an airplane is flying at a standard altitude of 5 km. a pitot tube mounted at the nose measures a pressure of 0.957 bar. assume the airplane is flying at high subsonic speed and flow is compressible. calculate the velocity of airplane.

Answer:

your mom

Explanation:

Answer:

1.Copper electrical wires are safer to use than wires made of most other conductive metals because they are resistant to heat. As you can see, copper is the preferred metal for electrical wires for several reasons. It has high electrical conductive; it's inexpensive; it's ductile; and it's thermal resistant.

2.Tungsten is used for making filament of an electric bulb due to the following reasons: Being an alloy it has a very high melting point. It has very high resistivity so it does not burn easily at room temperature. The lamp glows at high temperatures.

3.Confused about choosing between CFL bulbs vs. LED bulbs? Since 2014, government regulations have been pushing consumers to replace familiar incandescent light bulbs with more energy-efficient compact fluorescent lamp (CFL) and light-emitting diode (LED) bulbs.Advances in both CFL and LED technologies have expanded consumer choice — yet make evaluating your options a little more complex. Knowing how different kinds of light bulbs stack up against each other will help you not only get the right lighting for any given space but also save energy in the process.

A high-energy transition state of hydrogen abstraction by chlorine leads to a more exothermic reaction compared to bromine.

An exothermic reaction is a reaction in which energy is released in the form of light or heat. Thus in an exothermic reaction, energy is transferred into the surroundings rather than taking energy from the surroundings as in an endothermic reaction.

A higher energy transition state of hydrogen abstraction by chlorine leads to a faster reaction compared to bromine.

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A higher energy transition state of hydrogen abstraction by chlorine leads to a slower reaction compared to bromine.

Explanation:

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Answer:

Because of the interstellar dust and interior location of the solar system.

Explanation:

We will probably not be able to detect the neutral hydrogen that gives rise to the 21-cm radio signal if we point a large optical telescope to the region because, the interstellar dust obscures the location of the spiral arm of the Milky way galaxy and this makes neutral hydrogen that gives rise to the 21-cm radio signal difficult to detect.

Also, the interior location of the solar system also makes the neutral hydrogen that gives rise to the 21-cm radio signal difficult to detect.

So, the interstellar dust and the interior location of the solar system makes it difficult to detect the neutral hydrogen that gives rise to the 21-cm radio signal with a large optical telescope.

The index of refraction of air, which is approximately 1.000: n_(2) = (1.000 × sin(45.0°)) / sin(17.0°). This expression will give us the index of refraction of the diamond.

To calculate the index of refraction of the diamond, we can use Snell's law, which relates the angles of incidence and refraction to the indices of refraction of the two media involved. Snell's law can be expressed as follows:

n1 × sin(θ_(1)) = n2 × sin(θ_(2))

where:

n_(1) is the index of refraction of the initial medium (in this case, air),

θ_(1) is the angle of incidence,

n_(2) is the index of refraction of the second medium (in this case, diamond),

θ_(2) is the angle of refraction.

We can rearrange the equation to solve for the index of refraction of the diamond, n_(2):

n_(2) = (n_(1) × sin(θ_(1))) / sin(θ_(2))

Given that the angle of incidence θ_(1) is 45.0° and the angle of refraction θ_(2) is 17.0°, we can substitute these values into the equation along with the index of refraction of air, which is approximately 1.000:

n_(2) = (1.000 × sin(45.0°)) / sin(17.0°)

This expression will give us the index of refraction of the diamond.

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Answer:

Newton believed that mass tells gravity how much force to exert. Einstein believed that mass tells space-time how to curve.

Explanation:

Isaac Newton believed that bodies on earth had a force of gravity pulling them down as a result of their masses.

Albert Einstein believed that the bodies were not pulled down but were moving around in a circular sphere/manner.

This confirms Newton believing that mass tells gravity how much force to exert and Einstein believing that mass tells space-time how to curve.

Answer:

first one is for the assignment second is for the quiz

Explanation:

Assignment - C.

Quiz - D.

Given values are:

As we know the formula,

→ \(\Sigma f = ma\)

or,

→ \(\Sigma f = \frac{mv^2}{r}\)

By putting the values, we get

         \(= \frac{52\times 8^2}{1.6}\)

         \(= \frac{52\times 64}{1.6}\)

         \(= 2080 \ N\)

Thus the response above is appropriate.

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This is due to the fact that occluded fronts combine two cold air masses, which causes one of the cold air masses to go downward.

