An arc flash hazard is defined in Article 100 as a source of possible injury or damage to health associated with the release of energy caused by an electric arc. Informational Note No. 1 indicates that the likelihood of occurrence of an arc flash incident increases when energized electrical conductors or circuit parts are exposed or when they are within equipment in a(n)_________.

(A) The speed of the proton is approximately 5.88 x 10^5 m/s.

(B) The radius of the proton's circular path in the magnetic field is approximately 4.08 x 10^-5 m.

To solve this problem, we can use the principles of conservation of energy and the relationship between magnetic force and centripetal force.

(A) Determine the speed of the proton:

The potential difference (V) accelerates the proton, converting its electric potential energy (qV) into kinetic energy. Therefore, we can equate the change in potential energy to the kinetic energy:

qV = (1/2)mv^2,

where q is the charge of the proton, V is the potential difference, m is the mass of the proton, and v is its speed.

Substituting the given values:

(1.60 x 10^-19 C)(300 V) = (1/2)(1.67 x 10^-27 kg)v^2.

Solving for v:

\(v^2 = (2 * 1.60 x 10^-19 C * 300 V) / (1.67 x 10^-27 kg).\\v^2 = 5.76 x 10^-17 C·V / (1.67 x 10^-27 kg).\\v^2 = 3.45 x 10^10 m^2/s^2.\\v = √(3.45 x 10^10 m^2/s^2).\\v ≈ 5.88 x 10^5 m/s.\)

Therefore, the speed of the proton is approximately 5.88 x 10^5 m/s.

(B) Determine the radius of its circular path in the magnetic field:

The magnetic force acting on a charged particle moving perpendicular to a magnetic field can provide the necessary centripetal force to keep the particle in a circular path. The magnetic force (F) is given by:

F = qvB,

where q is the charge of the proton, v is its velocity, and B is the magnetic field strength.

The centripetal force (Fc) is given by:

Fc = (mv^2) / r,

where m is the mass of the proton, v is its velocity, and r is the radius of the circular path.

Since the magnetic force provides the centripetal force, we can equate the two:

qvB = (mv^2) / r.

Simplifying and solving for r:

r = (mv) / (qB).

Substituting the given values:

\(r = ((1.67 x 10^-27 kg)(5.88 x 10^5 m/s)) / ((1.60 x 10^-19 C)(150 mT)).\\r = (9.8 x 10^-22 kg·m/s) / (2.40 x 10^-17 T).\\r = 4.08 x 10^-5 m.\)

Therefore, the radius of the proton's circular path in the magnetic field is approximately 4.08 x 10^-5 m.

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The Hawthorne studies contributed to the understanding of human behavior in the workplace and emphasized the importance of considering social and psychological factors in organizational settings. However, they were not specifically focused on lighting experiments and did not provide the momentum for them.

The Hawthorne studies were a series of experiments conducted at the Western Electric Hawthorne Works in Chicago from 1924 to 1932. These studies aimed to examine the relationship between workplace conditions and productivity.

While the Hawthorne studies made significant contributions to the field of industrial and organizational psychology, they were not specifically focused on lighting experiments. Instead, the studies investigated various factors such as lighting, rest breaks, work hours, and employee involvement in decision-making, among others.

The Hawthorne studies are known for their unexpected findings related to the "Hawthorne Effect," which refers to the phenomenon where individuals modify their behavior in response to being observed or participating in an experiment. The studies demonstrated that social and psychological factors, such as employee satisfaction, group dynamics, and management attitudes, had a significant impact on productivity and workplace outcomes.

Overall, the Hawthorne studies contributed to the understanding of human behavior in the workplace and emphasized the importance of considering social and psychological factors in organizational settings. However, they were not specifically focused on lighting experiments and did not provide the momentum for them.

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Answer:1.15

Explanation:

Answer:

C. 1.15

Explanation:

We can calculate the gamma factor for an object moving at 0.5c, using the formula:  

γ = 1/√(1 - v^2/c^2)

--------

where v is the velocity of the object and c is the speed of light.

Substituting v = 0.5c, we get:

γ = 1/√(1 - 0.5^2) = 1/√(1 - 0.25) = 1/√0.75 ≈ 1.155

--------

Therefore, the gamma factor for an object moving at 0.5c is approximately 1.155.

Answer:

Carbon Dioxide

Explanation:

Carbon dioxide is produced when you mix baking soda and vinegar.

