a 280 nm thin film with index of refraction 1.6 floats on waterwhat is the largest wavelength of reflected light for which constructive interference occur? answer in units of m.

Answer:

then it's a rock

Explanation:

An arrangement of atoms with synchronized magnetic fields is referred to as a "Magnetic Domain."

The magnetic field is the area in which a magnet produces its magnetic effects. We use the magnetic field as a tool to describe how the magnetic force is distributed in the vicinity and inside something magnetic in nature.

While opposite poles are drawn to one another, the same poles repel one another. When iron is rubbed against a magnet, the iron's atoms' north-seeking poles align in the same direction. The force generated by the aligned atoms creates a magnetic field.

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Answer:

2.066 atm

Explanation:

PV = nRT      increase T    volume and n and R remain constant

30 C = 303.15 K      40 C = 313.15

P  prop to T      new P   will be   313.15/303.15 * 2 atm = 2.066 atm

Answer:

the following image will make you understand

Explanation:

The air speed of the helicopter has the ground speed of 250 km/h is 233 km/h  

The ground speed of the helicopter = 250 km/h

The wind speed of the helicopter = 17 km/h

The air speed of the helicopter can be found using the formula,

            G = W + A
where G is the ground speed of the helicopter

           W is the wind speed of the helicopter

           A is the air speed of the helicopter

Let us rearrange the equation in order to get the airspeed,

          A = G - W

Let us substitute the known values in the above equation, we get

          A = 250 - 17

              = 233 km/h  

Therefore, the air speed of the air speed is 233 km/h

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Observation:
- Mr. Wilson was not wearing gloves while cooking, which is a violation of the company's safety procedures.
- The incident occurred because of the worker's inability to comply with the safety procedures.
- There is a need for stricter safety guidelines and enforcement of personal protective equipment usage in the workplace.
Methodology:
- The team also obtained copies of the safety procedures currently practiced by the kitchen staff for further analysis.
Findings:
- The root cause of the accident was the worker's failure to follow the company's safety procedures, specifically the requirement to wear gloves while cooking.
- The reasons for the accident include a lack of awareness about the importance of wearing gloves and a lack of enforcement of the safety procedures.
Conclusion:
- The incident could have been prevented if the worker had followed the company's safety procedures and worn gloves while cooking.
- There is a need for stricter safety guidelines and enforcement of personal protective equipment usage in the workplace to prevent similar incidents from occurring in the future.
Suggestion:
- The company should implement stricter safety guidelines and conduct regular training sessions for employees to reinforce the importance of following safety procedures.
- The company should also enforce the usage of personal protective equipment in the workplace and hold employees accountable for any violations.

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Answer:

709.5 cal

Explanation:

masa m de la barra de aluminio = 100 g

temperatura ambiente = 27 ° C

Asumiremos que la barra de aluminio está en equilibrio térmico con el ambiente.

Esto significa que la temperatura inicial de la barra es de 27 ° C

temperatura final a la que la barra debe calentarse = 60 ° C

el aumento de temperatura ΔT será

ΔT = 60 ° C - 27 ° C = 33 ° C

capacidad calorífica específica c del aluminio = 0.215 cal/g°C

Calor C requerido = mcΔT

C = 100 x 0.215 x 33 = 709.5 cal

Answer:

i think its 470

Explanation:

Answer:

Resistance is inversely proportional to current because R = V/I

Explanation:

From ohms law,  The relation between resistance and current is, resistance is inversely proportional to current.

Ohm's law describes the relation between applied voltage and current flow in the conductor. It was proposed by Sir Georg Simon Ohm. The current flows in the conductor are directly proportional to the potential difference between two points.

It remains constant at room temperature. V ∝ I.  V represents the applied voltage or potential difference between two points and its unit is volt(V). I represent the current flow in the conductor and its unit is ampere(A).

Generally, Ohm's law is written as V = IR. R represents resistance that opposes the current flow in the circuit. The unit of resistance is the ohm(Ω). Resistance is inversely proportional to the current flow.

The relation of Ohm's law is written as R = V / I.  At constant voltage,                 R ∝ 1 / I. When resistance increases, current flow decreases, and current flow increases with the decrease in resistance.  

Hence, Resistance is inversely proportional to the current from the ohms law relation, R = V / I.

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Answer: 300 m/s

Explanation:

So If it moves 200 metres in 20 seconds and then another 100 metres this is changing the total distance travelled to 300 metres. Also, it moves this distance extra distance in 10 seconds therefore the total time is 30 seconds.

speed = distance / time

speed = 300 / 30

speed = 10 m/s

After travelling a total of 300 metres and spending a total of 30 seconds in motion, the school bus travels at an average speed of 10 metres per second (m/s).

To figure out how fast the school bus was going on average, we need to know how far it went and how long it took to get there.

First, we add up the two lengths the school bus travelled: 200 metres plus 100 metres equals 300 metres.

Next, we add up how long it took to go both distances: 20 seconds plus 10 seconds equals 30 seconds.

Here's how to figure out the average speed:

Average Speed = Total Distance Travelled / Total Time Spent

Putting the numbers in:

Average Speed = 300 metres in 30 seconds

10 metres per second (m/s) is the average speed.

So, the school bus's usual speed is 10 m/s.

Average speed is the general rate of movement over a certain amount of time, no matter how it changes during the trip. In this case, the bus went 300 metres in 30 seconds, which means it went 10 m/s on average.

It's important to know that instantaneous speed is not the same as usual speed. Instantaneous speed is the speed of the bus at any given time during its trip. This speed could change as the bus speeds up, slows down, or stays at the same speed.

Calculating the average speed is helpful for figuring out how well something works generally, figuring out how efficient it is, and comparing different trips or types of transportation. But it might not take into account all the details of a given trip, such as different speeds or stops along the way. For a full picture of how the bus moves, it may be necessary to think about other things.

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F = ma

so, we can write it as;

= 5 = m × 20

= 5/20 = m

= 1/4 = m

= 0.25 kg = m

Given :

Thin hoop with a mass of 5.0 kg rotates about a perpendicular axis through its center.

A force F is exerted tangentially to the hoop. If the hoop’s radius is 2.0 m and it is rotating with an angular acceleration of 2.5 rad/s².

To Find :

The magnitude of F.

Solution :

Torque on hoop is given by :

\(\tau =F\times R\\\\I\alpha = FR\\\\MR^2\alpha = FR\\\\F = MR\alpha\)( Moment of Inertia of hoop is MR² )

Putting  value of M, R and α in above equation, we get :

\(F=5\times 2\times 2.5\ N\\\\F = 25 \ N\)

Therefore, the magnitude of force F is 25 N.

Hence, this is the required solution.

The distanve travelled is d=1200 miles

Time taken is t=420 miles.

The velocity is

The velocity is 2.85 miles/min

Answer:

The atmosphere has frozen out into the polar ice caps and permafrost as Mars has cooled.

Explanation: Good luck box BrokenTag27

A coordinate system is a system of coordinates used to locate positions on a plane or in Space. It is used to specify the position of a point in space.

The most common coordinate system is the Cartesian coordinate system, which uses two axes, the x-axis and y-axis, to represent the position of a point in space. The x-axis is the horizontal axis, and the y-axis is the vertical axis. The origin, or (0,0), is the point where the two axes intersect.Motion sensors are devices that detect the movement of objects.

They are used in a variety of applications, such as robotics, gaming, and security. Motion sensors can be used to detect the movement of objects in a specific direction or to detect the presence of objects in a certain area.

They can also be used to detect changes in temperature or light levels.Both motion sensors will use the same coordinate system by default. If they do not, it can be handled by adjusting the settings on the sensors. The coordinate system should be clearly marked on the graph paper or other surface used to plot the motion of the objects being measured.

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Answer:

and the power to which the number should be raised:

1.50E2 = 1500

4.167E4 = 41,760

4.167E-4 = .0004176

Mass of the earth = 5.98 * 10^24 kg = 5.98E24 kg

Some examples of scientific notation

Answer:

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The speed of the elevator after it has moved downward 1.00 from the point where it first contacts a spring is 2.23 m/s.

The acceleration of the elevator when it is 1.00 below the point where it first contacts a spring is -9.8 m/s².

The speed of the elevator after it has moved downward 1.00 from the point where it first contacts a spring is 2.23 m/s. When the elevator is 1.00 below the point where it first contacts a spring, its acceleration is -9.8 m/s². This is because the elevator is moving downwards and accelerating due to gravity.
To solve for the speed of the elevator after it has moved downward 1.00 from the point where it first contacts a spring, we need to use the formula for potential energy and kinetic energy:
Potential Energy (PE) = Kinetic Energy (KE)
mgh = 1/2 mv²
where m is the mass of the elevator, g is the acceleration due to gravity, h is the height, and v is the velocity.
Rearranging the formula, we get:
v = √(2gh)
Substituting the given values, we get:
v = √(2 × 9.8 × 1) = 2.23 m/s
To solve for the acceleration of the elevator when it is 1.00 below the point where it first contacts a spring, we simply use the acceleration due to gravity which is -9.8 m/s². The negative sign indicates that the acceleration is directed downwards.
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Acceleration of the car is 6 m / s ².

a =  ( v - u ) / t

a stands for acceleration

u stands for initial velocity

v stands for final velocity

Given ,

u = 5 m / s

v = 20 m / s

t = 2.5 s

a =  ( v - u ) / t

a = ( 20 - 5 ) / 2.5

  =  15 / 2.5

 a  = 6 m / s ²

Hence , Acceleration of car is 6 m / s ² .

