac{4\cdot \pi \times 10^{-7} \, H/m\times50 \, A \times 0.5 \, m\times 0.06 \, m}{2 \cdot \pi} \times \left (\dfrac{1}{(0.05 \, m)^2} \right ) \times 0.2 \ m/s = 2.4 \times 10^{-5} \, V\)

The induced emf, e = 2.4 × 10⁻⁵ V

Food science and technology generally consists of the production, preservation and consumption of food.

Physics, as a scientific subject, helps to explain and understand the underlying physical and chemical processes that occur during the aforementioned processes. Without physics, we as food scientists/engineers wouldn't understand concepts such as heat transfer, rheology (study of food deformation), thermodynamics, transport phenomena and food spectroscopy.

In summary, physics plays an important role in food science and technology by helping to understand and control the physical and chemical processes that occur during food production, preservation, and consumption, which allows food scientists to make better quality and safe food products.

Answer:

c ok      

Explanation: right?

Answer:

16

Explanation:

Answer:On a bicycle trail, the city is painting arrows like the one shown below:

Explanation:Upper pointing arrow with height of 11 and length of 9. Rectangular base of arrow has length of 7 and height of 8. All units are in centimeters.

Given:

The area of the plate is: A = 0.188 m²

The field produced between the plates is: E = 37000 N/C

To find:

The charge to be placed on the plates.

Explanation:

The electric field produced between two parallel plates is given as:

Here, Q is the charge on the parallel plates and ε₀ is the permittivity of free space having a value of 8.85 × 10⁻¹² C²/N.m²

Rearranging the above equation, we get:

Substituting the values in the above equation, we get:

Final answer:

The amount of charge to be placed on parallel plates is 6.156 × 10⁻⁸ C.

Answer:

the limbic system has its input and processing side (the limbic cortex, amygdala and hippocampus) and an output side (the septal nuclei and hypothalamus).

Explanation:

hope it helps

Answer:

limbic system

Explanation:

The "limbic system" is situated under the cerebrum. It is responsible for the person's emotions and memories. Its primary structures include: hippocampus, amygdala, thalamus and hypothalamus.

The "hippocampus" is responsible for obtaining new memories. It is also associated with mental functions like "learning."

The "amygdala" is responsible for emotional memories.

The "thalamus" and "hypothalamus" are responsible for reactions towards the emotions.

Explanation:

Potential energy is the energy occupied by an object or substance due to its position.

For example, a sled drops 20 meters in height on a hill shows that a decrease in height is taking place.

Hence, potential energy is involved there.

Kinetic energy is the energy acquired by an object due to its motion.

For example, a rider is going 20 m/s at the bottom of the hill shows that rider is in motion due to which it has kinetic energy.