Answer:

-201

Explanation:

Got it right on Acellus

Answer:

-201

Explanation:

acellus

Answer:

18.15m

Explanation:

Speed * Time = Distance

5.5 * 3.3 = 18.15m

The distance traveled by Robin is equal to 18.15 m with an average speed of 5.5 m/s for 3.3s.

The average speed can be explained as the total distance covered by the object in a definite time. The average speed can be considered a scalar quantity as it exhibits magnitude and no direction.

The average speed of a physical system can be determined from the ratio of the total distance traveled by the system to the time taken to cover that distance.

The average speed equation of a physical system can be written as follows:

Average speed =  Total distance/total time taken

Given, the average speed of the Roin, = 5.5 m/s

The time is taken by Robin for jogging = 3.3 s

The average speed of the Robin can be determined as:

Average spped = Distance/ time

5.5 = Distance/3.3

Distance traveled by Robin = 5.5 × 3.3 = 18.15 m

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They feel they are, overall, bad people without any particular skills or value, when they are not.

I hope this helps you

God bless and have an awesome weekend

:)

Explanation:

ANSWER

g

m

=

R

2

GM

1.4=

R

2

(6.667×10

−11

)(7.34×10

22

)

R=

1.4

6.667×10

−11

(7.34×10

22

)

=

34.95×10

11

=1.87×10

6

m

HOPE IT'S HELP AND PLZ FOLLOW ME

Explanation:

The gravitational force exerted on an object by another is equal to that which the other exerts on it.

F=GMm/r²

G=6.67x10-¹¹Nm²/Kg²

r= 80cm=0.8m

F= [6.67x10-¹¹ x 70 x 55]/0.8²

F= 4 x 10^-7N.

Answer:

Option A. 1.1×10¯²⁴ N

Explanation:

The following data were obtained from the question:

Charge 1 (q1) = - 4e

Charge 2 (q2) = + 3e

Distance apart (r) = 0.05 m

Electric field constant (K) = 9×10⁹ N•m²/C²

Electron (e) = 1.6×10¯¹⁹ C.

Electric Force (F) =..?

Next, we shall determine the value of the two charges.

This is illustrated below:

Charge 1 (q1) = - 4e

Charge 1 (- q1) = 4e

Electron (e) = 1.6×10¯¹⁹ C.

Charge 1 (- q1) = 4 × 1.6×10¯¹⁹ C.

Charge 1 (- q1) = 6.4×10¯¹⁹ C.

Charge 2 (q2) = + 3e

Electron (e) = 1.6×10¯¹⁹ C.

Charge 2 (q2) = 3 × 1.6×10¯¹⁹ C.

Charge 2 (q2) = 4.8×10¯¹⁹ C.

Finally, we shall determine the value of the electric force. This can be obtained as shown below:

Charge 1 (- q1) = 6.4×10¯¹⁹ C.

Charge 2 (q2) = 4.8×10¯¹⁹ C.

Electric field constant (K) = 9×10⁹ N•m²/C².

Distance apart (r) = 0.05 m

Electric Force (F) =..?

F = Kq1q2 /r²

F = (9×10⁹× 6.4×10¯¹⁹× 4.8×10¯¹⁹)/(0.05)²

F = 1.1×10¯²⁴ N

Therefore, the electric force between the two point charge is 1.1×10¯²⁴ N

Brake fading refers to the loss of braking power due to overheating of the brake system components. To prevent brake fading, it is important to employ proper braking techniques, maintain the braking system, and avoid excessive or prolonged braking.

Brake fading occurs when the excessive heat generated during braking causes a decrease in the friction between the brake pads and the rotors or drums. This can result in a loss of braking efficiency and longer stopping distances.

1. Proper braking techniques: Use proper braking techniques to minimize heat buildup. Avoid excessive and prolonged braking, especially when descending steep hills. Instead, utilize engine braking by downshifting to lower gears to help slow down the vehicle.

2. Anticipate braking situations: Anticipate and plan your braking in advance to avoid sudden and hard braking. Maintaining a safe following distance and being aware of the road conditions can help reduce the need for sudden stops.

3. Avoid overloading: Do not exceed the recommended load capacity of your vehicle. Overloading can strain the braking system and lead to increased heat generation.

