upon being struck by 240-nm photons, a metal ejects electrons with a maximum kinetic energy of 1.45 ev. what is the work function of this metal?

The weight of the block on the moon is calculated as 12.47 N.

To find the weight of the block on the moon, we need to first determine its mass. We can do this using the formula F = ma, where F is the force applied, m is the mass of the block, and a is the acceleration.

Given, on the Earth, block accelerates at 2.40 m/s2 when 18.5 N horizontal force is applied. So,

18.5 N = m x 2.40 m/s2

Solving for m, we get:

m = 7.71 kg

Now that we know the mass of the block, we can use the formula for weight:

On the moon, as the acceleration due to gravity is 1.62 m/s2, so

So, weight = 7.71 kg x 1.62 m/s2

Weight = 12.47 N

Therefore, the weight of the block on the moon is 12.47 N.

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The resistance of the gold wire cannot be determined with the information given. The resistance of a wire depends on several factors, including its length, cross-sectional area, and resistivity.

While we know the resistance of the aluminum wire, we do not know any of these other factors for the gold wire. Additionally, the resistivity of gold is different from that of aluminum, so even if we did know all the other factors, we could not simply use the same resistance value for the gold wire.

Therefore, to determine the resistance of the gold wire, we would need more information, such as its length and cross-sectional area.

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An agreement between a company and a labor union that represents most of its employees would be most appropriately considered part of a company's: contractual infrastructure.

A worker's guild (English) or trade guild (American English), frequently basically alluded to as an association, is an association of laborers expectation on "keeping up with or working on the states of their employment", for example, accomplishing better wages and advantages, working on working circumstances, further developing security principles, laying out grievance methods, creating rules overseeing status of representatives (rules overseeing advancements, worthwhile motivation conditions for end) and safeguarding and expanding the dealing force of laborers.

Union dues, which are fees that are imposed on a regular basis, are how most trade unions pay for the functions of their head office and legal team. The association delegates in the labor force are normally comprised of working environment volunteers who are frequently selected by individuals through inside equitable races. The rank-and-file members of the trade union negotiate labor contracts (collective bargaining agreements) with employers on their behalf through an elected leadership and bargaining committee.

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Answer:

The type of metal of the wire

The distance from the wire

The amount of the current

Explanation:

The glob would have kinetic energy as it is falling modelled by graph f.

We know that the kinetic energy has to do with the energy that is possessed by a body by virtue of the fact that the body is in motion. We know that kinetic energy is one of the forms of mechanical energy. The term mechanical energy has to do with energy that is at rest or in motion. The energy that is at rest is called the potential energy.

We have been told in the question that a glob of slime is launched or dropped from the edge of a cliff. We have to note that the kinetic energy of the object is going to increase as it is falling to the ground. It then follows that the glob would have its maximum kinetic energy when the glob must have fallen to the ground.

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The resistor of the electric lamp is marked at 240 volts and 60 watts is 960 ohms. Thus, option D is correct.

The resistance is a property that gives obstruction the current flow.  It blocks the current flow in the circuit. The unit of resistance is the ohm.    

From the given,

The voltage of the electric lamp (E) = 240 volt

Power in the circuit (P) = 60 watt

Resistance =?

Power (P) = E² / R

R = E²/P

   = 240×240/60

  = 960 Ω

The resistance of the electric lamp with a given voltage and power is 960 Ω. Thus, the ideal solution is D.

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If the pulling is done parallel to the floor with constant velocity, then the box is in equilibrium. In particular, the weight and normal force cancel, so that

n = 38 N

The friction force is proportional to the normal force by a factor of 0.27, so that

f = 0.27 (38 N) ≈ 10.3 N

and so the answer is D.

Marginalized individuals, including people with disabilities and those who identify as LGBTQ+, can experience significant impacts due to trauma, discrimination, negative attitudes, and exclusion. These factors contribute to physical and psychological harm, hinder access to opportunities and resources, and perpetuate systemic inequalities.

Marginalized individuals, such as people with disabilities, face unique challenges that can exacerbate the impact of trauma, discrimination, negative attitudes, and exclusion. Trauma experienced by individuals with disabilities may result from direct incidents or from the effects of living in a society that is not fully inclusive. Discrimination and negative attitudes towards people with disabilities can lead to social isolation, limited employment prospects, and reduced access to healthcare and education. This exclusion can have long-lasting effects on their mental health, self-esteem, and overall well-being. Similarly, individuals who identify as LGBTQ+ may also face trauma, discrimination, negative attitudes, and exclusion. LGBTQ+ individuals often encounter higher rates of bullying, harassment, and violence due to their sexual orientation or gender identity. These experiences can lead to psychological distress, anxiety, depression, and even post-traumatic stress disorder (PTSD). Discrimination and exclusion from healthcare, housing, employment, and social support systems further compound the challenges faced by LGBTQ+ individuals, hindering their ability to thrive and fulfill their potential.

In both cases, the impacts of trauma, discrimination, negative attitudes, and exclusion are far-reaching. They can contribute to a cycle of disadvantage, limiting opportunities for personal growth, social participation, and economic advancement. Recognizing and addressing these issues is essential for fostering a more inclusive society that supports the needs and rights of marginalized groups, empowering individuals to overcome the barriers they face and promoting their overall well-being.

