Higher intensities emit ____________ wavelengths while lower intensities emit _________ wavelengths. a. Longer, shorter b. Shorter, longer c. Higher, shorter d. Redder, bluer

Answer:

B. They are expensive to collect and transform into energy.

Explanation:

All of the other options are positive aspects of renewable resources. B is the only disadvantage of renewable resources given in the question.

Answer:

They are expensive to collect and transform into energy.

Explanation:

Edge

Answer:

Day when I workout I feel I have more energy, but on days when I don't I feel sluggish and tired

Explanation:

1. Mass of an object

2. Distance between the objects

Answer:

When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

Explanation:

PLEASE let me know you are satisfied with my answer or not☺☺

The total amount of energy and matter in the wood before burning is equal to the energy and matter of the ash, soot, heat, and light after burning.

Therefore, one of the correct options is:

A. The Law of Conservation of Energy applies to these transformations.

In this sense, the other correct option is:

D. The amount of heat and light energy released equals the amount of chemical energy that is burned.

If a 1.50-kg mass is acted upon by a force of 16.0 N applied at an angle of 60° above the horizontal. The acceleration of the mass is approximately 5.33 m/s². Therefore, the correct option is (B) 5.33 m/s².

The given force applied at an angle of 60° is 16 N. The mass of the object is 1.50 kg. We need to calculate the acceleration of the mass. The force is resolved into two components. One component is parallel to the surface and another one is perpendicular to the surface.

We can calculate the parallel and perpendicular components as:

F⊥= F sin θ = 16 sin 60° = 13.86 N.

F|| = F cos θ = 16 cos 60° = 8 N.

Here, F⊥ is the perpendicular force and F|| is the parallel force. So, the perpendicular force acting on the mass is 13.86 N and the parallel force acting on the mass is 8 N. Now we can calculate the acceleration of the mass as:

Net force acting on the object, F = F|| = 8 N. Using Newton's second law of motion, we have:

ma = F ⇒ a = F/m.

Using this value of F and m, we get the acceleration as a = 8 N/1.50 kg ≈ 5.33 m/s². Hence, B is the correct option.

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Answer:

MIRROR

Explanation:

Answer:

reflection of light is the bouncing back of light rats when it falls on a smooth surface or polish surface.

Answer:

The heat energy required to raise the temperature from 20°C to 85°C is 1.46x10^4J

A nostro account and a vostro account are two types of bank accounts used in international transactions. A nostro account is held by a domestic bank in a foreign currency, while a vostro account is held by a foreign bank in the domestic currency.

These accounts facilitate cross-border transactions and provide banks with efficient means to handle international financial operations.

In the context of the Kurdistan region, let's consider a scenario where a local bank, Kurdistan Bank, maintains a nostro account and a vostro account. The nostro account of Kurdistan Bank would be held with a foreign bank, such as a bank in the United States, in US dollars.

This account allows Kurdistan Bank to receive and hold US dollars, which can be used for international transactions with clients or counterparties in the US or other countries using US dollars.

For instance, if a Kurdish company exports goods to the US, the US buyer can transfer payment in US dollars to Kurdistan Bank's nostro account.

On the other hand, Kurdistan Bank may also have a vostro account in a foreign currency, such as the Euro, with a bank located in Europe.

This vostro account allows the European bank to hold funds in Euros on behalf of Kurdistan Bank. It enables the European bank to process transactions in Euros on behalf of Kurdistan Bank's clients who need to make payments or receive funds in Euros, such as importers or exporters in European countries.

A nostro account is a foreign currency account held by a domestic bank, while a vostro account is a domestic currency account held by a foreign bank.

These accounts enable banks to efficiently facilitate international transactions by holding funds in different currencies and providing necessary financial services to clients engaged in cross-border business activities.

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(a) Power required to overcome rolling resistance: P_r = (Fr * V) / 550 hp

Power required to overcome aerodynamic drag: P_d = (Fd * V) / 550 hp

(b) Plot power (P) versus vehicle velocity (V) using the calculated expressions for Pr and Pd.

(c) Higher speeds require more power to overcome resistive forces, leading to lower fuel economy. Maintaining moderate speeds is crucial for improved fuel efficiency.

(a) To determine the power required to overcome rolling resistance and aerodynamic drag, we need to calculate the respective forces and then multiply them by the vehicle velocity.

The rolling resistance force, Fr, is given by the equation Fr = f * W, where f is the rolling resistance coefficient and W is the vehicle weight. Substituting the given values, we have Fr = 0.02 * 3550 lbf.

