Question 10 (1 point)
Through which of the following can mechanical waves be transferred the fastest?

The magnetic field strength 0.325 mm beyond a wire carrying 20 A in 12 gauge wire is not provided.

To find the magnetic field strength 0.325 mm beyond the wire's surface, we need to use the formula for the magnetic field of a current-carrying wire.

B = μ₀I/(2πr), where B is the magnetic field strength, μ₀ is the permeability constant, I is the current, and r is the distance from the wire's center.

For 12 gauge wire, the radius is 1.0265 mm. Plugging in the values, we get B = (4π × 10⁻⁷ T·m/A) × 20.0 A/(2π × 1.3515 × 10⁻³ m) ≈ 0.047 T. Therefore, the magnetic field strength 0.325 mm beyond the wire's surface would also be 0.047 T.

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The ratio of the average heat transfer coefficient h to the local heat transfer coefficient h_x is h/h_x = Nu_avg * L / (Nu_x * k) = 2/(m+1) * Re_L^(-1) * (Pr_s/Pr)^n * (L/2)^m.

To obtain an expression for the ratio of the average heat transfer coefficient h to the local heat transfer coefficient h_x, we need to use the definition of the Nusselt number:

Nu_x = h_x * L / k

where L is the length of the plate and k is the thermal conductivity of the fluid. We can rearrange this equation to solve for h_x:

h_x = Nu_x * k / L

Using the expression given in the question, we can substitute for Nu_x:

Nu_x = C * Re_x^m * (Pr / Pr_s)^n

where C, m, and n are constants and Re_x and Pr are the Reynolds and Prandtl numbers at position x, respectively, and Pr_s is the Prandtl number at the surface temperature.

We can then calculate the average Nusselt number, Nu_avg, by integrating the expression for Nu_x over the length of the plate and dividing by L:

Nu_avg = (1/L) * ∫[0,L] Nu_x dx

Substituting for Nu_x and simplifying, we get:

Nu_avg = (C/k) * Re_L^(m+1) * (Pr/Pr_s)^n * (L/2)^(1-m)

where Re_L is the Reynolds number at the end of the plate.

Finally, we can obtain the ratio of the average heat transfer coefficient h to the local heat transfer coefficient h_x by dividing the expression for h_x by the expression for Nu_avg:

h/h_x = Nu_avg * L / (Nu_x * k) = 2/(m+1) * Re_L^(-1) * (Pr_s/Pr)^n * (L/2)^m

Therefore, the ratio of the average heat transfer coefficient h to the local heat transfer coefficient h_x is given by the above expression.

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Answer:

No, because the tornado goes faster than a car at 100 m per hour

Explanation:

Explanation:

Hope it helps my lady.......

For the conduction of electricity, free electrons are required.

Those materials having free electrons conduct electricity.

Metals are usually good conductors of electricity while non-metals are poor conductors of electricity.

Thus, in this way electrical conductivity can be used to distinguish between metals and nonmetals.

A wave that remains in a constant position is referred to as a stationary wave or a standing wave.

It is formed by the superposition of two waves with the same frequency and amplitude traveling in opposite directions. Unlike a traveling wave that moves through space, a standing wave appears to be stationary because the wave peaks and troughs oscillate in place.

The formation of a standing wave occurs when a wave reflects back upon itself, interacting constructively and destructively with the incoming wave. This phenomenon is characterized by the presence of nodes and antinodes. Nodes are points along the wave where the amplitude is always zero, resulting from destructive interference between the two waves. Antinodes, on the other hand, are points of maximum displacement, created by constructive interference..

Standing waves have significant implications in various fields of study. In physics and engineering, they are essential in the analysis of acoustics, optics, and electromagnetic fields. They find applications in musical instruments, where standing waves inside the instrument's resonating body create distinct harmonics and produce specific musical tones.

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Hello,

✔ We have : a = v/Δt

The car's acceleration is therefore 6 m/s².

Answer:

A. The target nucleus split into two nuclei, each with fewer nucleons than the original.

Explanation:

A-P-E-X

Answer:

The target nucleus split into two nuclei, each with fewer nucleons than the original.

