in magnetic circuits, the effect of magnetizing flux can be represented by a magnetizing inductance. this inductance appears in parallel with the leakage inductance. a) false b) true

Here are the answers to the questions:1. Three main orbital changes that the earth undergoes and their time periods are:A. Precession- every 26,000 years B. Obliquity- every 41,000 years C. Eccentricity- every 100,000 yearsThese changes in the earth's orbit, together, have an impact on the amount of solar radiation that reaches the Earth's surface, which then affects climate change. Three cyclical orbital changes and their times associated with Milankovitch are:A. Eccentricity - every 100,000 yearsB. Obliquity - every 41,000 yearsC. Precession - every 26,000 years2. All EMR in order of wavelength are:- Gamma rays- X-rays- Ultraviolet radiation- Visible light- Infrared radiation- Microwave- Radio wavesForms of EMR from the sun that are reaching right now are UV radiation, visible light, and infrared radiation.

The number of forms of EMR reaching the moon right now is two, UV radiation, and visible light.The ozone layer is present in the stratosphere and is formed through a series of complex chemical reactions. The primary function of the ozone layer is to protect the earth from the harmful effects of UV radiation by absorbing it. The balance of EMR plays a critical role in the greenhouse effect. As the amount of greenhouse gases increases, the amount of energy that is absorbed by the Earth's surface also increases. Carbon dioxide and other greenhouse gases can absorb and emit infrared radiation, which plays a crucial role in climate change.3. The four forms of heat transfer to and on planet earth are:- Conduction- Convection- Radiation- AdvectionThese four forms of heat transfer are responsible for weather on planet Earth.

For example, when the sun heats the ground, it results in conduction, which then results in convection as the air heats up and rises. This can lead to cloud formation and precipitation.4. The time it takes for EMR from the University of Delaware to reach:A. Moon - About 1.28 secondsB. Jupiter - About 33.75 minutesC. Closest star (not the sun) - About 4.37 yearsD. Your mother - This question is not clear, please provide more context.

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The density of a substance with a mass of 20. 0 g and a volume of 4. 0 ml is 5g/ml.

Density :

Density is calculated as:

Density = mass/volume

ρ = m/v

where,

ρ = density of the substance

m = mass of the substance

v = volume of the substance

ρ = m/v

ρ = 20.0/4.0

ρ = 5g/ml

so, density is 5g/ml.

The density of a substance with a mass of 20. 0 g and a volume of 4. 0 ml is 5g/ml.

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Explanation:

Function of distance w.r.t time :

\(x(t) = \: y = \sqrt{2t} \)

Differentiate w.r.t time to get velocity :

\( \frac{dy}{dt} = v = \frac{1}{ \sqrt{2t} } \)

Differentiate w.r.t time to get Acceleration :

\( \frac{d^2y}{dx^2} = a \: = - \frac{1}{2t \sqrt{2t} } \)

In order to get a stone slab to move, one would have to apply force to it. This can be done in a number of ways, depending on the situation. Here are a few possible laws that could be proposed for moving a stone slab:1. Newton's first law of motion: This law states that an object at rest will stay at rest unless acted upon by an external force. Therefore, to move a stone slab, one would need to apply a force to it.

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Answer: A. The amount of water releases into streams and rivers will increase.

According to the question, the velocity of ball 2 after the collision is 30 m/s.

What is velocity?
Velocity is a vector quantity that describes the rate and direction of an object's motion. It is the displacement of an object over a period of time and is usually expressed in terms of distance (meters, feet, or kilometers) divided by time (seconds). It can also be expressed as the speed of an object in a particular direction. Velocity is a key factor in describing the motion of objects, as it accounts for both the speed and direction of an object's motion. It is an important concept in physics, and it is used to calculate forces and potential energy.

From the laws of conservation of momentum, the final velocity of ball 2 can be calculated as follows:

m1u + m2v = m1v1 + m2v2

0.2 x u + 0.2 x v = 0.2 x u + 0.2 x v2

v2 = u - (6N x 0.1s)/0.2kg

v2 = u - 30 m/s

Therefore, the velocity of ball 2 after the collision is 30 m/s.

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Answer:The SI unit of energy/work is the joule (J), named for English physicist James Prescott Joule (1818 - 1889). Joule discovered the relationship between heat and mechanical work, which led to the development of the laws of thermodynamics

Explanation:

Second class lever has mechanical advantage always more than one as load is in between fulcrum and effort making the effort arm longer than the load arm. It multiplies force. ... It does not multiply force but changes the direction of force.