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The given question is incomplete kindly refer below for complete question :

A car accelerates from 5m/s to 20m/s in 2.5 seconds . Find the acceleration of the car .

Answer:

At point A, the comet has the least kinetic energy because the comet is resting. 3. From point B to point D its orbit's potential energy is decreasing and its kinetic energy is increasing meaning it's moving more and more

My understanding of the concept of when a baby is considered alive is based on the medical, legal, and ethical standards provided by the scientific and medical communities, and it is not based on personal beliefs or opinions.

The determination of when a baby is considered alive is a complex and nuanced issue that is influenced by a variety of factors, including medical, legal, religious, and ethical considerations.

Therefore, it is important to consult with qualified professionals in each area to gain a better understanding of this topic.

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Complete Question:

What I your view on when the baby I alive? What standard or standard are you using to form your opinion?

The time taken for the coffee to cool from 93°C to 73°C is approximately 36.1 minutes.

The cooling law is given by:

$$\frac{dQ}{dt}=-k(T-T_0)$$

where Q is the heat in the object, t is the time taken, T is the temperature of the object at time t, T0 is the temperature of the environment and k is a constant known as the cooling constant.

We need to find the time it takes for the coffee to reach a drinking temperature of 73°C given that its initial temperature is 93°C.

Therefore, we need to find the time it takes for the coffee to cool down from 93°C to 73°C when placed in a room temperature of 18°C.

Let’s assume that the heat energy that is lost by the coffee is equal to the heat energy gained by the environment. We can express this as:

dQ = - dQ where dQ is the heat energy gained by the environment.

We can substitute dQ with C(T-T0) where C is the specific heat capacity of the object.

We can rearrange the equation as follows:

$$-\frac{dQ}{dt}=k(T-T_0)$$

$$-\frac{d}{dt}C(T-T_0)=k(T-T_0)$$

$$\frac{d}{dt}T=-k(T-T_0)$$

The differential equation above can be solved using separation of variables as follows:

$$\frac{d}{dt}\ln(T-T_0)=-k$$

$$\ln(T-T_0)=-kt+c_1$$

$$T-T_0=e^{-kt+c_1}$$

$$T=T_0+Ce^{-kt}$$

where C = e^(c1).

We can now use the values given to find the specific value of C which is the temperature difference when t=0, that is, the temperature difference between the initial temperature of the coffee and the room temperature.

$$T=T_0+Ce^{-kt}$$

$$73=18+C\cdot e^{-0.09t}$$

$$55=C\cdot e^{-0.09t}$$

$$C=55e^{0.09t}$$

$$T=18+55e^{0.09t}$$

We can now solve for the value of t when T=93 as follows:

$$93=18+55e^{0.09t}$$

$$e^{0.09t}=\frac{93-18}{55}$$

$$e^{0.09t}=1.3636$$

$$t=\frac{\ln(1.3636)}{0.09}$$

Using a calculator, we can find that the time taken for the coffee to cool from 93°C to 73°C is approximately 36.1 minutes.

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Answer:

b

Explanation:

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

where

f is the force

m is the mass

From the question

f = 140 N

m = 70 kg

We have

\(a = \frac{140}{70} = \frac{14}{7} \\ \)

We have the final answer as

Hope this helps you

Radio/TV waves has the lower energy than microwaves.

Answer:

1. In environmental science, a community refers to a group of interacting species that live together in a particular habitat. An example of a community is a coral reef ecosystem, which includes a variety of species such as fish, algae, and invertebrates. In order to become a member of a community, a species must be able to survive and reproduce in the habitat and interact with other species.

2. A habitat is the physical environment where a particular species lives and obtains its resources, such as food, water, and shelter. Two or more species can inhabit a habitat if they are able to coexist and share resources without competition or conflict. For example, in a freshwater pond, various species of fish, frogs, and insects can coexist if they occupy different niches within the habitat.

3. Species diversity is greatest under conditions of high productivity, stable environmental conditions, and low levels of disturbance. For example, a tropical rainforest with high levels of rainfall and temperature stability will typically have greater species diversity than a desert with harsh and unpredictable environmental conditions.

