the voltage or potential difference provides the ____ required for electrons to travel through a circuit

a.charge
b.path
c.push
d.resistance

Using the given values, we can calculate the velocity of the galaxy to be approximately 1875.84 km/s.

The formula for velocity is given as:

v = c((λ-λ0)/λ0)

Where v is the velocity of the galaxy, c is the speed of light, λ is the observed wavelength, and λ0 is the rest wavelength.

We know that the rest wavelength of the hydrogen emission line is 656.3 nm.

We also know that the observed wavelength of this emission line is 660.4 nm.

Using these values, we can calculate the velocity of the galaxy as follows:

v = c((λ-λ0)/λ0)

v = 3.00 x 10^5 km/s((660.4 nm - 656.3 nm)/656.3 nm)

v = 3.00 x 10^5 km/s(0.0062484)

v ≈ 1875.84 km/s

Therefore, the velocity of the galaxy is approximately 1875.84 km/s.

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Answer:

\(A_{1}\) = 0.2 \(m^{2}\)

Explanation:

The pressure on the pistons is given as;

Pressure = \(\frac{Force}{Area}\)

So that,

Pressure on the small piston = \(\frac{F_{1} }{A_{1} }\) and Pressure on the large piston = \(\frac{F_{2} }{A_{2} }\)

Thus,

\(\frac{F_{1} }{A_{1} }\) = \(\frac{F_{2} }{A_{2} }\)

Given that: \(F_{1}\) = 100 N, \(F_{2}\) = 2000 N, \(A_{2}\) = 4 \(m^{2}\).

\(\frac{100}{A_{1} }\) = \(\frac{2000}{4}\)

\(A_{1}\) = \(\frac{100*4}{2000}\)

    = \(\frac{400}{2000}\)

    = 0.2

\(A_{1}\) = 0.2 \(m^{2}\)

The area of the small piston is 0.2 \(m^{2}\).

Explanation:

∑τ = Iα

(6 N) (0.80 m) = I (0.5 rad/s²)

I = 9.6 kg m²

Answer: Plasma is made up of groups of positively and negatively charged particles but particles of a gas are mostly uncharged.

Explanation:

Because unlike ordinary gases, plasmas are made up of atoms in which some or all of the electrons have been stripped away and positively charged nuclei, called ions, roam freely.

Answer:

6m/s

Explanation:

Key

Vi = 4.0 m/s

A  = 2.0 m/s/s

D  = 5.0 m

Vf = X or ??

Vf =Vi+2ad

Vf =(4m/s)+ 2(2m/s)(5m)

Vf =16(m/s)+ 20(m/s)

Vf =36(m/s)

Vf =6m/s

The distance between the stations is 1320 m

We'll begin by calculating the distance travelled by the train in the first 20 s. This can be obtained as follow:

s = ut + ½at²

s = (0 × 20) + (½ × 1.1 × 20²)

s = 0 + 220

s = 220 m

The distance between the stations can be obtained as illustrated below:

Total distance = 220 + 110

Total distance = 1320

Thus, the distance between both stations is 1320 m

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A patient is referred to a physical therapist for treatment of chronic neck pain. During the examination, the therapist notices that the patient has a marked ulnar drift.

Step 1: The physical therapist will assess the patient's neck pain, range of motion, strength, and posture to develop an appropriate treatment plan.

Step 2: Since ulnar drift is observed, the therapist will also evaluate the patient's hand and wrist function, as ulnar drift is a deformity typically seen in the hands.

Step 3: The treatment plan will address both the chronic neck pain and the ulnar drift, using techniques such as manual therapy, stretching, strengthening exercises, and postural education.

Step 4: The physical therapist may recommend adaptive equipment or splints to support the patient's hand and wrist and help reduce ulnar drift progression.

Step 5: Regular follow-ups with the physical therapist will be important to monitor progress, adjust the treatment plan as needed, and ensure the patient is effectively managing their neck pain and ulnar drift.

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The strength of the electric field at a distance of 4.4 cm from a small plastic bead that has been charged to -8.0 nc is given by the equation: E = (kQ)/r²where k is Coulomb's constant, Q is the charge on the small plastic bead, and r is the distance between the small plastic bead and the point where the electric field is being calculated.

Substituting the given values in the above equation, E = (9 × 10^9 Nm²/C²) × (-8.0 × 10^-9 C) / (0.044 m)²= -3.0 × 10^4 N/C, which is the strength of the electric field at a distance of 4.4 cm from the small plastic bead.

In order to calculate the strength of the electric field at a distance of 4.4 cm from a small plastic bead that has been charged to -8.0 nc, we can use the equation E = (kQ)/r² where k is Coulomb's constant, Q is the charge on the small plastic bead, and r is the distance between the small plastic bead and the point where the electric field is being calculated.

Substituting the given values in the equation, we get the strength of the electric field to be -3.0 × 10^4 N/C. Therefore, at a distance of 4.4 cm from the small plastic bead, the strength of the electric field is -3.0 × 10^4 N/C.

The strength of the electric field at a distance of 4.4 cm from a small plastic bead that has been charged to -8.0 nc is -3.0 × 10^4 N/C. This was calculated using the equation E = (kQ)/r² where k is Coulomb's constant, Q is the charge on the small plastic bead, and r is the distance between the small plastic bead and the point where the electric field is being calculated.

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When viewed straight down (90° to the surface), an incident light ray moving from water to air does not undergo refraction as it passes through the interface.

When viewed straight down (90° to the surface), the incident light ray moving from water to air does not undergo refraction as it passes through the interface. Refraction occurs when light passes from one medium to another at an angle. At 90°, the light ray travels perpendicular to the surface, resulting in a normal incidence. In this case, the light ray does not change its direction as it transitions from water to air. The refractive index governs the bending of light at the interface, but at 90°, the change in direction is negligible. Therefore, the incident light ray appears to continue in a straight line without deviation when observed directly from above.

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A constant pressure and temperature chamber, full with 50 % air and 50 % carbon dioxide (by mass) at 1 bar and 30 °C, is fed with a flow of steam. The specific humidity is zero

The specific humidity at which the mixture becomes saturated can be determined through the following approach:

A constant pressure and temperature chamber contains a mixture of 50% air and 50% carbon dioxide (by mass) at a pressure of 1 bar and temperature of 30°C, which is fed with a flow of steam.

Therefore, the total pressure within the chamber will be the sum of the pressure of the dry air component, the pressure of the CO2 component, and the pressure of the water vapor in the chamber.

The total pressure in the chamber can be determined as follows:

P = P_air + P_CO2 + P_H2OP_air = 0.5(1 bar) = 0.5 barP_CO2 = 0.5(1 bar) = 0.5 barThe partial pressure of the water vapor can be determined using the following formula:P_H2O = ϕ(P-P_H2O)

where

P = total pressure in the chamberP_H2O = vapor pressure at the chamber temperatureϕ = specific humidity

The vapor pressure of water at 30°C can be found from a steam table to be 4.246 kPa.

Therefore,P_H2O = 4.246/100 = 0.04246 bar

Substituting the given values,P_H2O = ϕ(1 - 0.5 - 0.5)P_H2O = ϕ(0)P_H2O = 0

Therefore, the specific humidity at which the mixture will become saturated is ϕ = P_H2O/(P-P_H2O) = 0/1 = 0.The specific humidity is zero.

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Answer:

390000

Explanation:

The momentum is huge. You wouldn't want this thing to hit you.

Momentum = m*v

m = 13000 kg

v = 30 m/s

Momentum = 13000 * 30

Momentum = 390000 kg m/s

Answer:

To summarize, the term job refers to a specific occupational function or position, such as cook, teacher, or banker, whereas work refers to things that you undertake in general. Surprisingly, while all occupations need effort, actual work isn't necessarily a must.

Explanation:

Answer:

b d c a

Explanation:

It is crucial to warm crucibles before use to lessen thermal stress on them.

Crucibles and covers are made up of porcelain that are like ceramic that contains pores in it. Any kind of water molecules from the air gets trapped in the pores of these crucible and cover.

These water molecules need to be driven out before the initial massing of the crucible and cover. The preheating helps to drive out these water molecules from the pores.

By raising the crucible’s temperature to 200°C, moisture will be removed in this step. Crucibles are protected from potential moister risk by the moister elimination procedure.

Crucibles that are brand-new or have seen a lengthy pause should be progressively heated to 200°C.

