what force is this? ​

Considering a 0.95 MeV y-ray photon and Randomized Variables E = 0.95 MeV so the  frequency of light will be 2.294×10²⁰ Hz.

Given,

The energy of photon

E = 0.95 MeV = 0.95× 1.6×10⁻¹³ J or 1.52 × 10⁻¹³ J  

Using E = hυ  

We have:  

υ = E/h = 1.52×10⁻¹³/(6.626×10⁻³⁴)  

= 2.294×10²⁰ Hz  

Thus the frequency of light will be 2.294×10²⁰ Hz.

Associated to each wave vector ~k and polarization state σ there is an electromagnetic normal mode of oscillation with frequency ω(k) = kc and complex amplitude aσ( ~k). In the absence of sources, the behavior of the electromagnetic field is completely described by these normal modes. We will assume the normal modes are defined using periodic boundary conditions.

For each ~k and σ there is a Hilbert space of square integrable functions and a Hamiltonian( ~k). For each ~k and σ there is a basis of energy eigenvectors; the corresponding ladder operators act on this basis by adding and subtracting quanta of energy ω(k).

We can use this basis to induce a basis for the tensor product over all the oscillator Hilbert spaces, which is the state space for the composite system of normal modes, i.e., the electromagnetic field.

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Answer:

B is the right answer

Explanation:

It is decreasing.

A car maintains a constant speed while driving straight ahead.

The acceleration of an object is the rate of change of velocity with time. It is measured in meter per second square.

The car undergoes velocity when there is change in direction of the speed.

Thus, the only option that does not describe acceleration is a car maintains a constant speed while driving straight ahead.

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Answer:

Explanation:

B

Answer:

Rayon

Wool

Silk Yarn

Explanation:

Rayon

This is Fabric A. Rayon basically burns very quickly even quicker than fabrics like cotton and linen. Its ash is gray in color. The rayon fabric smells of burning paper when it is burnt.

Wool:

This is Fabric B. Wool is basically hard to ignite. It burns slowly. Its ash is dark in color. The wool fabric smells of burning hair when it is burnt.

Silk Yarn:

This is Fabric C. The silk yarn shrinks from the flame when it is burned. It has a grayish black ash. The silk yarn fabric smells burnt meat of  when it is burnt.

The boat will bob up and down 12 times per minute on ocean waves with a wavelength of 25 meters and a propagation speed of 5 meters per second.

To determine how many times per minute a boat bobs up and down on ocean waves with a wavelength of 25 meters and a propagation speed of 5 meters per second, we need to calculate the wave frequency.

Wave frequency is the number of waves that pass a given point in a certain period of time, and it can be calculated using the formula:
Frequency (f) = Wave speed (v) / Wavelength (λ)

Plugging in the values, we get:
f = 5 m/s / 25 m = 0.2 waves per second

To find out how many times the boat bobs up and down per minute, we convert the frequency from seconds to minutes:
0.2 waves per second × 60 seconds per minute = 12 waves per minute

Therefore, a boat will bob up and down 12 times per minute on ocean waves with a wavelength of 25 meters and a propagation speed of 5 meters per second.

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Answer:

False

Explanation:

The sun is Yellow, red, orange, and blue. Therefore option B is correct.

The star is moving toward an observer. Therefore option B is correct.

39. The type of radioactive decay represented by the equation provided Gamma. Therefore option A is correct.

40. The statement is completed correctly by the information which states that the coal in Alberta has a lower carbon content than coal in other parts of Canada, resulting in reduced greenhouse gas emissions.

29. graph B depicts the relationship between gravitational field strength and the mass of the International Space Station orbiting Earth.

30. The correct sequence of colors representing the changing temperature from the surface to the atmosphere of the sun is Yellow, red, orange, and blue. Therefore option B is correct.

1. When a star undergoes a blue shift, it indicates that the star is moving toward an observer. Therefore option B is correct.

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No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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It accelerates at about 32 feet per second every second, so it starts falling at zero feet per second and, one second later it is traveling at 32 feet per second. That means that its average speed is 16 feet per second, so it will fall 16 feet in the first second.