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Genetic variation can be bad or good to an organism . If it affects positively then, the organism can have more adaptable features to survive in the environment. For those in which worse genetic variations are happens cannot survive and will given out the way to the fittest to live.

Genes are the basic hereditary material in living things. Genes from the parent are inherited to their offsprings. Genes undergo variations or mutations by some internal factors. These can produce both good and bad results.

The given passage can be completed as follows:

Natural selection is defined as a process in which organisms that do will in an environment pass their genes on next generation. Over time, these genes can become more common in a population.

However, natural selection doesn't work in all situations. It works only when there are variations within the population. Some individual are more suited to the environment. This means that they are  better able to survive or reproduce. There must be variations in the genes.

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Explanation:

I shows fastest speed for 1sec ( 3 m/s)

C, G and I are the line segments where the object turned around and changed direction.

Answer:

A supply of electric charges (electrons) which are free to flow, some form of push to move the charges through the circuit and a pathway to carry the charges.

Explanation:

Hope this helps.. ;)

Gravity is an attractive forces between d)all objects everywhere. So, correct option is d.

In this universe every objects tries to attract other object towards itself. Even moon and earth has gravitational force between each other. Tides in ocean and sea are possible due to gravitational force of moon on earth. Moon revolves around earth due to reason of  gravitational force. Gravitational Force is considered as an attractive force. The gravitational Force is given by the formula

F = (GM₁M₂)/r₂

In this earth massive objects exert gravitational force on smaller objects too, but the difference is that the gravitational force acting between the objects are very small in range, due to which we are not able to feel it.

Hence, correct option is d.

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Answer: Through a series of collisions between the gas molecules and dust particles, this material became organized in the form of a circumstellar disk. The circumstellar disk is where the planets formed. ... Not shown, eventually the star blows away the excess gas and some of the dust to become visible.

Explanation: Google

Answer:

It can be reused in another star because the law of conservation of matte states that matter is neither created nor destroyed.

Explanation:

hope this helps

Answer:

2. wavelength

3. Crest

4. Rest

5. Trough

6. Amplitude

Explanation:

The law that describes the relationship between the pressure and volume of a gas in a sealed container is Boyle's law.

Boyle's Law, formulated by the Irish scientist Robert Boyle in the 17th century, describes the relationship between the pressure and volume of a gas at a constant temperature. It states that the pressure of a gas is inversely proportional to its volume when the temperature remains constant.

According to Boyle's law, when the pressure of a gas is cut in half, the volume of the gas will double, as long as the temperature remains constant. This means that if you decrease the pressure exerted on a gas by half, the volume of the gas will increase by a factor of two.

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Answer:

\(mgh = \frac{1}{2} m {v}^{2} \\ v = \sqrt{2gh} \\ = \sqrt{2 \times 9.8 \times 10} \: m. {s}^{ - 1} \)

Option B: The pressure in the neck is equal to the pressure in the knee because of the equal dynamic pressure according to the continuity equation is the answer.

Assuming that the human circulatory system obeys Bernoulli's principle of hydrodynamics, the most accurate comparison of blood pressure in capillaries in the neck and those of equal cross-sectional area in the right knee yields: The neck pressure equals the knee pressure with the same dynamic pressure according to the continuity equation. The Bernoulli equation describes the flow of an incompressible fluid in a pipe and how that flow is affected by changes in pressure. 

In this case, it can be applied to the flow of blood through capillaries in the neck and right knee. The continuity equation, which states that the volume flow rate of fluid through a tube must remain constant, regardless of changes in the tube's cross-sectional area or shape, can also be applied in this case. Because the two capillaries have the same cross-sectional area, the dynamic pressure in both capillaries must be the same because of the continuity equation. This indicates that the pressure in the neck is equal to the pressure in the knee.

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Answer:

F = m*(g - a) →

a = g - F/m = 0.891 m/s² downward

Explanation:

If elevator was stationary, the normal force of elevator floor on man* would be = mg

mg = (38.5)(9.81) ≈ 378 N.

If elevator is accelerating downward the floor is accelerating away from man and so the normal force will be less than man's weight by: 378 - 343 = 35 N.

Hope this helps.

Answer:

-0.891

Explanation:

negative because downward

Answer:

600

Explanation:

Answer:

79

Explanation:

Answer:

it is used because

They are also less likely to jam due to rust in the screw thread.

Hydraulic jacks are often used to lift elevators in low and medium rise buildings.

A hydraulic jack uses a liquid that is forced into a cylinder by a pump plunger.

The resolving power (R) of a grating can have units of dimensionless quantity.

Resolving power is a measure of the ability of an optical instrument to distinguish between two closely spaced wavelengths or spectral lines. It is defined as R = λ/Δλ, where λ is the wavelength of the light being observed, and Δλ is the smallest difference in wavelength that the grating can resolve.  In a diffraction grating, the resolving power is primarily determined by the number of lines (N) on the grating and the order of diffraction (m).

