A proton with kinetic energy T=10 MeV flies past a stationary free electron at a distance b=10 pm. Find the energy acquired by the electron, assuming the proton's trajectory to be rectilinear and the electron to be practically motionless as the proton flies by.

Energy bonds for utilities tied to Bakken shale oil are especially risky because of the volatile nature of the oil industry and because their oil is expensive to extract due to its geographic location.

The Bakken shale oil fields in North Dakota and Montana have been a major source of oil production in the United States, but the industry has seen a lot of ups and downs in recent years. This volatility can make it difficult for utilities to accurately predict their revenues and expenses, which can make it difficult to repay the bonds.

Additionally, the Bakken shale oil fields are subject to a number of environmental and regulatory risks, which can also impact the profitability of the utilities. As a result, energy bonds for utilities tied to Bakken shale oil are considered to be especially risky investments.

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The axial resistance of an axon is calculated using the formula R = ρL/A, where ρ is the resistivity, L is the length, and A is the cross-sectional area. In this case, the axial resistance is 11.28 MΩ.

The resistance along the axon is calculated using the following formula:

R = ρL/A

where:

R is the resistance in ohms

ρ is the resistivity in ohms per meter

L is the length in meters

A is the cross-sectional area in meters squared

In this case, we have:

ρ = 1.6 x 107 Ω.m

L = 0.5 mm = 0.0005 m

A = πr² = π(5 x 10-6)² = 7.854 x 10-13 m²

Therefore, the resistance is:

R = ρL/A = (1.6 x 107 Ω.m)(0.0005 m) / (7.854 x 10-13 m²) = 11.28 MΩ

Therefore, the axial resistance of the axon is 11.28 MΩ.

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Answer:

around 30 grays

Explanation:

Hope this helps :)

The process of fusion that keeps our Sun shining begins with which building blocks is neutrons. The correct answer is C.

The process of fusion that powers the Sun, known as nuclear fusion, begins with two protons, which are the positively charged particles found in the nucleus of an atom.

During the fusion process in the Sun's core, two protons combine to form a deuteron, which is a nucleus of deuterium, an isotope of hydrogen. This deuteron then undergoes further fusion reactions to produce helium and release a tremendous amount of energy in the form of light and heat. This continuous fusion process is what keeps our Sun shining.

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The length of the wire is 0.097 meters.

To calculate the length of the wire, we need to find the circumference of the sphere first.

Circumference of the sphere = π × diameter

  = π × 6 cm

 = 18.8496 cm

The wire has a diameter of 0.2 cm. We can use this to find the radius of the wire.

Radius of the wire = diameter / 2

 = 0.2 cm / 2

  = 0.1 cm

Now, we can find the length of the wire by calculating the length of the curved wire that makes up the sphere plus the length of the two straight ends.

Length of the curved wire = Circumference of the sphere

 = 18.8496 cm

Length of the two straight ends = 2 × radius of the wire

  = 2 × 0.1 cm

 = 0.2 cm

Total length of the wire = Length of the curved wire + Length of the two straight ends

= 18.8496 cm + 0.2 cm

= 19.0496 cm

Finally, we need to convert the length to meters.

Length of the wire in meters = Total length of the wire / 100

= 19.0496 cm / 100

= 0.190496 m

Rounding to three decimal places, the length of the wire is 0.097 meters.

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Answer: Hydrogen is a chemical element with atomic number 1 which means there are 1 protons in its nucleus. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z.

Explanation: hope this helps

Answer:

Light has the properties of waves.

You will remember from art class that the primary colours are red, yellow and blue.

Light has primary colours as well.

Light from the Sun is a natural example of white light.

The final important property of light to remember is that light always travels in a straight line.

Explanation:

Answer:

What are the Properties of Light?

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A driver should maintain the same distance when following a motorcycle as they would when following a car.

When driving behind a motorcycle, it is essential for a driver to exercise caution and keep a safe distance, just as they would when following a car. Motorcycles are smaller in size, which can make them appear farther away than they actually are. It is crucial for drivers to remember that motorcycles can stop more quickly than cars due to their smaller size and better braking capabilities. By maintaining an adequate distance, drivers allow themselves enough time to react and brake in case of sudden stops or emergencies.

Moreover, motorcycles can be more vulnerable to external factors such as wind or obstacles on the road. To avoid creating hazardous conditions for the motorcycle rider, it is important for drivers to provide sufficient space. This ensures that the motorcycle has enough room to maneuver safely without the risk of losing control.

Regardless of the driver's level of experience, it is crucial to never assume that the motorcycle rider possesses the same level of expertise. By maintaining the same distance as when following a car, drivers demonstrate a responsible and cautious approach towards sharing the road with motorcycles.

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The wavelengths of visible light that interfere constructively when reflected depend on the thickness and refractive index of the reflecting medium. More information is needed to provide a specific answer.

The thickness and refractive index of the reflecting material determine whether visible light wavelengths interact positively when reflected. A light wave's energy is partially reflected and partially transmitted into the medium when it is reflected from a substance with a variable refractive index. The front and back surfaces of the medium's reflected waves will interact constructively if the medium's thickness allows for this.

The specific thickness and refractive index of the medium will determine the colours that are produced. Consequently, further details are required to offer a precise response. The wavelength range of visible light is between 380 and 700 nanometers.

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The type of light that best illustrates the photoelectric effect is (c) ultraviolet light. Hence, the correct answer is option c).

Photoelectric effect refers to the emission of electrons from a metallic surface when a light of suitable frequency shines on the surface of the metal. The phenomenon, first noticed by Heinrich Hertz in 1887, was explained in 1905 by Albert Einstein when he used Planck's hypothesis to illustrate that light energy is carried in discrete quantized packets to describe the photoelectric effect.

In relation to photoelectric effect, the type of light that best illustrates it is ultraviolet light. This is because ultraviolet light has a high enough frequency to remove electrons from the metal surface. As a result, electrons that absorb photons with enough energy from the ultraviolet region of the electromagnetic spectrum will be ejected from the metal, causing the photoelectric effect, and producing an electric current.

When light is shone on a metallic surface, an electric current is produced, which is called the photoelectric effect. The photoelectric effect is caused by the emission of electrons from a metal surface that is exposed to a light of suitable frequency. The energy of the electrons depends on the frequency of the light, and the intensity of the light determines the number of electrons ejected from the surface.

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Answer:

Uniform velocity involves a straight-line motion over equal distance and in equal time intervals. Non-uniform motions involve unequal distances in equal interval of time.

Explanation:

A body moving with uniform velocity occurs when it travels in  a straight line path, and covers equal distances in equal time intervals.

Example a graph of a bike covering equal distance in equal time intervals.

A body moving with a non-uniform velocity occurs when it travels to cover unequal distance in equal intervals of time. Example a bike travelling in a crowded road.

Answer:

(a)  v = 0 m/s

(b)  v = 6 m/s

(c)  6 m

(d)  a = 0 m/s²

(e)  a = 0.75 m/s²

Explanation:

A velocity-time graph shows the velocity (speed) and direction an object travels over a specific period of time.

A horizontal line means constant velocity.

When v = 0 m/s, the object is at rest.

Acceleration is the slope of the line. (A positive slope is acceleration, and a negative slope is deceleration).

Displacement (distance traveled) is the area under the graph.

Part (a)

The object's initial velocity is when t = 0 s.

Therefore, from inspection of the graph, the initial velocity is:

Part (b)

The object's final velocity is when t = 8 s.

Therefore, from inspection of the graph, the final velocity is:

Part (c)

To calculate the displacement of the object from t = 0 s to t = 2 s, find the area under the graph between those times.

The area is a triangle with base 2 and height 3.  Therefore, using the area of a triangle formula:

Part (d)

The line between t = 2 s and t = 4 s is horizontal.  Therefore, the velocity between these times is constant and so the acceleration of the object is zero:

Part (e)

To calculate the acceleration of the object from t = 4 s to t = 8 s, find the slope of the line between these two points:

\(\implies \textsf{slope}=\dfrac{\textsf{change in $y$}}{\textsf{change in $x$}}=\sf \dfrac{6-3}{8-4}=\dfrac{3}{4}=0.75\)

Therefore, the acceleration of the object from t = 4 s to t = 8 s is:

Based on the observed data of the force acting on the coaster car and its acceleration, the mass of the coaster car is determined to be \(\(\mathbf{m}\)\) grams.

To calculate the mass of the coaster car, we can use Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration F = ma. Rearranging the equation, we have \(\(m = \frac{F}{a}\)\), where m is the mass of the coaster car,F is the force acting on the car, and a is the acceleration.

Given the data of the force acting on the coaster car and its acceleration, we can substitute the values into the equation to find the mass. It is important to ensure that the force is in the appropriate units (such as Newtons) and the acceleration is in the appropriate units (such as meters per second squared) to obtain the mass in grams.

Once the calculations are performed, the mass of the coaster car can be determined. Remember to convert the mass to grams if necessary, using appropriate conversion factors.

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The symbol V in the given equation is explained by the quantity theory of money. Here, V denotes the velocity of money circulation.

The quantity theory of money helps to explain the relationship between the good's price and the money supply. This relationship is explained by the Fisher equation as M×V=P×Y. Here, the total amount of the money or money supply is denoted by M, the velocity of money circulation is denoted by V, the price level is denoted by P, and the real output or real income is denoted by Y.

This theory helps to determine the value of money. This also helps to stop inflation.

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To restrict access to a small LAN when configuring a switch, a systems administrator can use various techniques.

Here's a step-by-step explanation:
1. Enable port security: By enabling port security, the administrator can restrict access to specific MAC addresses. The switch will only allow traffic from the authorized devices connected to the configured ports.

2. Configure VLANs: Virtual LANs (VLANs) can be set up to logically separate the network into different segments. By assigning specific ports to different VLANs, the administrator can control access to each VLAN, ensuring that only authorized devices can communicate within their assigned VLAN.

3. Implement Access Control Lists (ACLs): ACLs allow the administrator to define specific rules for controlling network traffic. By configuring ACLs on the switch, the administrator can permit or deny traffic based on various criteria, such as IP addresses, port numbers, or protocols.

4. Enable Port-based Authentication: Using protocols such as IEEE 802.1X, the administrator can enforce authentication for devices trying to access the LAN through the switch ports. This way, only authorized devices with valid credentials will be granted access.

5. Disable unused ports: To further restrict access, the administrator should disable any unused switch ports. This prevents unauthorized devices from connecting to the network through those ports.

6. Enable SNMPv3: Simple Network Management Protocol version 3 (SNMPv3) provides secure access to the switch for network management purposes. By enabling SNMPv3 and configuring the necessary security settings, the administrator can ensure that only authorized personnel can access and manage the switch.

By implementing these measures, a systems administrator can effectively restrict access to a small LAN and enhance network security.

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The amount of energy radiated each second by the body increases by a factor of 10000 (option D)

To determine the factor in which the amount of energy radiated per second increases, we shall determine the energy per second at 3000 K. Details below:

P₁ / T₁⁴ = P₂ / T₂⁴

P / 300⁴ = P₂ / 3000⁴

Cross multiply

300⁴ × P₂ = P × 3000⁴

Divide both sides by 300⁴

P₂ = (P × 3000⁴) / 300⁴

P₂ = P × 10000

From the above calculation, we can see that the energy per second at 3000 K, is 10000 times the energy per second at 300 K.

Therefore, we can conclude that the energy radiated increase by a factor of 10000 (option D)

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Answer:

Approximately \(52\; {\rm ^\circ C}\) (approximately \(325\; \rm K\)), assuming that nitrogen is an ideal gas.

Explanation:

Let \(R\) denote the ideal gas constant. By the ideal gas law, the following equation would relate these quantities:

\(P \cdot V = n \cdot R \cdot T\).

Rearrange this equation to obtain an expression for \(T\):

\(\begin{aligned}T &= \frac{P \cdot V}{n \cdot R}\end{aligned}\).

Look up the ideal gas constant: \(R \approx 8.314\; \rm Pa \cdot m^{3} \cdot K^{-1} \cdot mol^{-1}\).

Convert each measurements from the question to standard units:

Substitute these values into the expression for \(T\):

\(\begin{aligned}T &= \frac{P \cdot V}{n \cdot R} \\ &\approx \frac{101.3\times 10^{5}\; \rm Pa \times 0.080\; \rm m^{3}}{3.0\; \rm mol \times 8.314\; \rm Pa \cdot m^{3} \cdot K^{-1} \cdot mol^{-1}} \\ &\approx 324.91\; \rm K\end{aligned}\).

Convert the unit of this temperature to degrees celsius:

\(\begin{aligned} & 324.91\; \rm K \\ =\; & (324.91 - 273.15)\; {\rm ^\circ C} \\ \approx \; & 52\; {\rm ^\circ C} \end{aligned}\).

Part A:, the magnitude of the velocity of ball B just after it rebounds from the cushion at C is 3.07 m/s.

Part B: the angle θ just after ball B rebounds from the cushion at C is 55.4°.

Part A: To solve for the magnitude of the velocity of ball B just after it rebounds from the cushion at C, we can use the conservation of momentum and the conservation of kinetic energy.

Let's denote the final velocities of ball A and B as (υA)2 and (υB)2, respectively.

Conservation of momentum:

mAvA + mBvB = mAvA2 + mBvB2

where m is the mass of the ball and v is its velocity.

Substituting the given values and solving for (υB)2, we get:

(0.4 kg)(5 m/s) + (0.4 kg)(0) = (0.4 kg)(υA)2 + (0.4 kg)(υB)2

2 kg m/s = 0.4 kg (υA)2 + 0.4 kg (υB)2 (υB)2 = 5 - 0.2 (υA)2

Conservation of kinetic energy:

(1/2)mAvA² = (1/2)mAvA2² + (1/2)mB(υB)2²

Substituting the given values and (υB)2 from above, we get:

(1/2)(0.4 kg)(5 m/s² = (1/2)(0.4 kg)(υA)2²+ (1/2)(0.4 kg)[5 - 0.2 (υA)2]²

Simplifying and solving for (υA)2, we get:

(υA)2 = 4.15 m/s

Substituting this value in the equation for (υB)2, we get: (υB)2 = 3.07 m/s

Part B: To solve for the angle θ just after ball B rebounds from the cushion at C, we can use the law of reflection, which states that the angle of incidence is equal to the angle of reflection.

Let's denote the angle of incidence as α and the angle of reflection as θ. We can solve for θ using the equation: θ = 2α - 90°

To find α, we need to find the angle of the velocity vector of ball B just before it collides with the cushion at C. This can be found using basic trigonometry:

tan α = (υBx)/(υBy)

where υBx is the x-component of the velocity vector and υBy is the y-component of the velocity vector.

We can find υBx and υBy using the conservation of momentum equations: mAvAx + mBvBx = mAvA2x + mBvB2x mAvAy + mBvBy = mAvA2y + mBvB2y

Substituting the given values and solving for υBx and υBy, we get:

υBx = -2.76 m/s

υBy = -2.53 m/s

Substituting these values in the equation for α, we get: α = -43.3°

Substituting this value in the equation for θ, we get: θ = 55.4°

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1. C. Mass and speed

2. B. Speed

3. B. Speed

4. C. 5.7 * 10^5 J

5. C. 71 km/h

Answer:

The key is that solids hold their shape and they don't flow like a liquid. A rock will always look like a rock unless something happens to it.

Solids can hold their shape because their molecules are tightly packed together.

Explanation:

Yes; it is a solid

Answer:

A. Energy streaming through space toward Thomas

Explanation:

its correct did it on a test

If higher-frequency standing wave in the cavity produces nodal planes with a spacing of 1.25 cm, the distance L between the walls of the cavity is 7.5cm.

The general formula for both ends closed is (n+1) λ/2

Let's say for n, \(\frac{\pi }{2} n = 1.5 = \pi = 3cm\)

for (n+1), λ(n+1)/2 = 1.25 = λ(n+1) = 2.5cm

∴ (n+1) (1.5) = (n+2)(1.25) = n = 4

∴  L = (4+1)(3/2) = L = 7.5cm.  

Electromagnetic waves, or EM waves, are waves produced by oscillations between electric and magnetic fields. In other words, EM waves consist of oscillating magnetic and electric fields. Gamma rays have the highest frequencies in the electromagnetic spectrum.

Most sunrise alarm clocks are yellow to simulate the brightness of the sun. This energizing color is the color your body naturally associates with the morning. Colors like purple and red are often used for simulating the sunset and may be more conducive to falling asleep.

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The water level rise dH= 0.7 x 10⁻⁶cm.

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Answer:

hey I am in class 6 why did you ask

The volume of water needed to fill the outdoor decorative pond in the shape of a hemispherical tank with a radius

r is (2/3)πr³.

The volume of the hemispherical tank can be found by using the formula for the volume of a sphere and dividing it by 2, since a hemisphere is half of a sphere. The formula for the volume of a sphere is

V = (4/3)πr³,

where r is the radius of the sphere.

So, the volume of the hemispherical tank would be

V = (1/2)(4/3)πr³

V = (2/3)πr³.
To fill the tank with water, the volume of water pumped into the tank through the inlet must equal the volume of the tank. So, the volume of water needed to fill the tank is (2/3)πr³.

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Answer:

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

Explanation:

Answer:

A. Wrist

Explanation:

Arteries run closely to the surface of the skin at the wrist and neck making the pulse particularly easy to find at these points.

A discordant igneous intrusion cuts across bedding planes. Here is the detailed explanation of the given question:Explanation:The Discordant igneous intrusion is the formation of an igneous rock mass when magma is injected into a host rock and cools there.

This form of igneous intrusion does not conform to the stratification or layering of the existing rock mass because it cuts across it.Therefore, a discordant igneous intrusion cuts across bedding planes.Option (a) is correct. It is the only option that describes the features of discordant igneous intrusion. Hence, the correct answer is option (a).

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