The wood will float because its density is less than the density of water. When an object is placed in a fluid, such as water, it experiences an upward force called buoyancy. The buoyant force is equal to the weight of the fluid displaced by the object.

To determine whether an object will float or sink, we compare the densities of the object and the fluid. Density is defined as the mass of an object divided by its volume. In this case, the density of water is 1 g/cm³, and the density of the block of wood is 0.8 g/cm³.

Since the density of the wood is less than the density of water, the wood will experience a buoyant force greater than its weight. This upward buoyant force will be sufficient to counteract the downward force of gravity, allowing the wood to float.

The principle behind this is Archimedes' principle, which states that an object immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid it displaces. In the case of the wood, it displaces an amount of water with a weight greater than its own weight, resulting in the wood floating on the water's surface.

In conclusion, due to the lower density of the wood compared to water, the wood will float when placed in water.

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Part A

The sound generated moves back and forth in simple harmonic motion. The formula for calculating maximum speed, vmax is expressed as

vmax = wA

where

w is the angular velocity

A is the amplitude

Recall,

w = 2 x pi x frequency

Thus,

vmax = 2 x pi x frequency x amplitude

From the information given,

frequency = 1.6KHz

We would convert from KHz to Hz

Recall,

1 KHz = 1 x 10^3 Hz

1.6 KHz = 1.6 x 10^3 Hz

amplitude = 2.5 μm

we would convert μm to m

Recall,

1 μm = 1 x 10^-6 m

2.5 μm = 2.5 x 10^-6 m

pi = 3.14

By substituting these values into the formula, we have

vmax = 2 x 3.14 x 1.6 x 10^3 x 2.5 x 10^-6

vmax = 0.025 m/s

Part B

The formula for calculating maximum acceleration, Amax is

Amax = w^2A

where

a = amplitude

Amax = (2 x pi x frequency)^2A

Amax = (2 x 3.14 x 1.6 x 10^3)^2 x 2.5 x 10^-6

Amax = 252.4 m/s^2

Answer:

Jaliba Kuyateh is the most famous and wealthiest Gambian musician.

Answer:

100

Explanation:

The mirror displacement d is 317.12 nm. In a Michelson interferometer, interference fringes are created due to the interference of two beams of light.

A Michelson interferometer is a device used to measure small changes in the distance between two mirrors. It consists of a beam splitter, two mirrors, and a detector. One beam of light is split into two and travels to the mirrors, where they are reflected back towards the beam splitter. The two beams of light then recombine at the detector, creating an interference pattern.

When one of the mirrors is moved, the interference pattern shifts. The amount of shift depends on the distance moved and the wavelength of the light being used. By measuring the shift in the interference pattern, we can determine the displacement of the mirror.

In this problem, we are given that 250 interference fringe shifts were counted when the mirror was moved a distance d. The wavelength of the light being used is 632.8 nm.

Each interference fringe shift corresponds to a change in the path difference between the two beams of light by one wavelength. So, the total change in the path difference is 250 times the wavelength of the light:

250 × 632.8 nm = 158,200 nm

Therefore, the mirror displacement d is 158,200 nm. However, this displacement is in both directions (i.e., the mirror moved back and forth). To find the displacement in just one direction, we divide by 2:

d = 158,200 nm / 2 = 79,100 nm

Therefore, the mirror displacement d is 79,100 nm in one direction.

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Shorter and the two neutron stars are moving closer together.

Objects experience the greatest acceleration as they approach the central mass, where spacetime is more curved. A white dwarf supernova is this type of stellar explosion, resulting in the reignition of nuclear fusion that degenerates the star, while massive supernovae arise from the gravitational collapse of the star's massive core.

The distance between her two neutron stars in the binary decreases over time due to the emission of gravitational radiation. A typical collision mechanism is when two neutron stars orbit each other. Orbits emit gravitational waves, which slowly decay over time. This is a very slow process and will take a very long time.

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a. The vectors F and B are always at 90 degrees to each other in the relation F = Il x B.

b. The vectors l and B can be at other angles, as well as the vectors F and l.

