An atom of 65as has a mass of 64.949563 amu. mass of1h atom = 1.007825 amu mass of a neutron = 1.008665 amu calculate the mass defect (deficit) in amu/atom

Answer:

D. the water's latent heat of vaporization is being pulled from the air.

Explanation:

A swamp cooler also generally referred to as the evaporative cooler is an electronic device that uses moisture to cool air. This simply means that, the electronic device works on the principle of evaporation of water to cool the surrounding air.

In swamp coolers, water absorbs large amount of warm air via the evaporative wet cooler pad, so as to evaporate and consequently cooling the air effectively and efficiently.

Swamp coolers are effective because the water's latent heat of vaporization is being pulled from the air.

The latent heat of vaporization can be defined as the energy that is being absorbed by water during evaporation.

The swamp coolers are typically made up of the following essential components, these are;

1. Float.

2. Blower.

3. Pump.

4. Evaporative pad.

5. Water supply valve.

Hence, through the principle of evaporative cooling (latent heat of vaporization), swamp coolers reduces or lower the air temperature in its surroundings.

Answer:

B and D

Explanation:

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B) energy. An important underlying feature of hydraulic devices is the conservation of energy.

This is achieved through the transfer of energy from one point to another using a pressurized fluid, usually oil or water. The fluid is used to transmit force, and the conservation of energy ensures that the force applied at one end of the system is transferred to the other end without any loss of energy. This makes hydraulic devices highly efficient and effective for a wide range of applications, from construction machinery to aerospace engineering. Liquid fluid power is used by hydraulic machines to do operations. Heavy-duty construction vehicles are a typical illustration. Hydraulic fluid is pumped to numerous hydraulic motors and hydraulic cylinders located all around the machine in this type of machine and is pressurised in accordance with the resistance present.

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Answer:

The si unit for weight is newton

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Answer:

This can spread their weight.

Explanation:

The ladder has a much larger surface area than the firefighter. Hence, his weight is spread out much more than usual, decreasing the pressure on the ice, preventing the ice from breaking/cracking.

Hope this helped!

Answer:

D

Explanation:

The answer is d dont worry about the comment sorry

The initial distance between the tanks is approximately 50.0 m and the distance between the tanks at the time of impact is approximately 1123.6 m.

It can be calculated using the formula below: Output minus input equals efficiency. The total amount of beneficial work finished, minus any loss and spoilage, is known as output (or work output).

Horizontal motion:

Since there is no acceleration in the horizontal direction, the horizontal velocity of the round remains constant throughout its flight. We can find the horizontal component of its velocity as follows:

\(vx = vx = v cosx = 250 cos(10) = 242.47 m/s\)

Vertical motion:

The round is fired at an angle of 10° above the horizontal. We can use the following kinematic equation to find the time it takes for the round to hit the same height from which it was launched:

\(y = vy t + 0.5at^2\)

At the highest point of the trajectory, the vertical velocity of the round is zero.

\(v0y = v0 sinx = 250 sin(10) = 43.45 m/s\)

We can use the following equation to find the time of flight:

\(t = (vfy - v0y) / a\)

where vf is the final vertical velocity (which is also equal to -v0y).

\(t = (0 - 43.45) / (-9.81) =4.43 s\)

(a) d1 = 50.0 m

x = v0x t

where x is the horizontal displacement, v0x is the initial horizontal velocity, and t is the time of flight.

\(x = 242.47 m/s * 4.43 s = 1073.6 m\)

Therefore, the distance between the tanks at the time of impact is:

(b) d2 = d1 + x = 50.0 m + 1073.6 m ≈ 1123.6 m

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If sunlight were green, then green would be the most comfortable color to wear on a hot day. This is option b.

We know that sunlight is white because our Sun is white. Some objects will reflect most of the colors in the sunlight, which would make them appear white or pale. Some will absorb most of the colors and this would make them appear black or dark. On a hot day, white clothes reflect sunlight the most so they will be more comfortable to wear.

A red rose, for instance, is red because it reflects red color and absorbs the remaining colors.

Imagine that sunlight were green instead of white. A green object would reflect most colors while a red (the opposite color of green) object would instead absorb most colors in the sunlight. Therefore, the most comfortable color to wear on a hot day would be green if sunlight were green.

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Answer:

True

Explanation:

Generally speaking, we say that light travels in waves, and all electromagnetic radiation travels at the same speed which is about 3.0 * 108 meters per second through a vacuum.

Answer:

absolutely true

Explanation:

as it travels in a speed of 30×108 m per second

The electric field strength at a distance of 1.20 m on the x-axis is -1.5 × 10⁴ N/C.

To find the electric field strength at a distance 1.20 m on the x-axis, we can use Coulomb's law:

\($$F=k\frac{q_1q_2}{r^2}$$\)

where F is the force between two charges, q1 and q2 are the magnitudes of the charges, r is the distance between the charges, and k is the Coulomb constant.For a single point charge q located at the origin of the x-axis, the electric field E at a distance r is given by:

\($$E=\frac{kq}{r^2}$$\)  where k is the Coulomb constant.

So, let's calculate the electric field due to each charge separately and then add them up:

For the +2.0 C charge at x = 0, the electric field at a distance of 1.20 m is:\($$E_1=\frac{kq_1}{r^2}=\frac{(9\times10^9)(2.0)}{(1.2)^2}N/C$$\)

For the -3.0 C charge at x = 0.40 m, the electric field at a distance of 1.20 m is:

\($$E_2=\frac{kq_2}{r^2}\)

\(=\frac{(9\times10^9)(-3.0)}{(1.20-0.40)^2}N/C$$\)

The negative sign indicates that the direction of the electric field is opposite to that of the positive charge at x = 0.

To find the net electric field, we add the two electric fields\(:$$E_{net}=E_1+E_2$$\)

Substituting the values of E1 and E2:

\($$E_{net}=\frac{(9\times10^9)(2.0)}{(1.2)^2}-\frac{(9\times10^9)(3.0)}{(0.8)^2}N/C$$E\)

net comes out to be -1.5×10⁴ N/C.

Therefore, the electric field strength at a distance of 1.20 m on the x-axis is -1.5 × 10⁴ N/C.

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Answer:

2.22m/s^2

Explanation:

Value analysis is a method used to evaluate the worth and effectiveness of an organization or project.

In the case of DEWA (Dubai Electricity & Water Authority), conducting a value analysis can provide insights into the overall value created by the organization. Here are some key points to consider in a value analysis of DEWA:

1. Service Quality: Evaluate the quality and reliability of the electricity and water services provided by DEWA. Assess factors such as uptime, response time, customer satisfaction, and the overall impact on the daily lives of residents and businesses in Dubai.

2. Cost Efficiency: Analyze the cost-effectiveness of DEWA's operations, including the generation, transmission, and distribution of electricity, as well as water production and distribution. Assess the efficiency of resource utilization, cost management practices, and the impact on consumer tariffs.

3. Sustainability: Evaluate DEWA's commitment to sustainable practices, such as renewable energy integration, water conservation efforts, and environmental stewardship. Assess the organization's contributions to reducing carbon emissions and promoting a greener future.

4. Innovation and Technology: Assess DEWA's adoption of innovative technologies, such as smart grids, advanced metering systems, and digital solutions. Evaluate the impact of these technologies on service delivery, efficiency, and customer experience.

5. Stakeholder Engagement: Analyze DEWA's relationships with stakeholders, including customers, suppliers, government entities, and the community. Assess the effectiveness of communication, collaboration, and the organization's contribution to social and economic development in Dubai.

By conducting a comprehensive value analysis of DEWA, stakeholders can gain a holistic understanding of the organization's performance, impact, and value proposition. This analysis can guide decision-making, identify areas for improvement, and support DEWA's ongoing efforts to provide reliable, sustainable, and affordable electricity and water services to the residents and businesses of Dubai.

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Answer:

I guess it's force hope this answer helps

Answer:

what scenario i dont understand

Explanation:

step by step explenation

According to given information, The 0.3 second difference in fall times results in a 9.5% difference in the estimates of the building's height.

The students attempted to estimate the height of a building by dropping a barometer off the roof and timing its fall. One student recorded a fall time of 3.0 seconds, while the other student recorded a fall time of 3.3 seconds. We need to calculate the percentage difference in their estimates of the building's height based on this time difference.

To find the percentage difference, we can use the formula:

Percentage Difference = (Difference / Average) x 100

First, let's calculate the difference in fall times:

Difference = 3.3 s - 3.0 s = 0.3 s

Next, we need to find the average of the two fall times:

Average = (3.3 s + 3.0 s) / 2 = 3.15 s

Now, let's substitute the values into the formula:

Percentage Difference = (0.3 s / 3.15 s) x 100

Simplifying the calculation:

Percentage Difference = 0.0952 x 100

Percentage Difference = 9.5%

So, the 0.3 second difference in fall times results in a 9.5% difference in the estimates of the building's height.

In conclusion, the 0.3 second difference in fall times results in a 9.5% difference in the estimates of the building's height.

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The half-life of the isotope is approximately 157.17 days. This means that it takes around 157.17 days for the quantity of the isotope to reduce to half of its original amount.

To determine the half-life of a radioactive isotope, we can use the formula:

Half-life = (Time * ln(2)) / ln(Ratio)

Given that the sample of the isotope contains only 6.25% of its original material after 58 days, we can calculate the half-life as follows:

Ratio = Final amount / Initial amount = 6.25% / 100% = 0.0625

Time = 58 days

Substituting these values into the formula, we have:

Half-life = (58 days * ln(2)) / ln(0.0625) ≈ 157.17 days

Therefore, the half-life of the isotope is approximately 157.17 days.

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The spring constant of the spring is 19.6 N/m.

The correct answer is option D.

The spring constant of the spring is calculated by applying the following equation as shown below.

Mathematically, the formula of Hooke's law is given as;

F = kx

where;

k = F / x

the extension of the spring when the 250 g mass was hung on it is calculated as;

x = 30 cm - 25 cm

x = 5 cm = 0.05 m

The spring constant of the spring is calculated as;

k = ( mg ) / x

where;

k = ( 0.1 x 9.8 ) / ( 0.05 )

k = 19.6 N/m

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Answer: 12

Explanation:

The resultant vector is  12 unit.

When two vectors point in the same direction, their sum is equal to the total of their respective magnitudes pointing in the same direction.

When two vectors are pointed in opposite directions, the resultant vector is pointed in the direction of the larger vector and is equal to the difference between their magnitudes.

Here, one vector of 15 unit is acting to the left and another vector of 3 unit acting rightwards. As they are acting in opposite direction, vector summation of two vector will be equal to the value of subs traction of their magnitude.

So, Resultant vector= 15 unit + (-3 unit)

= 15 unit - 3 unit

= 12 unit.

Hence, the resultant vector will be 12 unit.

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The LED's conversion efficiency is the ratio of the optical power produced to the electrical power input. In this case, the LED has a conversion efficiency of 2 mW / (2 V * 100 mA) = 0.02, or 2%.

This means that 2% of the electrical power applied to the LED is converted into optical power, while the rest is lost as heat. This conversion efficiency is a measure of how effectively the LED converts electrical energy into light. To improve the LED's efficiency, engineers may work to reduce the amount of electrical energy lost as heat, or to increase the amount of electrical energy that is converted into light.

The LED's conversion efficiency is the ratio of the optical power produced to the electrical power input. In this case, the LED has a conversion efficiency of 2 mW / (2 V * 100 mA) = 0.02, or 2%.

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Answer:

The electric field strength is dependent upon the quantity of charge on the source charge (Q) and the distance of separation (d) from the source charge.

The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases.  As the amplitude of the sound wave increases, the intensity of the sound increases. Sounds with higher intensities are perceived to be louder.

The calculated refractive index is 1.38≤n≤1.67.

Thus, through the refractive index n, the wavelength inside the medium and the wavelength in free space are connected.

n=λ/λ₀

The wavelength of red light in free space ranges from 620 nm to 750 nm. To human eyes, each of those wavelengths appears red. Refractive index is given by

n1 =620 nm/450 nm

=1.38

and n2=750 nm/450 nm

=1.67 in the equation above.

According to the details you provided, the refractive index might be any value between 1.38 and 1.67.

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Answer: 86.4J

Explanation: EPE = 1/2kx^2

x=0.12, k=12000

.5(.12^2)(12000) = 86.4J

Answer:

Baking a cake requires heat to be applied to the batter in order for it to cook and chemically change into cake. The energy or heat applied is absorbed by the ingredients, so this represents an endothermic reaction.

Explanation:

that's the sample answer, hope it helps

The batter needs to be heated in order to cook and chemically transform into a cake when it is baked. An endothermic reaction is taking place because the energy or heat applied is being absorbed by the constituents.

The quantitative characteristic that is transferred to a body or a physical system in physics is referred to as energy. It manifests itself as heat and light, as well as the act of doing work. Energy is a resource that is conserved; it can only be changed from one form to another and cannot be created or destroyed, according to the law of conservation of energy. The SI unit of energy measurement is the joule (J).

According to the question, there are various types of reactions two of which are endothermic reactions and exothermic reactions.

In an endothermic lot of energy is absorbed and in opposition to the exothermic reaction lot of energy is released.

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Answer:

\(4 ms^{-2}\)

Explanation:

Normal force - should be the reaction from the surface it's on - nullifies the weight of the object. At this point the only force is of \(22-14 = 8N\) from whoever is pushing the square and the friction, towards the right. At this point we divide the force by the mass of the object to obtain an acceleration of \(8/2 = 4 ms^{-2}\)

The melting point of a substance is the temperature at which the substance changes its phase from solid to liquid.

The freezing point is the temperature at which the substance changes its phase from liquid to solid.

The melting point of a substance is the same as the freezing point. That is when the temperature of the substance in the liquid form is increased continuously, the temperature at which the substance turns into a solid is equal to the temperature at which the substance will turn into liquid from solid if the temperature is decreased continuously, from a higher temperature.

Final velocity - Velocity displacement

       Δv            a

2)    -12 m/s        -3 m/s2

3)     5 m/s        2.5 m/s2

What is the final and initial velocity?

1. Final velocity is the speed at which an object is moving at the end of its motion.

2. Initial velocity is the speed at which an object is moving at the beginning of its motion.

3. Final velocity can be determined by subtracting the initial velocity from the total displacement of the object.

4. Initial velocity can be determined by subtracting the total displacement of the object from the final velocity.

2) 0-12 = -12/4 = -3

3) 8-3 = 5/2 = 2.5

4) 46.4-27.3 = 19.1/11 = 1.73

5) 5-15 = -10/5 = -2

Therefore, the above one is the answer for this chart.

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Answer:

can you give me abrainlest??