Explanation:

Ap3x

Increasing or decreasing the initial temperature of copper will have an impact on the final temperature based on the laws of thermodynamics. The specific effect will depend on the context and the surrounding conditions.

If we consider a scenario where a piece of copper is brought into contact with a cooler object or environment, increasing the initial temperature of the copper will result in a larger temperature difference between the copper and its surroundings. As a consequence, the copper will lose more heat energy to the surroundings, leading to a higher rate of heat transfer. This will cause the final temperature of the copper to decrease more rapidly, approaching the temperature of the surroundings.

Conversely, if the initial temperature of the copper is decreased, the temperature difference between the copper and its surroundings will be smaller. As a result, the rate of heat transfer from the copper to the surroundings will be lower. This will slow down the cooling process, and the final temperature of the copper will be higher than it would be with a higher initial temperature.

It's important to note that these observations assume that the copper is in thermal equilibrium with its surroundings and that no other factors significantly affect the heat transfer process, such as insulation or additional heat sources. The specific conditions and variables involved will ultimately determine the exact impact of changing the initial temperature of the copper on the final temperature.

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Answer:

A) Year

B) Number of Wolves

C) Bar graph

D) Year

Explanation:

A) The year is always definite; it never depends on any other variable. The number of wolves doesn't change the year.

B) The number of wolves depends on variables like food, water, shelter, ect. The number of wolves isn't magical and just change on its own.

C) I think a bar graph will work best best it shows a more visual representation of the number of wolves. A line graph can be confusing with how proportional and scattered the data is, and a scatterplot diagram would be better if you were tracking the number of wolves and another variable, like available food or something like that. With the given data, to me, a bar graph makes the most sense.

D) The independent variable tends to always be what x stands for, and the dependent variable always tends to be what the y stands for. Since the year is our independent variable, and our x is the year, we can name the x axis "Year." Its simple, but it works.

I hope this helps!

Answer:

a) The centripetal acceleration of the car is 0.68 m/s²

b) The force that maintains circular motion is 940.03 N.

c) The minimum coefficient of static friction between the tires and the road is 0.069.

Explanation:

a) The centripetal acceleration of the car can be found using the following equation:

\( a_{c} = \frac{v^{2}}{r} \)

Where:

v: is the velocity of the car = 51.1 km/h

r: is the radius = 2.95x10² m

\( a_{c} = \frac{(51.1 \frac{km}{h}*\frac{1000 m}{1 km}*\frac{1 h}{3600 s})^{2}}{2.95 \cdot 10^{2} m} = 0.68 m/s^{2} \)

Hence, the centripetal acceleration of the car is 0.68 m/s².

b) The force that maintains circular motion is the centripetal force:

\( F_{c} = ma_{c} \)

Where:

m: is the mass of the car

The mass is given by:

\( P = m*g \)

Where P is the weight of the car = 13561 N

\( m = \frac{P}{g} = \frac{13561 N}{9.81 m/s^{2}} = 1382.4 kg \)

Now, the centripetal force is:

\( F_{c} = ma_{c} = 1382.4 kg*0.68 m/s^{2} = 940.03 N \)

Then, the force that maintains circular motion is 940.03 N.

c) Since the centripetal force is equal to the coefficient of static friction, this can be calculated as follows:

\( F_{c} = F_{\mu} \)

\( F_{c} = \mu N = \mu P \)

\( \mu = \frac{F_{c}}{P} = \frac{940.03 N}{13561 N} = 0.069 \)

Therefore, the minimum coefficient of static friction between the tires and the road is 0.069.

I hope it helps you!                

Answer:

Because Star A and Star B have identical luminosities, the difference in their apparent brightness is due solely to distance. Star B is twice as far from Earth as Star A.

Explanation:

Answer: The number of neutrons

Explanation: trust me bro

Some chlorine atoms have an atomic mass of 37, while others have an

the atomic mass of 35.the difference between the two types of chlorine

atom is The number of neutrons, therefore the correct answer is option C

The total number of protons present in an atom is known as the atomic number of that atom. The atomic number has no correlation either with the number of neutrons or the number of electrons present inside an atom.

While the atomic mass of an atom is the sum of the total number of protons and the number of neutrons present inside of any atom.