When a warm air mass is sandwiched between two cold air masses, an occluded front occurs. In an occlusion, the warm front passes over the cold front, which dives beneath it.

In a front is obscured, the warm front is fully supplanted by the cold front, in which the warm air masses have completely disappeared. Furthermore, there are frequent shifts in the various weather producing circumstances because of the cold front's relatively low temperature.

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The constant force acting on a volleyball to accelerate it to a speed of 60 m/s for 5 seconds is 75 N. The acceleration of an object is given by the following formula: a = F/m Where, a is acceleration, F is force, and m is mass.

The force required to accelerate an object is given by: F = ma

We can use the above two formulas to find the constant force acting on a volleyball with a mass of 0.25 kg, which is accelerated to a speed of 60 m/s for 5 seconds.

F = maF

= (0.25 kg) x (60 m/s ÷ 5 s)F

= (0.25 kg) x (12 m/s²)F

= 3 N x 25F

= 75 N

Therefore, the constant force acting on the volleyball is 75 N.

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The momentum carried by a length l of the beam can be calculated using the formula momentum = P × (l / c).

To find the momentum carried by a length l of the beam, we need to consider the properties of the laser beam. The beam has a circular cross section with a radius r and a power P.

The momentum of the beam can be calculated using the formula: momentum = power × time. In this case, we need to find the momentum carried by a length l of the beam.

Assuming that the beam is uniform along its length, we can calculate the momentum by multiplying the power P by the time it takes for the beam to traverse the length l.

Since the speed of light in a vacuum is constant, the time it takes for the beam to traverse the length l is equal to l divided by the speed of light.

Therefore, the momentum carried by a length l of the beam is given by the formula: momentum = P × (l / c), where c is the speed of light.

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When a ferromagnetic material is placed in an electromagnetic coil and a magnetic field is applied, the magnetic induction (B) is increased.

Therefore, the correct answer is:

(a) There is a large increase in the magnetic induction (B)

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Answer:

B

Explanation:

With 4.3 m/s velocity, is the cheetah running.

velocity= distance/time

distance=27.6 m

time=6.3 s

velocity=27.6 m/6.3 s

velocity=4.3 m/s

A vector number known as velocity describes "the pace at which an item changes its location." Imagine a person moving quickly, taking one stride ahead, one step back, and then beginning from the same place each time. A vector quantity is velocity. As a result, velocity is aware of direction. One must consider direction while calculating an object's velocity. Saying that an item has a velocity of 55 miles per hour is insufficient. The direction must be included in order to adequately characterize the object's velocity. Simply said, the velocity vector's direction corresponds to the motion of an item.

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An endless spring A block with mass m is connected to a constant k. The block undergoes a displacement x as a result of the spring. then, by using\((K+U)_{i} =(K+U) _{f}\), we can  determine how much effort the spring performs on the block

It is used to determine a spring's stability or instability and, as a result, what system it should be used in. It reworks Hooke's Law and is mathematically expressed as k = - F/x.

where k is the spring constant, F is the force applied over x, and x is the displacement generated by the spring in N/m. Fs = -kx, where F is the spring's restoring force, k is the spring constant, and x is the displacement, is the formula utilized by the Hooke's Law Calculator.

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Answer:

s = 50.4 m

Hence, the point C is 50.4 m towards east from point B

Explanation:

Since, the motorcyclist travels at a constant speed in straight line towards east after point B. Therefore, we can use the following equation in this case:

s = vt

where,

s = distance covered = position of point C = ?

v = uniform speed of motorcyclist = 18 m/s

t = time interval = 2.8 s

Therefore,

s = (18 m/s)(2.8 s)

s = 50.4 m

Hence, the point C is 50.4 m towards east from point B

Answer:

μ=1/5=0.2

Explanation:

using the formula

Fs=Fn*μ

Where

Fs is the static force

Fn = Normal force

μ= coefficient

so if Fn=25n

and it requires 5 n to start moving, means the max Fs is 5n

5=25μ

μ=5/25

μ=1/5=0.2

Sure! Here are the steps for calculating the velocity and distance traveled by the car after 50 seconds :

Step 1: Calculate the velocity using the equation:

\(v = u + at\)

where:

- \(v\) is the final velocity

- \(u\) is the initial velocity (0 m/s, as the car starts from rest)

- \(a\) is the acceleration (3 m/s²)

- \(t\) is the time (50 seconds)

Substituting the values into the equation:

\(v = 0 + (3 \, \text{m/s²}) \times (50 \, \text{s})\)

Step 2: Calculate the distance traveled using the equation:

\(s = ut + \frac{1}{2}at^2\)

where:

- \(s\) is the distance traveled

- \(u\) is the initial velocity (0 m/s)

- \(a\) is the acceleration (3 m/s²)

- \(t\) is the time (50 seconds)

Substituting the values into the equation:

\(s = 0 \times (50 \, \text{s}) + \frac{1}{2} \times (3 \, \text{m/s²}) \times (50 \, \text{s})^2\)

Now, let's simplify these equations:

\(v = 3 \times 50\)

\(s = \frac{1}{2} \times 3 \times 50^2\)

Calculating the results:

\(v = 150\) m/s

\(s = 3750\) meters

Therefore, after 50 seconds, the car will have a velocity of 150 m/s and would have traveled a distance of 3750 meters.

Answer:

4.6

Explanation:

If a dog running with an initial speed of 7.5 m/s comes to a stop in 5 seconds, then the displacement of the dog would be 37.5 m / s .

An object's position changes if it moves in relation to a reference frame, such as when a passenger moves to the back of an airplane or a professor moves to the right in relation to a whiteboard. Displacement describes this shift in location.

As given in the problem If a dog running with an initial speed of 7.5 m/s comes to a stop in 5 seconds, then we have to find the displacement of the dog.

The displacement of the dog = 7.5 × 5

                                                = 37.5 m /s

Thus , If a dog running with an initial speed of 7.5 m/s comes to a stop in 5 seconds, then the displacement of the dog would be 37.5 m / s .

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By applying Gauss's Law and using the appropriate Gaussian surface for each point, you can find the strength and direction of the electric field at points 4 cm, 8 cm, and 12 cm from the center of the hollow metal sphere.

Gauss's Law states that the electric field through a closed surface is proportional to the total charge enclosed by the surface.

In this case, we have a hollow metal sphere with different surface charge densities on the inside and outside surfaces. To find the electric field at the specified points, we need to consider the contributions from both the inner and outer surface charges.

To calculate the electric field at a point outside the sphere, such as 4 cm, 8 cm, or 12 cm from the center, we can consider a Gaussian surface in the form of a sphere centered at the center of the hollow metal sphere. The radius of this Gaussian surface should be larger than the outer radius of the metal sphere.

Since the charge on the inner surface of the hollow sphere is negative (-100 nC/m^2), it will create an electric field directed towards the inside of the sphere. On the other hand, the charge on the outer surface of the sphere is positive (100 nC/m^2), creating an electric field directed away from the sphere.

To determine the electric field at a point outside the sphere, we only need to consider the contribution from the outer surface charge, as the inner surface charge is shielded by the metal.

Let's calculate the electric field at the specified points using Gauss's Law:

1. At 4 cm from the center:
  The electric field due to the outer surface charge will be radially outward.
  To calculate the electric field at this point, we can consider a Gaussian surface of radius 4 cm centered at the center of the hollow sphere.
  The electric field at this point can be calculated using the formula:
  Electric field = (Surface charge density * Gaussian surface area) / (ε0),
  where ε0 is the vacuum permittivity.

2. At 8 cm from the center:
  The electric field due to the outer surface charge will also be radially outward.
  To calculate the electric field at this point, we can consider a Gaussian surface of radius 8 cm centered at the center of the hollow sphere.
  The electric field at this point can be calculated using the same formula mentioned above.

3. At 12 cm from the center:
  The electric field due to the outer surface charge will still be radially outward.
  To calculate the electric field at this point, we can consider a Gaussian surface of radius 12 cm centered at the center of the hollow sphere.
  Again, we can use the same formula to calculate the electric field.

By applying Gauss's Law and using the appropriate Gaussian surface for each point, you can find the strength and direction of the electric field at points 4 cm, 8 cm, and 12 cm from the center of the hollow metal sphere.

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A gravity anomaly refers to a variation in the strength of gravitational acceleration at a specific location on Earth's surface. These anomalies can be caused by differences in the density distribution of subsurface materials. When a dense sphere is buried at different depths, the gravity anomaly it produces changes in magnitude and spatial extent.

A gravity anomaly occurs when there are variations in the gravitational field strength at different points on Earth's surface. The standard value for gravitational acceleration is approximately 9.8 meters per second squared (m/s²). However, due to variations in the distribution of subsurface materials, the actual gravitational acceleration can deviate from this standard value, resulting in gravity anomalies.