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Answer:

1. Motion

2. Empty space

3. Far apart

4. Independently

5. Random or rapid

6. Collision

7. Kinetic energy

8. Atmospheric

9. 273 Kelvin or 0° Celsius

10. 1 atm, 101.3 kPa or 760 mmHg

Explanation:

In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.

Generally, matter exists in three (3) distinct or classical phases and these are;

I. Gas.

II. Solid.

III. Liquid.

Filling the missing words or texts in the question, we have;

The kinetic theory describes the motion of particles in matter and the forces of attraction between them. The theory assumes that the volume occupied by a gas is mostly empty space, that the particles of gas are relatively far apart, move independently of each other, and are in constant random or rapid motion. The collision between particles are perfectly elastic so that the total kinetic energy remains constant. Gas pressure results from the simultaneous collisions of billions of particles with an object. Barometers are used to measure atmospheric pressure. Standard conditions are defined as a temperature of 273 Kelvin or 0° Celsius and a pressure of 1 atm, 101.3 kPa or 760 mmHg.

Answer: the force when the catapult swings has the same force as it does when coming down

Explanation:

for every reaction there is an equal opposite reaction

When a star runs out of nuclear fuel, it undergoes a collapse, causing its radius to become f times smaller. The force of gravity on its surface will increases by a factor of f².

As the star's radius decreases, its mass remains constant. According to Newton's law of universal gravitation, the force of gravity (F) between two objects is directly proportional to the product of their masses (M₁ and M₂) and inversely proportional to the square of the distance (r) between them. The equation is F = G(M₁M₂)/r², where G is the gravitational constant.

In this scenario, the mass of the star (M₁) and the mass of an object on the surface (M₂) remain unchanged. However, the distance (r) between their centers of mass, which is equal to the star's radius, is now f times smaller. Therefore, r becomes r/f.

Substituting the new distance into the equation, we get F' = G(M₁M₂)/((r/f)²), which simplifies to F' = G(M₁M₂)f²/r². Since F = G(M₁M₂)/r², we can rewrite the equation as F' = f² * F.

In conclusion, as the star's radius becomes f times smaller, the force of gravity on its surface increases by a factor of f². This means that the gravitational force on the surface of the collapsed star is much stronger than before, due to the decrease in radius.

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The accurately described circuit is option D. In a series circuit, the amount of current passing through each part of the circuit may vary.

In a series circuit, components are connected one after another in a single path, forming a loop. The same current flows through each component in a series circuit, meaning that the current is constant throughout the circuit. This is known as Kirchhoff's current law, which states that the total current entering a junction is equal to the total current leaving the junction.

However, the amount of current passing through each individual component may vary. This is because the components in a series circuit offer different amounts of resistance to the flow of current. According to Ohm's Law, the current in a circuit is determined by the voltage applied and the resistance of the circuit.

Components with higher resistance will restrict the flow of current more, causing a decrease in the amount of current passing through them. Therefore, in a series circuit, the current remains the same at any point in the circuit, but the amount of current passing through each component may vary depending on its resistance. Therefore, the correct answer is option D.

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A radio telescope's sensitivity to the frequency range is referred to as its bandwidth. It's an essential aspect of any radio telescope, as it determines the width of the radio spectrum that the telescope can receive. It is measured in MHz or GHz.

The range of frequencies that a radio telescope is sensitive to is referred to as its bandwidth. This bandwidth determines the width of the radio spectrum that the telescope can receive. It's an essential aspect of any radio telescope.  

Radio telescopes are instruments that astronomers use to detect radio waves from space. They can detect a wide range of radio frequencies from astronomical objects in space. The bandwidth of a radio telescope is the range of frequencies it can detect.  Radio waves travel at different frequencies, and radio telescopes must be able to detect these frequencies to collect data accurately. The bandwidth of a radio telescope is determined by its design. It's typically measured in megahertz (MHz) or gigahertz (GHz).

In conclusion, a radio telescope's sensitivity to the frequency range is referred to as its bandwidth. It is measured in MHz or GHz. The bandwidth of a radio telescope is an essential aspect of any radio telescope as it determines the width of the radio spectrum that the telescope can receive.

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Explanation:

Given parameters:

Force  = 500N

Acceleration  =

Unknown:

Weight can be used to this problem = ?