The aerodynamic drag force, Fd, is given by the equation Fd = 0.5 * Cd * A * rho * V^2, where Cd is the drag coefficient, A is the projected frontal area, rho is the air density, and V is the vehicle velocity. Substituting the given values, we have Fd = 0.5 * 0.34 * 23.3 ft^2 * 0.08 lb/ft * V^2.

To calculate the power required, we multiply the respective forces by the vehicle velocity and convert the units from lbf-ft/s to horsepower (hp). The power required to overcome rolling resistance is P_r = (Fr * V) / 550 hp, and the power required to overcome aerodynamic drag is P_d = (Fd * V) / 550 hp.

(b) To plot the power versus vehicle velocity, we can use the given range of 0 to 75 mi/hr. For each velocity value, substitute it into the equations for Pr and Pd calculated in part (a) and plot the corresponding power values on the graph.

(c) The implication for vehicle fuel economy can be deduced from the results of part (b). The power required to overcome both rolling resistance and aerodynamic drag increases with vehicle velocity. This indicates that at higher speeds, more power is needed to overcome the resistive forces, resulting in higher fuel consumption. Therefore, the fuel economy of the vehicle will likely decrease as the velocity increases, highlighting the importance of maintaining moderate speeds for improved fuel efficiency.

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Answer:

A

Explanation:

The answer option which would produce the most power is: C. A mass of 10 kilograms lifted 10 meters in 5 seconds

Power can be defined as the capacity to do work.

Mathematically, power is given by the formula;

\(Power = \frac{Work \; done}{time} \\\\But, \;Work \; done = mgh\\\\Power = \frac{mgh}{time}\)

Where:

Note: Acceleration due to gravity is equal to 10 \(m/s^2\).

For option A:

\(Work\; done = 5(10)(5)\)

Work done = 250 Joules

\(Power = \frac{250}{10}\)

Power = 25 Watts.

For option B:

\(Work\; done = 5(10)(10)\)

Work done = 500 Joules

\(Power = \frac{500}{10}\)

Power = 50 Watts.

For option C:

\(Work\; done = 10(10)(10)\)

Work done = 1,00 Joules

\(Power = \frac{1000}{5}\)

Power = 200 Watts.

For option D:

\(Work\; done = 10(10)(10)\)

Work done = 1,00 Joules

\(Power = \frac{1000}{10}\)

Power = 100 Watts.

Therefore, a mass of 10 kilograms lifted 10 meters in 5 seconds would produce the most power.

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A radioactive element, also known as a radionuclide or radioisotope, is an element that exhibits radioactivity.

Radioactive elements are the elements that have an unstable nucleus and emit radiation when their nucleus undergoes a process called radioactive decay. Radioactive decay is a random process that occurs in some of the elements with unstable atomic nuclei.

During this process, the nucleus emits alpha, beta, or gamma particles, which transform the nucleus into a more stable state. As a result, these elements are radioactive and can release high-energy particles or electromagnetic waves in the form of radiation, which can be dangerous for living organisms. Radioactive elements are mainly classified into two types: natural radioactive elements and artificially produced radioactive elements.

Natural radioactive elements are those that occur in nature, and their nuclei naturally undergo radioactive decay. For example, Uranium, thorium, and radium are natural radioactive elements. The artificially produced radioactive elements are those that are synthesized through nuclear reactions in a laboratory. For example, technetium and plutonium are artificially produced radioactive elements.

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The measured specific heat will be less than the actual specific heat if a lower value is gotten than the actual mass.

This is defined as the quantity of heat needed to raise a substance's temperature by 1 degree Celsius.

If a substance has a low specific heat capacity , it loses water easily which makes the mass when measured to be smaller than the actual value.

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When visible light shines on the metal surface of a phototube, electrons are emitted due to the photoelectric effect. The work function of the phototube, which is the minimum amount of energy required to remove an electron from the metal surface, is 1.8 eV. This means that the energy of the photons in the visible light must be greater than or equal to 1.8 eV in order to remove electrons from the metal surface.

The maximum kinetic energy of the electrons leaving the surface is 0.92 eV, which means that some of the energy from the photons is used to overcome the attraction of the metal ions and the rest is converted into kinetic energy of the emitted electrons. The difference between the energy of the photons and the work function of the metal is equal to the kinetic energy of the emitted electrons.

So, the energy of the photons in the visible light is greater than or equal to 1.8 eV, but less than or equal to the sum of the work function and the maximum kinetic energy, which is 1.8 + 0.92 = 2.72 eV. Any photons with energy in this range can cause electrons to be emitted from the metal surface.

When visible light shines on the metal surface of a phototube with a work function of 1.8 eV, it causes the photoelectric effect. The maximum kinetic energy of the emitted electrons is 0.92 eV, which means the incoming light has enough energy to overcome the work function and cause the emission of electrons from the metal surface.

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Answer:

NOAA Scienctist

Explanation:

The stakeholder who expressed concern over the removal of the Bloede dam was the NOAA Scientist. So, option C.

A stakeholder is a person, group, or organization that has a vested interest in the choices made and the actions taken by a company, organization, or business initiative.

Here,

Stakeholders are important because, there wouldn't be any projects without them. The project can gain a lot from including its stakeholders.

They can participate in the decision-making process and have an impact on the organization's actions in a way that benefits the project management team.

The dismantling of Bloede Dam was long overdue given the environmental and safety concerns.

The difficulties caused by Bloede Dam are not unusual. Our nation's dams are increasingly hazardous to the environment and dangerous to people, with more than 90,000 dams blocking rivers around the country, including at least 659 in Maryland alone.

Hence,

The stakeholder who expressed concern over the removal of the Bloede dam was the NOAA Scientist. So, option C.

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Answer:

5000 N

Explanation:

Since F - f = ma, where F = driving force = 5000 N, f = opposing force, m = mass of car and a = acceleration of car.

Since the car is moving with constant velocity, a = 0.

So, F - f = ma

F - f = m(0)

F - f = 0

F = f.

Since F = 5000 N and F = f, f = 5000 N.

So, the opposing force is 5000 N

The opposing force car, weight 11000 N that is moving at constant velocity is 5000 N.

The opposing force can be calculated by the formula,

F - f = ma

Where,

F = driving force = 5000 N,

f = opposing force = ?

m = mass of car = 11000 N

a = acceleration of car

Since, the car is at constant velocity, a = 0.

So,

F - f = m(0)

F - f = 0

F = f.

Therefore, the opposing force car, weight 11000 N that is moving at constant velocity is 5000 N.

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Abraham Lincoln

Explanation:

hope it helps you a little

Given:

The mass of two objects is: m1 = m2 = m = 2 kg

The distance between the object is decreased by two-thirds

To find:

How on reducing the distance, the gravitational force between them affects them.

Explanation:

Let the distance between two objects each having mass "m" be "r". The gravitational force between them is given as:

Here, G is the universal gravitational constant.

Substituting the values in the above equation, we get:

Now, the distance between the mass is reduced by two-thirds. Thus, the new distance between them will be "R" which is given as:

Now, the gravitational force between two masses with their distance of separation reduced by two-thirds is given as:

Substituting the values in the above equation, we get:

Substituting equation (1) in equation (2), we get:

From the above equation, we observe that the new gravitational force F2 between two masses when their distance of separation is reduced by two-thirds will be nine times that of the original value of gravitational force F1.

Final answer:

The new gravitational force F2 between two masses when their distance of separation is reduced by two-thirds will be nine times that of the original value of gravitational force F1.

Answer:

data from his experiments

Explanation:

Interestingly, at the time Gregor Mendel primarily performed experiments with pea plants and then recorded his results.

In fact, it is believed that Mendel's genetic experiments took a period of about eight years (1856-1863) after which he published data from his experiments in 1865. It was this data from his experiments with pea plants that led to his development of the theory of inheritance.

Answer:When a wind-up toy is set in motion, elastic potential energy that was stored in a compressed spring is converted into the kinetic energy of the toy's moving parts.

Explanation:

A mother notices that the prescription for her child's contact lenses is 2.00 d. The child's near point is 16.7 cm away from the lens, or approximately 17 cm.

The near point is related to the power of the eye in diopters (D) by the formula:

P = 1/f

Assuming that the contact lens is designed to enable the child to see objects 25.0 cm away clearly, the power of the contact lens can be calculated as follows:

\(P_{lens} = 1/f_{lens}\\P_{lens} = -2.00 D = -2.00 m^({-1}\)

We can use the thin lens equation to relate the focal length of the lens to the distance of the object from the lens and the distance of the image from the lens:

\(1/f_lens} = 1/d_o + 1/d_i\)

where d_o is the distance of the object from the lens (25.0 cm), and d_i is the distance of the image from the lens (which we will assume is the near point).

Solving for d_i, we get:

\(1/d_i = 1/f_{lens} - 1/d_o\\1/d_i = -2.00 m^{-1} - 1/0.25 m\\1/d_i = -2.00 m^{-1} - 4.00 m^{-1}\\1/d_i = -6.00 m^{-1}\\d_i = -0.167 m = -16.7 cm\)

Contact lenses are thin, curved lenses placed on the surface of the eye to correct vision problems or enhance cosmetic appearance. They are made of various materials, including silicone hydrogel, and are available in different designs, such as spherical, toric, and multifocal.