Since there are chlorine atoms with an atomic mass of 37 and those with an atomic mass of 35. Option C is the appropriate response because the number of neutrons distinguishes between the two varieties of chlorine atoms.

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If you picked it straight up, you lifted it 5 meters.

If you moved it horizontally, it could be ANY distance.

Answer:

5

Explanation:

distance = work / force

d = 35 J / 7 N

d = 5 m

Answer:

6 cm

Explanation:

When 4 cm from the mirror the image is 4 cm behind the mirror.  

When the mirror is moved 1 cm towards the man the man is now 3 cm from the mirror and his image is also 3 cm from the mirror.

Thus the distance between the man and his image is now 3+3 = 6 cm.

Answer:

1.matter made of mass and volume

2.matter is any substance that has mass and takes up a space by having a volume

3.table, coffee, and perfume

4.solid has a strong bonds, liquid has weak bond, and gas no bond

5

Answer:

short circuit

Explanation:

the current will not pass through the lamp, but it will go through the small wire (less resistance than the lamp)

The minimum thickness of the soap-bubble film that results in constructive interference in the reflected light is 225 nm.

To calculate the minimum thickness of a soap-bubble film that results in constructive interference in the reflected light, we can use the equation for the thickness of a soap film:

2t = mλ/n

where t is the thickness of the film, m is the order of the interference (1 for constructive interference), λ is the wavelength of the light, and n is the index of refraction of the film.

Substituting the given values, we get:

2t = (1)(600 nm)/(1.33)

Simplifying the equation, we get:

t = 225 nm

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Answer:

a) humidity

Explanation:

asia is known for miserable humid weather

Answer:

The correct answer is Geological processes.

Explanation:

hope this helps!

The main driving force thought to be behind the slowing of the Gulf Stream is believed to be climate change. As the atmosphere and oceans warm, the Gulf Stream is losing heat to the atmosphere.

The Gulf Stream is a powerful ocean current that originates in the Gulf of Mexico and flows northward along the eastern coast of the United States. It is part of the North Atlantic gyre, a system of circulating ocean currents. The Gulf Stream is an important part of the global conveyor belt, a system that helps regulate the ocean's climate by transporting warm tropical waters to cooler regions of the world. The Gulf Stream is so powerful that it is able to move more water than all of the world's rivers combined. It transports more than 100 million cubic meters of water per second and has a maximum speed of up to 5.6 km per hour.

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Answer:

It is recommended that you exercise within 55 to 85 percent of your maximum heart rate for at least 20 to 30 minutes to get the best results from aerobic exercise. The MHR (roughly calculated as 220 minus your age) is the upper limit of what your cardiovascular system can handle during physical activity.

(I think) ¯\_(ツ)_/¯

Answer:

v=D/t

v=4/0.75

v=5.3km/h

Explanation:

m = 66 kg

a = 2 m/s²

F = .....?

= 66 . 2

= 132 N

Answer:

Conditions under which the belt and pulleys are operating – The friction between the belt and pulley may decrease substantially if the belt happens to be muddy or wet, as it may act as a lubricant between the surfaces.

Explanation:

I hope that this would be helpful

Answer:

the answer would be the first choice!

Explanation:

Answer:

\(\frac{729\frac{m^{2} }{s^{2} } }{83m}\)≈8.8\(\frac{m}{s^{2} }\)

Explanation:

Answer: Speed increases

Explanation:

A streamlined shape reduces the surface area making contact with the fluid (in this case, water).  Less surface area making contact with the fluid means friction is reduced.  The lower the force of friction, the lower the "drag" on the object in motion, hence the faster it can go.  The force of friction is always in the opposite direction of the motion of the object.

Answer:

The mass can be calculated by dividing the net force acting on an object by the acceleration of the object. When talking about net force, we use the units kilogram meter per second squared. This is also known as a Newton. The units for acceleration is meters per seconds squared, and the units for mass are kilograms.

Answer:

\(vd=m\) - volume times density

Explanation:

d = density

v = volume

m = mass

density = mass divided by volume.

multiply both sides by volume to find mass.

Answer: 31N

Explanation:F = m x a

F = 8.5 x 3.7

F = 31.45

F = 31 (rounded)

F = 31 N