4. Protocooperation refers to a mutually beneficial relationship between two species that work together, but not as closely as in mutualism. An example is the relationship between bees and flowers, where bees collect nectar from flowers for food and in the process, help pollinate the flowers. Mutualism is a relationship where both species benefit from each other. An example is the relationship between bees and flowers, where bees collect nectar for food, and in the process, transfer pollen from one flower to another, aiding in reproduction. Commensalism refers to a relationship where one species benefits while the other is neither helped nor harmed. An example is the relationship between barnacles and whales, where barnacles attach themselves to the whale's skin and gain protection and access to food, while the whale is not affected. Parasitism refers to a relationship where one species benefits while the other is harmed. An example is the relationship between ticks and deer, where the tick feeds on the deer's blood, causing harm and potentially spreading disease. Tolerance refers to a species' ability to survive and reproduce in the presence of other species. An example is the ability of some plant species to tolerate shade from other plants. Interactions among species influence what exists in a community by affecting population sizes, distribution, and resource availability. Positive interactions, such as mutualism, can promote coexistence and increase species diversity, while negative interactions, such as competition or predation, can limit population sizes and reduce species diversity.

5. Community changes can be caused by both biotic and abiotic factors, such as climate change, natural disasters, and human activities. Primary succession occurs in areas where no soil exists, such as on newly formed volcanic islands or after a glacier retreats. In this process, pioneer species such as lichens and mosses begin to colonize the area, gradually building up soil and creating conditions for other plant species to grow. Secondary succession occurs in areas where soil already exists, such as after a forest fire or clear-cutting. In this process, plant and animal species gradually recolonize the area, with some species growing more quickly than others depending on their adaptations and the availability of resources. An example of primary succession is the colonization of the volcanic island of Surtsey by pioneer species, while an example of secondary succession is the regrowth of a forest after a fire.

Explanation:

A community in environmental science is a group of different species living together and interacting in a specific area. For example, a coral reef ecosystem is a community where corals, fish, algae, and invertebrates coexist. To become a member of a community, a species needs to find a suitable habitat and establish interactions with other species.

A habitat is the specific physical environment where organisms live. It includes both living and non-living factors that affect survival and reproduction. Two or more species can inhabit a habitat when they can coexist and share resources without significant competition. For instance, a forest habitat accommodates various trees, understory plants, birds, mammals, and insects, each occupying different niches.

Species diversity is greatest under conditions of high ecological complexity, such as diverse habitats, moderate environmental disturbance, and a wide range of resources. Biodiversity is higher in tropical rainforests, coral reefs, and diverse ecosystems that provide various niches for species to thrive.

Protocooperation is a mutually beneficial interaction between different species without full dependency. An example is oxpecker birds feeding on ticks from zebras, benefiting from food while the mammals get parasite removal. Mutualism is a symbiotic relationship where both species benefit, like flowering plants providing nectar for bees while bees aid in pollination. Commensalism benefits one species without affecting the other, such as orchids growing on tree branches. Parasitism benefits the parasite at the host's expense, like ticks feeding on mammalian blood. Tolerance is the ability of species to withstand challenging conditions, such as plants tolerating extreme temperatures.

Interactions among species influence community composition, structure, and dynamics. Positive interactions like mutualism and protocooperation enhance diversity, while negative interactions like competition and predation limit certain species. Predation affects population dynamics and distribution of prey, which cascades through the community. The removal of a keystone predator disrupts the balance, leading to increased prey abundance and potential negative impacts on other species.

Community changes can result from natural disturbances, human activities, climate change, and evolutionary processes. Primary succession occurs in lifeless areas like bare rock, starting with pioneer species such as lichens. They modify the environment, enabling the establishment of other species. Secondary succession happens in disturbed areas with remnants of the previous community, beginning with fast-growing plants and eventually restoring a diverse community. Examples include the formation of a new island through volcanic activity (primary succession) and forest regeneration after a fire (secondary succession).

Tardigrades related to astronomy as they can survive in extreme, harsh environments, including space for long time without oxygen.  The correct option is A , B and C.

A special adaptation that allows the tiny animal known as the tardigrade to curl up into a dry, lifeless ball and survive for decades.

Tardigrades can undergo utter vacuum and intense pressures more than five times as in the deepest ocean. Temperatures up to 300F and as low as -458F is maintained.

They survive in space and for long time for about 10 days. They can live without water for decades.

Thus, the correct option is A , B and C.

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Answer:

Work=force × distance

=45×15

=675

Explanation:

need thanks and make me brainiest if it helps you

The distance of the airplane from the radar will be 1.08×10⁶ m. Distance can refer to a physical length.

Distance is a numerical representation of the distance between two objects or locations.

The distance of the airplane from the radar is found by the formula;

Distance = velocity × time

Distance =  3.0 x 10^8 m/s× 0.0036 s,

Distance =  1.08×10⁶ m.

Hence, the distance of the airplane from the radar will be 1.08×10⁶ m.

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Answer:

11.75 ohms

Explanation:

since its series connection

R equivalent = R1 + R2 = 7.25 + 4.5