Solution:

Weight is the vertical force on a body;

       Weight  = mass x acceleration

So from this we can find the mass and then convert to the second wealth.

Answer:

true

Explanation:

Sound travels faster in water compared with air because water particles are packed in more densely.

Answer:

it's C

Explanation:

have a nice day............

Answer:

0

Explanation:

The linear expansivity of a material is the fractional increase in length for a unit increase in temperature. To calculate linear expansivity for a length of 120m that assumed a new length of 120.0 when heated through a temperature of 100°C, you would use the following formula:

Linear Expansivity = (New Length - Original Length) / (100°C - 0°C)

Therefore, the linear expansivity of the material in this example would be:

Linear Expansivity = (120.0 - 120.0) / (100°C - 0°C)

Linear Expansivity = 0.

Answer:

The linear expansivity of length 120m when heated through a temperature of 100°C can be calculated by using the following equation: ΔL/L × (1 / T) = α, where ΔL is the change in length, L is the original length, T is the temperature and α is the linear expansivity. In this case, ΔL would be 0, as the original and new length are the same. Therefore, the linear expansivity of length 120m when heated through a temperature of 100°C is 0. Here is a Brainly link that can provide you with more information on linear expansivity: https://brainly.com/question/5861312.

Answer: I hope you find it useful

Explanation: Group 2 elements have two valence electrons. The two valence electrons are easily lost in the formation of chemical bonds. Once the two electrons are lost, the atom then has a full outer shell and is therefore more stable.

so,  if an atom has valency 2 , then it means that the atom can combine with 2 other atoms .

Answer:

i hope this helps!

Explanation:

Artificial Insemination (AI) is an Assisted Reproductive Technology (ART) used worldwide to deposit stored semen directly into a cow or heifer's uterus. It is a tool for improving reproductive performance and genetic quality of livestock.

source: https://nwdistrict.ifas.ufl.edu/phag/2020/05/29/tips-for-successful-artificial-insemination-of-cattle/

Answer:

I. 0 m/s

II. 20 m/s

III. Part BC

Explanation:

I. Determination of the initial velocity.

From the diagram given above,

The motion of the car starts from the origin. This implies that the car start from rest and as such, the initial velocity of the car is 0 m/s

II. Determination of the maximum velocity attained.

From the diagram given above, we can see clearly that the maximum velocity is 20 m/s.

III. Determination of the part of the graph that represents zero acceleration.

It important that we know the meaning of zero acceleration.

Zero acceleration simply means the car is not accelerating. This can only be true when the car is moving with a constant velocity.

From the graph given above, the car has a constant velocity between B and C.

Therefore, part BC illustrates zero acceleration.

A rocket sled moves along the horizontal plane under the presence of a friction force µmg, where m is the mass of the sled at that moment and µ is the coefficient of kinetic friction.The rocket propels itself by ejecting mass at a constant rate dm/dt = −R, and the fuel is ejected at a constant speed u relative to the sled.

The sled starts from rest with initial mass M, and stops ejecting fuel when half the mass has been expended. A)The sled’s motion can be studied by using the second law of motion, i.e., F = ma. It shows that if an unbalanced force acts on an object, then it accelerates. In this case, the sled has friction, so its motion is under the influence of an unbalanced force.The force equation can be written as:F = m dv/dtwhere F is the net force on the sled, m is the sled’s mass, and dv/dt is the acceleration.

We know that the sled is being propelled by ejecting mass at a constant rate dm/dt = −R. So, the force equation can be written as: F = −R(dv/dt)Also, F = µmg, so µmg = −R(dv/dt)This equation can be solved to get the sled’s velocity as a function of time. After solving it, we get:

v(t) = u ln [M/(M/2 - Rt)] - µgt

where u is the ejection speed of fuel relative to the sled and g is the acceleration due to gravity. We can use this equation to find out how long it takes for the sled to finish ejecting fuel. The sled stops ejecting fuel when half of its mass has been expended, so the mass of the sled at that moment is M/2. Hence, we can write the equation as:

M/2 = M - Rt

The sled’s mass is decreasing with time, so t = (M - M/2)/R = M/2R. Therefore, the time taken by the sled to finish ejecting fuel is M/2R.

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