Gravity anomalies are caused by differences in the density of subsurface materials. The gravitational force experienced by an object is directly proportional to the mass of the object. Therefore, regions with higher densities have a greater gravitational attraction, leading to a positive gravity anomaly. Conversely, regions with lower densities exhibit a weaker gravitational pull, resulting in a negative gravity anomaly.

When a dense sphere is buried at different depths, the gravity anomaly it produces changes in several ways. Firstly, as the sphere is buried deeper, the gravitational effect of its mass is distributed over a larger area, leading to a decrease in the magnitude of the gravity anomaly. Secondly, the spatial extent of the anomaly decreases as the sphere moves deeper underground since its influence is more localized. Therefore, the gravity anomaly of a buried dense sphere diminishes in magnitude and becomes more confined as the depth of burial increases.

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Answer:

B: a 50-g fish swimming in a fish tank.

Explanation:

I chooses B because kinetic energy is energy present in moving bodies or objects. And the fish swimming has kinetic energy because it is moving

Answer:

I think it's c but don't quote me on it

The acceleration of the object is 5 m/s². The result is obtained by using the Newton's second law.

The Newton's second law states that "The acceleration is directly proportional to the net force acting on an object and inversely proportional to the object's mass." It can be expressed as

a = ∑F/m

Where

An object with a mass of 12 kg is acted upon by a force of 60 N.

Find the acceleration of the object!

Using the Newton's second law formula, we get acceleration.

a = ∑F/m

a = 60/12

a = 5 m/s²

Hence, the acceleration of the object is 5 m/s².

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Answer: The  Answer Is A

Explanation:

formula

v = fλ

v = velocity

f=frequency

λ = wavelength

Speed (meters/second) = Wavelength (meters) x Wave Frequency (hertz) (1/seconds)

343 meters/second = x meters times 264 hertz (1 /second)

x (wavelength) = 343/264 = 343 ÷ 264 =

1.29924242 meters

1.3 meters = wavelength = answer

https://www.scienceworld.ca/resource/sound-vibration-vibration-vibration

Hertz (1 Hz = 1 vibration per second)

The number of vibrations per second is known as the frequency, measured in Hertz (1 Hz = 1 vibration per second).

These vibrations enter the outer ear and cause the eardrum to vibrate too

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Answer:

180 [J].

Explanation:

1) the required work [W] can be calculated as difference of the energy: W=E₂-E₁, where E₁=mgh₁ - the energy before lifting, E₂=mgh₂ - the energy after lifting;

2) W=mgh₂-mgh₁, where m - mass; g=10 [N/kg], h - height;

3) then the required work [W]:

W=mg*(h₂-h₁)=30*6=180 [J].

Answer:

infiltration decreases and runoff increase

Explanation:

The changes in surface water movement which is likely to occur when vegetation is removed from the side of a hill is infiltration decreases and runoff increases.

Surface overflow is the flow of water which take place on the surface of the ground. The extra water due to rain or flood arises on the ground or at the surface, flows in the nearby lacks or ponds.

Now if the vegetation is removed, great amount of water started to come from the hills. The result of it, more water started to overflow on the land of the surface. This way the runoff increases.

Infiltration is the way by which the ground level water enters into the soil of the earth.

Now, if the vegetation is removed, a lot of amounts of water started to come from the hills. This excess amount of water does not enter in to the soil of the earth.

The changes in surface water movement which is likely to occur when vegetation is removed from the side of a hill is infiltration decreases and runoff increases.

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The product of the magnitudes of the charges and the square of the distance between them determines the magnitude of the electrostatic force F between two point charges, q1 and q2, and vice versa.

The magnetic field B and the charge q's velocity v are both perpendicular to the force. F = qvB sin, where is the angle of 180 degrees between the velocity and magnetic field, gives the force's magnitude.

The product of the magnitudes of the charges and the square of the distance between them determines the magnitude of the electrostatic force F between two point charges, q1 and q2, and vice versa.

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Answer:

B or D

Explanation:

I wanna say B but I don't really know if it's a trick question

my explanation for D is that anvils are usually 110 decibles and ear drums usually are damaged when exposed to 82dbs or higher at a consistant rate so I'd imagine that'd be the answer I hoped this helped

Answer:

the answer is B

Explanation:

Any harmful noises can be bad. yes, an Anvil and Hammer can be bad but so can explosions and gun fire and having music to loud

Answer:

A sound wave is the pattern of disturbance caused by the movement of energy traveling through a medium such as air, water, or any other liquid or solid matter, as it propagates away from the source of the sound. The source is some object that causes a vibration, such as a ringing telephone, or a person's vocal chords.

Explanation: