True Or False weather conditions in the atmosphere can be recognized through direct observation.

In a generator, the series field shunt rheostat allows part of the current that normally flows through the series field to flow through the resistor.

The field rheostat is in series connected with the shunt field circuit. This provides the simplest method of controlling the terminal voltage of a dc generator.

Shunt motor is a particular kind of DC motor which runs at a constant speed. But using field and armature rheostat control method we can make it more versatile. Field rheostat provides above normal speed and armature rheostat provides wide range of below normal speed.

An ammeter and a rheostat are connected in series and a voltmeter is connected in parallel with battery.

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Answer:

A solar powered spacecraft could not operate in the umbral shadow but could operate in penumbral shadow.

The interaction with the highest electrostatic potential energy is the +2 and -2 particle separated by a distance of 5 nm. This is because the electrostatic potential energy between two charged particles is directly proportional to the product of the charges and inversely proportional to the distance between them. In this case, the product of the charges (+2 and -2) is 4, which is higher than any other combination given in the options. Additionally, the distance between them (5 nm) is smaller than any other option, further increasing the electrostatic potential energy.

The correct answer is Option B. The statement "they have the same A-number but different Z-number" is true .

Atoms of the same element only differ because one of the atoms has more electrons, making it an ion.

This difference does not affect the mass of the atom, which is determined by the sum of its protons and neutrons, represented by the atomic mass or A-number.

The number of protons in an atom is called the atomic number or Z-number.

The Z-number of an element is unique to it. All the atoms of a given element have the same number of protons.

Thus, for example, all carbon atoms have six protons, making the Z-number of carbon 6.

However, different isotopes of an element can have different numbers of neutrons.

This means that they have a different atomic mass or A-number.

Therefore, they have the same A-number but different Z-number.

Therefore the correct Option is B.

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Explanation:

you add the from head to tail. Head is the triangle and tail is the final point of the vector

Answer:

d

Explanation:

there is not enough information about the liquid to know the force required for each. ie. stirring a cup of water is different than stirring a cup of pudding.

Answer:

13/23 ydfffgggggggffttf

Answer:

Define the capacitance of a parallel pate capacitor and state one application of in the electric circuit

The hiker travelled 4.02 km North/South and 4.74 km East/West during her hike.

This question involves vector addition, the resolution of vectors, the use of bearings, and trigonometry in the calculation of the hiker's movement.

This may appear to be a difficult problem, but with some visual aid and the proper use of mathematical formulas, the issue can be addressed correctly.

Resolution of VectorThe resolution of a vector is the process of dividing it into two or more components.

The angle between the resultant and the given vector is equal to the inverse tangent of the two rectangular components.

Angles will always be expressed in degrees in the solution.

The sine, cosine, and tangent functions in trigonometry are denoted by sin, cos, and tan.

The tangent function can be calculated using the sine and cosine functions as tan x = sin x/cos x. Also, in right-angled triangles, Pythagoras’ theorem is used to find the hypotenuse or one of the legs.

Distance Travelled North/SouthThe hiker traveled North for the first part of the hike and South for the second.

The angles that the hiker traveled in the first part and second parts are 53 degrees and 17 degrees, respectively.

The angle between the two is (180 - 53 - 17) = 110 degrees.

The angle between the resultant and the Northern direction is 110 - 53 = 57 degrees.

Using sine and cosine, we can calculate the north/south distance traveled to be 5 sin 57 = 4.02 km, and the east/west distance to be 5 cos 57 = 2.93 km.

Distance Travelled East/WestThe hiker walked East for the second part of the hike.

To calculate the distance travelled East/West, we must first calculate the component of the first part that was East/West.

The angle between the vector and the Eastern direction is 90 - 53 = 37 degrees.

Using sine and cosine, we can calculate that the distance travelled East/West for the first part of the hike is 5 cos 37 = 3.88 km.

To determine the net distance travelled East/West, we must combine this component with the distance travelled East/West in the second part of the hike.

The angle between the second vector and the Eastern direction is 17 degrees.

Using sine and cosine, we can calculate the distance traveled East/West to be 3 sin 17 = 0.86 km.

The net distance traveled East/West is 3.88 + 0.86 = 4.74 km.

Therefore, the hiker travelled 4.02 km North/South and 4.74 km East/West during her hike.

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Explanation:

Here is the first one....you should try the second one...

The one that is accurate is that when the phosphate is broken down into ADP, ATP releases energy.

The energy that cells need is produced through the breakdown of glucose. More energy cannot be stored by ATP molecules than is released by the cells. In actuality, ATP doesn't retain as much energy as a glucose molecule. See the equation in the question; roughly 38 ATP molecules are produced for every glucose molecule.

The cell stores extra energy by reattaching a free phosphate molecule to ADP, converting it back into ATP. This extra energy can come from the breakdown of food that has been ingested or, in the case of plants, energy produced during photosynthesis.