The relationship between the resolving power, number of lines, and the order of diffraction is given by the equation R = mN. Both m and N are dimensionless quantities, so the resolving power is also a dimensionless quantity. In summary, the resolving power of a grating does not have specific units, as it is a dimensionless quantity that represents the ability of the optical instrument to resolve closely spaced wavelengths. It depends on the number of lines on the grating and the order of diffraction, with the relationship being R = mN.

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The weight of the imaginary column of air that "rests" on Elaine's hat is approximately 1588.75 Newtons.

The weight of the imaginary column of air that "rests" on Elaine's hat can be determined using the formula:

Weight = Pressure × Area

First, let's find the area of the hat. The diameter of the hat is given as 45 cm. The formula for the area of a circle is:

Area = π × (radius)²

To find the radius, we divide the diameter by 2:

Radius = 45 cm / 2 = 22.5 cm

Now we can calculate the area:

Area = π × (22.5 cm)²

Area = π × (506.25 cm²)

Next, we need to convert the area to square meters, as the SI unit for pressure is Pascal (Pa), which is equal to 1 N/m²:

Area = π × (506.25 cm²) × (0.01 m / 1 cm)²

Area = π × (506.25 cm²) × (0.0001 m² / 1 cm²)

Area = π × (506.25 cm²) × (0.0001 m² / 0.0001 cm²)

Area = π × (506.25 cm²) × (1 m²)

Area = π × (506.25 cm²) m²

Now we can calculate the weight using the atmospheric pressure, which is given as 1.0 atm:

Weight = (1.0 atm) × (π × (506.25 cm²) m²)

Weight = (1.0 atm) × (π × (506.25 cm²) m²)

Weight = 1.0 atm × (π × 506.25) N

Weight ≈ 1.0 atm × 1588.75 N

Weight ≈ 1588.75 N

Therefore, the weight of the imaginary column of air that "rests" on Elaine's hat is approximately 1588.75 Newtons.

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Answer:

It is transverse wave

Explanation:

Explanation:

yes, it's a transverse wave

hope it helps you

If wrecking ball hits the wall near the top, it is more likely to fall over by rotating at its base than by falling straight down due to torque force.

If the wrecking ball hits the wall near the top, it is more likely to fall over by rotating at its base than by falling straight down. This is because the force of the wrecking ball hitting the top of the wall will create a torque or rotational force, causing the wall to rotate around its base. The height and weight of the wall also contribute to this tendency to rotate, as the force of gravity acting on the wall will increase the torque.

If the wall is struck with the same force at its base, how it falls will depend on how firmly it is attached at its base. If the wall is firmly attached at its base, it is likely to break apart or crack, rather than falling over. If the wall is not firmly attached at its base, it may fall over in the direction of the applied force, or it may break apart and fall in different directions. Factors such as the weight and height of the wall, as well as the force of the impact, will also contribute to how the wall falls.

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Answer:

Moving a magnet around a coil of wire, pushes the electrons in the wire and creates an electrical current.

The moment of inertia about the rotation axis for the given playground toy, with two children sitting opposite each other, is approximately 145.35 kg·m².

To determine the moment of inertia about the rotation axis for the given playground toy, we need to consider the contributions from the seats and the two children.

Given:

Mass of each seat = 6.4 kg

Length of the rods (r) = 1.5 m

Mass of the first child (m₁)= 16 kg

Mass of the second child (m₂) = 23 kg

The moment of inertia of each seat can be calculated using the formula for the moment of inertia of a point mass about an axis:

\(I_{seat} = m_{seat times} r^2\)

For each seat, the moment of inertia is:

\(I_{seat} = 6.4 kg times (1.5 m)^2= 14.4 kg\cdot m^2\)

Now, to calculate the moment of inertia contributed by the children, we need to consider that the children are located opposite each other. Assuming the axis of rotation passes through the center of mass of the children-seats system, the moment of inertia for each child is:

\(I_{child} = m_{child times} r^2\)

For the first child (m₁):

\(I_1 = 16 kg times (1.5 m)^2 = 36 kgm^2\)

For the second child (m₂):

\(I_2 = 23 kg times (1.5 m)^2 = 51.75 kgm^2\)

Finally, we can calculate the total moment of inertia by summing the contributions from the seats and the children:

Total moment of inertia =\(4 times I_{seat} + I_1 + I_2\)

= \(4 times (14.4 kgm^2) + 36 kgm^2 + 51.75 kgm^2\)

= \(57.6 kgm^2 + 36 kgm^2 + 51.75 kgm^2\)

= \(145.35 kgm^2\)

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The potential energy of the car when it let go is 20,000 J.

The speed of the car at the bottom of the ramp is 20 m/s.

The given parameters;

The potential energy of the car is calculated as follows;

P.E = mgh

P.E = 100 x 10 x 20

P.E = 20,000 J

The speed of the car at the bottom of the ramp is calculated as follows;

\(K.E = P.E\\\\\frac{1}{2} mv^2 = mgh\\\\v^2 = 2gh\\\\v = \sqrt{2gh} \\\\v = \sqrt{2 \times 10 \times 20} \\\\v = 20 \ m/s\)

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