4. Brake maintenance: Regularly inspect and maintain your vehicle's braking system. This includes checking the brake pads, rotors, drums, and brake fluid levels. Replace worn-out brake pads and have the braking system serviced as per the manufacturer's recommendations.

5. Cool-down periods: If you notice signs of brake fading, such as a spongy brake pedal or reduced braking effectiveness, find a safe place to pull over and allow the brakes to cool down. This can help prevent further overheating and potential brake failure.

By following these steps and practicing proper braking techniques, you can help prevent brake fading and ensure the optimal performance and safety of your vehicle's braking system.

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Answer:

turtle

Explanation:

Answer:

b

Explanation:

Answer:

b

Explanation:

trust

=> Flexibility is the ability of a joint or series of joints to move through an unrestricted, pain free range of motion.

Facilitated diffusion is a type of transport through a membrane protein channel. A substance moves across the membrane with the help of the channel; however, it moves from high to low concentration (down the concentration gradient) without any energy input. Facilitated diffusion can be described thermodynamically and kinetically.

According to thermodynamics, any chemical or physical process must follow the laws of thermodynamics. For facilitated diffusion, it must follow the second law of thermodynamics. The second law states that the entropy of the system will increase spontaneously. In facilitated diffusion, a substance moves from high to low concentration (down the concentration gradient). This movement follows the law of entropy. Hence, facilitated diffusion follows thermodynamics.

Kinetics refers to the study of the rate and speed of the reaction. In facilitated diffusion, the movement of the substance across the membrane depends on the concentration gradient. Hence, the rate of movement of the substance across the membrane is directly proportional to the concentration gradient. Moreover, the rate of movement of the substance across the membrane also depends on the number of channels available for transport. As the number of channels increases, the rate of transport also increases. Therefore, facilitated diffusion follows kinetics.

In summary, facilitated diffusion can be described thermodynamically and kinetically. It follows the second law of thermodynamics and the rate of transport is directly proportional to the concentration gradient and number of channels available.

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Answer:

m = 3 kg

Explanation:

It is given that,

Initial speed of a ball is 5 m/s, u = 5 m/s

Final speed of a ball is 4 m/s, v = 4 m/s (as it bounces)

Impulse provided by the wall is -3 N-m (impulse is provided in opposite direction)

We need to find the mass of the ball. Impulse provided to an object is given by the change in its momentum as :

J = m(v-u)

m is mass of the ball

\(m=\dfrac{J}{(v-u)}\\\\m=\dfrac{-3}{(4-5)} \\\\m=3\ kg\)

So, the mass of the ball is 3 kg.

Answer:

Matter, Force

Explanation:

In scientific contexts, mass is the amount of "matter" in an object (though "matter" may be difficult to define) whereas weight is the force exerted on an object by gravity. Objects on the surface of the Earth have weight, although sometimes the weight is difficult to measure.

0.254 g x (1 g/ml) = 0.254 ml

Answer:

it is chemical energy

Explanation:

that is the energy used by our body, so it is the one that we will loose. and the energy that we gain is also chemical energy

Answer:

Mid-ocean ridges around the globe are linked by plate tectonic boundaries and the trace of the ridges across the ocean floor appears similar to the seam of a baseball.

Explanation:

Answer:

False

Explanation:

Because It is the product of Mass and velocity

Moving from the element with atomic number 10 to atomic number 11 on the periodic table changes observed are :

Reactivity increases,

Sodium has more shell,

Valence electrons in sodium are farther from the nucleus,

Atomic number 11 does not have a full electron shell

In increasing order of atomic number, the elements are listed. The amount of protons in an atom's nucleus is indicated by its atomic number. An element's identity is determined by its proton count. The number of protons determines an element's identity.

The indirect relativistic effect amplifies the decreases in the binding energies of the valence d and f electrons as they move down the periodic table. As a result, the d electrons in the heavier coinage metals become more chemically active, leading to higher oxidation states in these elements.

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Answer:

40,000 m/s²

Explanation:

The formula is given as Force = mass × acceleration, so then acceleration = Force / mass.

Therefore...

5800 N ÷ 0.145 kg = 40,000 m/s²

When the plate separation of a charged parallel plate capacitor is increased, the potential difference between the plates decreases.