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Answer:

This problem involves the concept of a random walk, which is a mathematical model of a path consisting of a succession of random steps.

The question asks for the distance, R(n), from the center of a star after n steps of a photon, assuming a 2D random walk.

The random walk in two dimensions has a step length of A_i and the direction of the steps is uniformly distributed in [0, 2π). The change in position after each step can be written in Cartesian coordinates (Δx, Δy), where Δx = A_i cos(θ_i) and Δy = A_i sin(θ_i).

The displacement from the center after n steps is given by the vector sum of all the individual steps. This vector sum can be written in terms of its Cartesian coordinates, (X, Y), where X = Σ Δx and Y = Σ Δy. This sum over n random vectors is itself a random variable. The net displacement R(n) from the center of the star after n steps is given by the magnitude of the net displacement vector:

R(n) = √(X² + Y²)

Because each step is independent and has a random direction, the expected value of the cosine and sine for any step is zero. This means that the expected values of X and Y are both zero.

However, the mean square displacement is not zero. Because the steps are independent, the mean square displacement in each direction is additive. For a 2D random walk:

<X²> = Σ <(Δx)²> = n <(A cos θ)²> = n A²/2

<Y²> = Σ <(Δy)²> = n <(A sin θ)²> = n A²/2

Because <X²> = <Y²>, we can write:

<R²> = <X²> + <Y²> = n A²

So, the root mean square distance (the square root of the mean square displacement) after n steps is:

R(n) = √(<R²>) = √(n) * A

Therefore, the distance R(n) that the photon is expected to be from the center of the star after n steps grows as the square root of the number of steps, with each step having a length A. Please note that this result holds for a 2D random walk. A real photon in a star would be performing a 3D random walk, which would have slightly different characteristics.

Given:

The volume of alcohol, V_a=55 mL

The density of the alcohol, ρ_a=0.75 g/mL

The mass of the water in the mixture, M_w=25 g

The density of water, ρ_w=1.00 g/mL

To find:

The density of the mixture.

Explanation:

The mass of the alcohol in the mixture is given by,

The volume of the water in the mixture,

On substituting the known values,

Thus the density of the mixture is given by,

On substituting the known values,

Final answer:

Thus the density of the mixture is 0.83 g/mL

the When a ray of light spreads out, then the ray of light is called divergent rays.

A divergent ray always forms a virtual image, which is smaller than the size of object.

Hence, option (1) is the correct choice.

Radio waves are safe for diagnosing illnesses through magnetic resonance imaging due to their low energy.

Radio waves are useful for space research due to their long wavelengths.

Radio waves are waves which form a portion of the electromagnetic spectrum  that occur at lower frequencies than microwaves.

The frequencies of radio waves are as low as 3 Hz and as high as 1 gigahertz.

The wavelengths of radio waves occur within the range of thousands of meters to 30 cm.

The property radio waves that makes them safe for diagnosing illnesses through magnetic resonance imaging is their low energy as they are not ionizing.

The property that makes radio waves useful for space research is their long wavelengths which extends to thousands of meters.

In conclusion, radio waves are safe for magnetic resonance imaging and are applied in space research.

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Answer:

Which property best makes radio waves safe for diagnosing illnesses through magnetic resonance imaging?

✔ low energy of radio waves

Which property best makes radio waves useful for space research?

✔ long wavelengths of radio waves

Answer:

B.) 0.3s

Explanation:

The period of a wave that has a frequency of 3 Hz is 0.3s. Hence option B is correct.

Wave is is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down. Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.

Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform.

There are two types of the wave longitudinal wave and transverse wave.

Longitudinal wave : in which, vibration of the medium (particle) is parallel to propagation of the wave. Sound wave is a longitudinal wave. Transverse wave : in which, vibration of the medium (particle) is perpendicular to propagation of the wave. Light wave is a transverse wave.

Time period of the wave is inverse to the frequency of the wave.  

T = 1/f

T = 1/3

T = 0.333 s

Hence option B is correct.

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the answer is 80 degrees so simple try solving again

Answer:

Your answer is B

because it's on sneel's law.

that is sin of incident ray / sin of refracted ray is refractive index

The potential energy of the roller coaster is 176,400 J (joules).

The potential energy of an object is given by the formula PE = mgh, where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height or vertical position of the object.

In this case, the roller coaster is at a peak of 20m and has a mass of 900kg. The acceleration due to gravity, g, is approximately 9.8 \(m/s^2\).

Using the formula, we can calculate the potential energy:

PE = mgh

= (900 kg)(9.8 \(m/s^2\))(20 m)

= 176,400 J

Therefore, the potential energy of the roller coaster is 176,400 J (joules).

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Answer:

65

Explanation:

Answer:

24km/h

Explanation:

go it right on ingenuity 2020

The wavelength has not changed because the tension in the wire is proportional to the weight of the hanging object, and the wave speed depends only on the tension and the linear mass density of the string.

To calculate the change in wavelength of the third harmonic caused by replacing the light ball with the heavy one, we can use the equation for the wavelength of a standing wave on a string:

λ = 2L/n

where λ is the wavelength, L is the length of the string, and n is the harmonic number.

For the third harmonic, n = 3, so the original wavelength is:

λ₁ = 2(1.10 m)/3

λ₁ = 0.733 m

To find the tension in the wire with the original ball, we can use the formula:

F = mg + T

where F is the tension in the wire, m is the mass of the ball, g is the acceleration due to gravity, and T is the tension due to the wire itself.

Solving for T, we get:

T = F - mg

T = 110.0 N - (0.110 kg)(9.81 m/s²)

T = 108.82 N

Now that we have the tension, we can use the formula for the wave speed on a string:

v = √(F/μ)

where v is the wave speed, F is the tension, and μ is the linear mass density of the string.

The linear mass density can be found using the formula:

μ = m/LA

where m is the mass of the wire, L is the length of the wire, and A is the cross-sectional area of the wire.

μ = (π/4)(0.001024 m)²(1.10 m)/(0.018 kg/m³)

μ = 1.41×10⁻⁶ kg/m

Now we can find the wave speed:

v₁ = √(108.82 N/1.41×10⁻⁶ kg/m)

v₁ = 296.48 m/s

Using the equation for the wavelength of a standing wave on a string, we can find the new wavelength with the heavier ball:

λ₂ = 2L/n = 2(1.10 m)/3 = 0.733 m

The wavelength has not changed because the tension in the wire is proportional to the weight of the hanging object, and the wave speed depends only on the tension and the linear mass density of the string. Therefore, the change in the weight of the ball does not affect the wave speed or the wavelength.

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a) The angle θ1 which the righthand cable makes with respect to the ceiling is  sin^(-1)(692 N / 530 N).

b) The angle θ2 which the left-hand cable makes with respect to the ceiling is  sin^(-1)(692 N / 570 N).

We may utilise the tension of the right-hand cable as well as its vertical and horizontal components to determine the angle 1. θ2 = sin^(-1)(692 N / 570 N).

We may apply the ideas of trigonometry and vector addition to address this issue.

a) The tension of the right-hand wire as well as its vertical and horizontal components can be used to determine the angle 1.

T1sin(1) calculates the vertical component of the right-hand cable's tension, which is equal to the object's weight (692 N).

T1sin(θ1) = 692 N

We may rearrange the equation to find 1:

θ1 = sin^(-1)(692 N / T1)

We can find 1 by substituting the given tension value, T1 = 530 N:

θ1 = sin^(-1)(692 N / 530 N)

b) Similarly, we can use the formula to determine the angle 2 the left-hand cable's tension and its vertical and horizontal components.

The vertical component of the left-hand cable's tension is given by T2sin(θ2), and it should also be equal to the weight of the object (692 N).

T2sin(θ2) = 692 N

To find θ2, we can rearrange the equation:

θ2 = sin^(-1)(692 N / T2)

Substituting the given tension value T2 = 570 N, we can solve for θ2:

θ2 = sin^(-1)(692 N / 570 N)

Calculating these angles using the given tension values will provide the answers in degrees.

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In this process, 400 joules of work are done on the system, which means energy is being transferred into the system in the form of work. At the same time, the thermal energy of the system is decreasing by 300 joules. This suggests that the system is also losing energy in the form of heat and it indicates that the work done on the system is used to remove thermal energy from the system, leading to a decrease in the system's temperature. This process is likely an example of a cooling process, such as refrigeration or air conditioning.

Overall, the net change in the system's energy is -300 joules (decrease in thermal energy) + 400 joules (work done on the system) = 100 joules. This means that the system has gained 100 joules of energy overall, but it has gained it in the form of work and lost it in the form of heat.

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The lead ball will float with about 17% of its volume above the surface of the mercury.

We know that density is defined as mass per unit volume of a substance. The density of a substance is an intrinsic property which can be used to identify a substance.

Given that Lead is less dense that mercury, we know that lead will float on mercury. Since the density of mercury is 13.6 g/cm3 and that of lead is 11.3 g/cm3, lead ball will float with about 17% of its volume above the surface of the mercury.

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Missing parts;

A spherical ball of lead (density 11.3 g/cm3) is placed in a tub of mercury (density 13.6 g/cm3). Which answer best describes the result?

A.The lead ball will float with about 83% of its volume above the surface of the mercury.

B.The lead ball will float with about 17% of its volume above the surface of the mercury.

C.The lead ball will float with its top exactly even with the surface of the mercury.

D.The lead will sink to the bottom of the mercury.

E.none of the above

Answer:

Its D

Explanation:

edgen 2 0 2 1

Answer:

D.) To get the reader to understand the two types of signals

Explanation:

Edge, 2022.

(See the attachment below.)

Good luck on the quiz!

<3

Answer:

Iron and lead generally have low specific heats.