Contact lenses are a popular alternative to traditional eyeglasses because they provide clear, unobstructed vision without the bulk or inconvenience of frames. They are also useful for individuals who participate in sports or have jobs that require clear vision without the risk of glasses falling off or getting in the way. Contact lenses require proper care and maintenance to avoid infections or damage to the eyes. This includes cleaning and disinfecting them regularly, as well as following proper hygiene practices when handling them.

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Answer:

I am not sure if this is the answer

acceleration: 2.2m/s

Explanation:

here

initial velocity(u): 11m/s

Final velocity(v): 33m/s

time taken(t): 10 s

now

a:v-u/t

or

acceleration:final velocity-initial velocity/time taken

or

a: 33-11/10

or

a:22/10, divide it

: a=2.2m/s#

Answer:

Hello, I believe it would have a negative charge considering protons have a positive charge while elctrons have a negative charge

Explanation:

The surface is reflecting wavelengths greater than 690 nm, which falls outside the range of sensitivity for S cones. This means that S cones will have minimal to no response to the reflected light.

S cones, also known as short-wavelength cones or blue cones, are one of the three types of cone cells in the human eye responsible for color vision. They are most sensitive to shorter wavelengths of light, primarily in the blue region of the spectrum.

S cones are most responsive to wavelengths around 420-440 nm, corresponding to the blue region of the visible spectrum. As the wavelength increases beyond this range, the response of S cones decreases. When the wavelength exceeds 690 nm, which is in the longer red part of the spectrum, the response of S cones is significantly diminished.

The lack of S cone response to wavelengths greater than 690 nm is due to the fact that these cones are not optimized to detect longer wavelengths of light. Instead, they are specialized to perceive shorter wavelengths associated with the blue color.

Therefore, in the given scenario, the reflected light containing wavelengths greater than 690 nm will be primarily detected by M and L cones, while the S cones will have minimal or no response to this light.

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The wavelength of sound waves of frequency 23 kHz that travel through the fluid is 0.064 metres.

V =  1480 m/s

f =   23 kHz

We know the relation

V =  f λ

V= velocity in a particular medium

f =  frequency

λ  =   wavelength of sound wave

λ=   \(\frac{1480}{23000}\)

λ  =  0.064 metre

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A 2.0-kilogram cart traveling at a constant speed in a horizontal circle of radius 3.0 meters. The magnitude of the centripetal force of the cart is 24 newtons. The speed of the car is 6 m/s. Thus, Option A is the correct answer.

To find the speed, the given values are,

Mass m = 2 Kg

Radius r =3 meters

Centripetal force = 24 Newtons.

A centripetal force is the force which is made up of two Latin words centrum which means center and peterum which means to seek.

It is defined a force which make a body to follow a curved path. The direction of this force is always orthogonal to the body's motion and it is always towards the fixed point which is instantaneous center of the path's curvature.

Centripetal force is expressed according to the formula;

F = mv²/r

m is the mass of the body

v is the speed of the cart

r is the radius

Substituting the values into the formula and get v,

24 = 2v²/3

24×3 = 2v²

72 = 2v²

v² = 72/2

v² = 36

v =√36

v = 6m/s

Hence, the speed of the cart is 6m/s. Thus, Option A is the correct answer.

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A mountain climber is hanging from a vertical rope, far above the ground and far from the rock face. the forces on the mountain climber are

This is further explained below.

Generally, Tension is defined as the pulling force that is transmitted axially by the means of a string, a cable, a chain or another object of a similar nature, or by each end of a rod, truss member, or another object of a similar three-dimensional nature.

Alternatively, tension can be defined as the action-reaction pair of forces that act at each end of the elements in question.

The gravitational pull that gravity exerts on an item is quantified by that object's weight.

There is a common conception that weight is a vector quantity that represents the gravitational force that is exerted on the item. Some people consider weight to be a scalar number, which they define as the intensity of the gravitational pull.

In conclusion, One of the mountain climbers is suspended on a rope that runs vertically up the mountain, high above the earth, and away from the rock face. Tension and weight are the forces acting upon the mountain climber.

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CQ

A mountain climber is hanging from a vertical rope, far above the ground and far from the rock face. The rope is vertical. Identify the forces on the mountain climber.

The thermal property of an assembly that is directly related to heat flow through a building assembly and is also known as thermal transmittance is called U-value.

The U-value, also known as thermal transmittance, is a measure of the rate of heat transfer through a building assembly, such as walls, roofs, windows, or doors. It quantifies how well the assembly conducts heat. The U-value represents the amount of heat flowing through one square meter of the assembly for every degree of temperature difference between the indoor and outdoor environments.

A lower U-value indicates better insulation and reduced heat loss or gain. It is an important factor in determining the energy efficiency and thermal performance of a building assembly.

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