Thus, the answers are

a. Vectors F and B

b. Vectors I and B and vectors F and I

In the relation F = Il x B, F is the force vector, l is the length vector, and B is the magnetic field vector. This relation describes the force experienced by a current-carrying wire in a magnetic field. The cross product of two vectors is always perpendicular to both original vectors. Therefore, the vectors F and B are always at 90 degrees to each other. However, the vectors l and B can be at different angles, as the angle between them affects the magnitude of the force vector F. Similarly, the vectors F and l can also be at other angles, as the angle between them affects the direction of the force vector F.

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Three charges, each equal to Q, are placed at the three corners of a square of side b. The electric field at the fourth corner is 4kQ/b2.

Three charges Q are placed at three corners of a square as shown above, and the electric field at the fourth corner is required. As there are 3 charges with the same magnitude and same distance from the fourth corner, they produce electric fields, which are equal in magnitude and direction, at the fourth corner.

Let’s find the electric field at the fourth corner using Coulomb's law which is expressed as:

\(\[E = \frac{kQ}{r^2}\]\)

Where, Q is the charge, k is the Coulomb’s constant, r is the distance between the charges

Considering the electric field produced by the charge at the bottom left corner at the fourth corner E1.

As the charge is placed on the diagonal, the perpendicular distance from the charge to the fourth corner is

\(\[r = \frac{b}{\sqrt 2 }\]\)

Using Coulomb's law, we can write the electric field produced by this charge as:

E1 = kQ/b2/2 = 2kQ/b2

We can write the electric field produced by the charge at the top left corner at the fourth corner E2, as:

E2 = kQ/b2

Using the same logic as before, we can write the electric field produced by the charge at the bottom right corner at the fourth corner E3, as:

E3 = kQ/b2

Since the electric field produced by these three charges will be in the same direction, the net electric field at the fourth corner will be the vector sum of the three electric fields calculated above.

Thus,E4 = E1 + E2 + E3 E4 = 2kQ/b2 + kQ/b2 + kQ/b2 E4 = 4kQ/b2

The electric field at the fourth corner is 4kQ/b2.

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Answer:

59, 720 Joules

Explanation:

\(q = mc(t2 - t1) + m(lf) + mc(t2 - t1)\)

first term=ice to 0 degrees

second term=water to ice

third term-water to 30 degrees

\(q = 0.12 \times 2100 \times 20 + 0.12 \times 3.36 \times {10}^{5} + 0.12 \times 4200 \times 30\)

\(q = 59720 \: joules\)

It takes 0.58 seconds for the cargo to hit the ground and it travels 0 feet horizontally.

What is cargo?
Bulk goods transported by water, air, or land are referred to as cargo. In the language of economics, freight refers to cargo that is transported for profit at a freight rate. Originally referring to a shipload, the term "cargo" is now used to refer to all forms of freight, including that transported by rail, van, truck, or intermodal container. Because perishable inventory is always moving toward a final end-use, even when it is kept in cold storage or another similar climate-controlled facility, the term "cargo" is also used to refer to goods in the cold-chain. Freight is a term that is frequently used to refer to the flows of goods that are transported via any mode of transportation. In particular by shipping lines and logistics operators, multi-modal container units, designed even though reusable carriers to facilitate unitized handling of a goods contained, are also known as cargo.

To solve for the time it takes for the cargo to hit the ground, we need to solve for t. To do this, we'll use Equation 1 and set y = 0, since the cargo will hit the ground at y = 0.
0 - 16.1t2 + 4.5
16.1t2 = -4.5
t2 = -4.5 / 16.1
t = √(-4.5 / 16.1) ≈ 0.58 seconds

To solve for the horizontal distance the cargo travels, we'll use Equation 2, setting t = 0.58 seconds.

0.0047(x2) + 4.5
x2 = (4.5 - 4.5) / 0.0047
x2 = 0 / 0.0047
x = √(0 / 0.0047) ≈ 0 feet

Therefore, it takes 0.58 seconds for the cargo to hit the ground and it travels 0 feet horizontally.

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Answer: Voltage

Explanation: EDGE 2020

Answer: Voltage

Explanation:

Answer:

The current would increase.