In a parallel plate capacitor, the potential difference (V) between the plates is directly proportional to the electric field (E) between the plates and the plate separation (d). Mathematically, V = Ed. Therefore, if the plate separation is increased to 4d, the electric field between the plates decreases by a factor of 1/4. Since the potential difference is directly proportional to the electric field, it also decreases by the same factor of 1/4. In other words, the potential difference decreases by 75% (or 3/4) when the plate separation is increased to 4d.

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The time it will take for a 3250-watt motor to lift a 425-kg piano to a sixth-story window 15.0 meters above is 19.32 seconds.

To calculate the time it will take for a 3250-watt motor to lift a 425-kg piano to a sixth-story window 15.0 meters above, we need to use the formula:

Time = Work / Power

where work is the force applied times the distance covered, and power is the rate at which work is done.

First, we need to calculate the work done in lifting the piano:

Work = force × distance

= mass × gravity × distance

= 425 kg × 9.81 m/s² × 15.0 m

= 62,760 J

where gravity is approximately 9.81 m/s².

Next, we can calculate the time using the formula:

Time = Work / Power

= 62,760 J / 3250 W

= 19.32 seconds

Therefore, it will take approximately 19.32 seconds for a 3250-watt motor to lift a 425-kg piano to a sixth-story window 15.0 meters above.

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Answer:

(a) The distance-time graph for an object with uniform speed is giving by a straight line sloped graph with a constant positive or negative gradient as shown in the attached diagram

(b) The distance-time graph for an object with non-uniform speed is giving by a curved line sloped graph with varying gradient as shown in the attached diagram

(c) The velocity-time graph for a car with uniform motion is giving by a horizontal line graph at the speed of constant motion with a zero gradient as shown in the attached diagram

(d) The velocity-time graph for a car moving with uniform acceleration is giving by a straight line sloped graph with a constant positive or negative gradient as shown in the attached diagram

(e) The velocity-time graph for a car moving with non-uniform acceleration is giving by a curved line sloped graph with varying gradient as shown in the attached diagram

(f) According to Newton's first law of motion, an object at rest will remain at rest with no motion unless acted by a force, an therefore, will have no motion with time

Explanation:

Answer:

Count the number of hydrogen and oxygen atoms on each side of the arrow.

Explanation:

The spring stiffness, or spring constant, of the given perfect spring is approximately 137.9623 N/m. This means that for every meter of extension, the spring will exert a force of 137.9623 N.

This value was obtained by applying Hooke's Law and calculating the ratio of the change in force to the change in extension using two data points from the table.

To determine the spring stiffness, we need to calculate the spring constant (k) using Hooke's Law, which states that the force applied on a spring is directly proportional to the extension it undergoes.

Hooke's Law can be represented as F = kx, where F is the applied force and x is the extension of the spring.

In the given table, we have the applied forces (F) and corresponding extensions (x). We can use any two data points from the table to find the spring constant.

Let's choose the first and last data points from the table:

(x1, F1) = (0.43 m, 59.34 N) and (x2, F2) = (0.96 m, 132.48 N).

Using Hooke's Law, we can calculate the spring constant (k) as follows:

k = (F2 - F1) / (x2 - x1)
  = (132.48 N - 59.34 N) / (0.96 m - 0.43 m)
  = 73.14 N / 0.53 m
  ≈ 137.9623 N/m (rounded to 4 decimal places)

Therefore, the spring stiffness, or spring constant, is approximately 137.9623 N/m.

Hooke's Law is a fundamental concept in physics that describes the relationship between the force applied on a spring and the resulting extension it undergoes.

The formula F = kx represents this relationship, where F is the applied force, k is the spring constant, and x is the extension of the spring.

By using two data points from the table, we can calculate the spring constant by finding the ratio of the change in force to the change in extension.

This calculation allows us to quantify the stiffness of the spring.
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0.67 m/s². We may use Newton's second equation of motion to calculate the acceleration of the tug-of-war game, which states that the net force on an item is equal to its mass times its acceleration.

there is a tug-of-war game going on. there are 5 people on each team with an average mass of 60 kg. net force Equals mass multiplied by acceleration To solve for acceleration, we may rearrange this equation: acceleration = net force divided by mass The net force is 400 N to the right in this scenario, and the mass is the total mass of both teams, which is: 5 individuals per squad x 60 kg per person x 2 teams = 600 kg When we plug these values into the equation,

we get: 400 N / 600 kg = 0.67 m/s² acceleration As a result, the tug-of-war game accelerates to the right at 0.67 m/s².

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