Explanation:

The current would increase. 10. The relationship between resistance and current in a circuit is that the greater the resistance the less the current and the greater the current the less the resistance is.

if a 1.5-volt battery is removed and placed by a 9-volt battery in a circuit, From Ohm's law we can say that the current flow inside the circuit will increase because the voltage increases (resistance remains constant).

Ohm's Law is a fundamental law of physics that describes the relationship between the three basic electrical quantities: voltage, current, and resistance in a circuit.

It states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. Mathematically, Ohm's Law is expressed as:

V = I x R

Where:

V = the voltage or potential difference between two points in the circuit,       measured in volts (V).

I = the current flowing through the circuit, measured in amperes (A).

R = the resistance of the conductor, measured in ohms (Ω).

In other words, the voltage (V) across a circuit component is equal to the product of the current (I) flowing through the component and its resistance (R). This law is applicable to both DC (direct current) and AC (alternating current) circuits, as long as the resistance is constant.

Ohm's Law can be used to calculate any one of the three variables if the other two are known. For example, if the voltage and resistance in a circuit are known, the current flowing through the circuit can be calculated using the formula:

I = V / R

Here in the question,

The current in a circuit is determined by the resistance of the circuit and the voltage applied to it, according to Ohm's Law. If a 9-volt battery replaces a 1.5-volt battery, the voltage applied to the circuit will increase, which may cause an increase in the current flowing through the circuit if the resistance remains the same.

However, the increase in voltage may also cause an increase in the heat generated by the circuit, which could potentially damage the components or cause a safety hazard. Therefore, it is important to ensure that the components in the circuit can handle the higher voltage before replacing the battery.

It's also important to note that the current may also depend on the internal resistance of the batteries. A 9-volt battery typically has a lower internal resistance than a 1.5-volt battery, which means it can supply more current to the circuit. So, even if the resistance of the circuit remains the same, the current may still increase due to the higher voltage and lower internal resistance of the 9-volt battery.

Hence, The current flowing through the circuit increased when we removed a 1.5-volt battery and replaced it with a 9-volt battery.

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Use function notation to write an equation or expression for each statement the answer will get f(13.5) is 20.

Function f gives the temperature, in degrees celsius, t hours after midnight.Use function notation to write an equation or expression for each statement.

The temperature is provided by the f function in degrees Celsius, t hours after midnight.

Consequently, we shall have f for the temperature at 12:00 AM (exactly midnight) (0).

We will have f at 1:00 AM, one hour after midnight (1).

Additionally, we will have f for 12:00 PM (noon) (12).

The equation for the temperature at 1:30 PM is what we're looking for.

1.5 hours after noon, 1:30 PM is 13.5 hours after midnight.

Consequently, the appropriate sentence would be:

f(13.5)=20.

The complete question is Function f gives the temperature, in degrees Celsius, t hours after midnight. Choose the equation that represents the statement: “At 1:30 p.m., the temperature was 20 degrees Celsius.” Group of answer choices f (1:30) = 20 f (1.5) = 20 f (13:30) = 20 f (13.5) = 20

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Answer:

Newton's 3rd law of motion

Explanation:

According to the question, Newt noticed that It hurt his body more when he Jumped off a high diving board than It did when he Jumped off the lower board. What law of newton is this and why

By the time Newt want to jump, for him to do so, he has to push himself against the ground according to the Newton's 3rd law of motion.

The law states that in every action, there will be equal and opposite reaction.

The force at which he pushes himself against the ground will determine the force at which he will carry himself to jump off the high diving board.

The reaction towards the high diving board will be greater than the reaction towards the low diving board.

Therefore, Newt will hurt his body more when he Jumped off a high diving board than It did when he Jumped off the lower board. And the law of newton that is responsible for this is Newton's third law of motion.

Answer:

\( Energy, \; E = 2.6504 * 10^{-34} \; Joules \)

Explanation:

Given the following data;

Frequency = 4.0 x 10⁹ Hz

Planck's constant, h = 6.626 x 10-34 J·s.

To find the energy of the electromagnetic wave;

Mathematically, the energy of an electromagnetic wave is given by the formula;

E = hf

Where;

E is the energy possessed by a wave.

h represents Planck's constant.

f is the frequency of a wave.

Substituting the values into the formula, we have;

\( Energy, \; E = 4.0 x 10^{9} * 6.626 x 10^{-34} \)

\( Energy, \; E = 2.6504 * 10^{-34} \; Joules \)

Answer:

the anwser you are looking for is B

Explanation:

The volume of a material is related to temperature through thermal expansion and thermal contraction. Different materials will expand and contract at different rates, and the amount of expansion or contraction also depends on the magnitude of the temperature change.

Temperature and volume are related through the phenomenon of thermal expansion and thermal contraction. Thermal expansion occurs when the temperature of a material increases, causing the material to expand or increase in volume. Thermal contraction is the opposite; when the temperature of a material decreases, the material contracts or decreases in volume.

The amount of thermal expansion or contraction that occurs depends on the type of material, as different materials will respond differently to temperature changes. Generally, solids experience more thermal expansion than liquids, and metals experience more thermal expansion than non-metals. This means that when the temperature of a material increases, the volume of a solid material will increase more than the volume of a liquid material; the volume of a metal material will increase more than the volume of a non-metal material.

The amount of thermal expansion or contraction also depends on the magnitude of the temperature change. Generally, the greater the temperature change, the greater the amount of thermal expansion or contraction. For example, if the temperature of a material is increased from 10°C to 20°C, the material may experience a small amount of thermal expansion. However, if the temperature is increased from 10°C to 100°C, the material may experience a large amount of thermal expansion.

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Answer:

the answer from my side is both vertical and horizontal

Answer:

Entirely horizontal

Explanation:

The ball begins the movement with horizontal and vertical velocity, but it is subject to the gravity acceleration, that will break the movement. When it achieves the top of the path, is when the vertical velocity go to 0 and begin to grow in the opposite direction, so in the very top of the path, the velocity is entirely horizontal

A promising evidence of a habitat that might support life on the planet Mars is water.

There is evidence supporting the existence of liquid water on Mars from numerous sources. The finding of repeated black streaks on Martian slopes and the presence of hydrated minerals suggest the potential of seasonal or location-specific briny water flows. A necessary component of life as known is liquid water.

Additionally, Mars possesses underground ecosystems that could provide defence against radiation and severe surface conditions. Researchers have found evidence of ancient underground hydrothermal systems as well as beneath ice. These settings might offer consistent conditions for the development of microbial life.  Methane gas has been found in the Martian atmosphere, along with variations over time, and this has led to questions regarding its origin. Both geological and biological processes can result in the production of methane.

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The formula for the horizontal range is dependent on the initial velocity, angle of projection, and acceleration due to gravity. Therefore, the formula is \(range = velocity\;horizontal \times 2V0y / g \times sin\theta\)

The range of a projectile refers to the horizontal distance it covers during its flight. To derive a formula for the horizontal range of a projectile, we can use the kinematic equations.

The horizontal motion of a projectile is constant, and we can use the equation:

distance = velocity × time

In the horizontal direction, the initial velocity of the projectile remains constant throughout its flight. Thus, the horizontal distance traveled can be calculated as:

range = velocity horizontal × time

To determine the time, we can use the vertical motion equation:

\(y = V0y \times t + 1/2 gt^2\)

Where y is the vertical displacement, V0y is the initial vertical velocity, g is the acceleration due to gravity, and t is the time.

We know that at the maximum height, the vertical velocity is zero. Thus, the time taken to reach maximum height is:

t = V0y / g

The time taken for the projectile to reach the ground from the maximum height is also equal to t.

Substituting this value of t into the horizontal distance equation gives:

\(range = velocity\;horizontal \times 2V0y / g \times sin\theta\)

where θ is the angle of projection.

In summary, the horizontal range of a projectile can be derived using kinematic equations by considering the horizontal motion and vertical motion of the projectile. The formula for the horizontal range is dependent on the initial velocity, angle of projection, and acceleration due to gravity.

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