Explanation:

work done=force*distance

force=50n

distance=75m

therefore work done is

50*75=3750joules

Answer:

zeros and ones

Explanation:

pls brainliest

The digital signals are generally in the form of zeros and ones.

The digital signals turn sounds into zeros and ones.

An electronic signal is transmitted as binary code that can be either the presence or absence of current, high and low voltages, or short pulses at a particular frequency. This signal is called a Digital Signal.

Digital signals take value in discrete form only at a given time.

Any digital signal can be converted into an analog signal with the help of a digital to analog converter.

If the sound signal is in the form of a digital signal, then it will turn the sound into the form of zeros and ones.

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Answer:

Explanation:

The distance will be the total distannce covered during the journey.

If you move 3 meters East and move 4 meters north, then the distance will be calculated as;

Distance = distnace through East+distance through north

Distance = 3m + 4m

Distance = 7m

Displacement is the distance covered in a specified direction. It is the shortest distance covered by me. This can be gotten using the Pythagoras theorem.

d² = 3²+4²

d² = 9+16

d² = 25

d = √25

d = 5m

Hence the displacement of the object is 5metres

\(\\ \sf\longmapsto 300-70.5=229.5kJ\)

We know

\(\boxed{\sf Efficiency=\dfrac{Used\:Energy}{Supplied\:Energy}\times 100}\)

\(\\ \sf\longmapsto Efficiency=\dfrac{229.5}{300}\times 100\)

\(\\ \sf\longmapsto Efficiency=\dfrac{229.5}{3}\)

\(\\ \sf\longmapsto Efficiency=76.5\%\)

The answer to the given question is 820 Kelvin. Gauss' Law demonstrates how electric fields, E, can be produced by static electricity, q. Gauss' Law, which bears the name of German physicist Carl Friedrich Gauss, is the third of Maxwell's four equations. According to Gauss' Law, an electric charge, qv, or static electricity, produces an electric field, E. (voltage).

This question is an application of Gauss Law, which states that the pressure P and temperature T of an ideal gas are directly proportional to one another. In other words, adiabatic increase in pressure will result in the same rise in temperature. Mathematically,

it can be written as: 

P1/ T1 = P2/ T2

Therefore, Temperature T2 = 275 kPa * 298K / 100 kPa = 820 K. Thus, the minimum compressor exit temperature possible is 820 Kelvin.

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Answer:

54 miles.

Explanation:

12 times 4.5.

Answer:

\(\boxed {\tt 54 \ miles}\)

Explanation:

Distance can be found by multiplying the speed by the time.

\(d=s*t\)

The speed is 12 miles per hour and the time is 4.5 hours. Therefore,

\(s= 12 \ mi/hr\\t=4.5 \ hr\)

Substitute the values into the formula.

\(d= 12 \ mi/hr * 4.5 \ hr\)

Multiply. Note that that hours, or "hr" will cancel each other out.

\(d= 12 \ mi * 4.5\)

\(d= 54 \ mi\)

d= 54 miles

The distance covered is 54 miles.

Answer:

1) C, 2) C, 3) B, 4) D, 5) A/B, 6) D, 7) D, 8) A, 9) B, 10) A

Explanation:

1) Seconds, minutes and days are time units. (Correct answer: C)

2) The displacement is shortest distance between the point of origin and the point of destination. (Correct answer: C)

3) The velocity is the rate of change of position in time. (Correct answer: B)

4) Graphs are a very useful ressource to infer characteristics inherent to a studied physical variable. (Correct answer: D)

5) There are two possible answers, since both milimeters and meters are units for distance. (Correct answers: A/B)

6) The distance is the arc length of the entire path that object travelled. (Answer: D)

7) Traditionally, in a position vs. time graph we plot time in the x-axis. (Answer: D)

8) In this case, we use a distance-time graph, where travelled distance is the dependent variable and time is the independent variable. (Answer: A)

9) The point of origin is the initial position of the object. (Answer: B)

10) The point of destination is the final position of the object. (Answer: A)

Jupiter would exert the most gravity on a spacecraft that is passing close to Jupiter. Hence option D is correct.

The biggest planet in the Solar System, Jupiter, is the fifth planet from the Sun. It is a gas giant with a mass that is slightly less than one thousandth that of the Sun and more than two and a half times that of all the other planets in the Solar System put together. After the Moon and Venus, Jupiter is the third brightest natural object in the Earth's night sky, and people have been seeing it since ancient times. Jupiter, the main deity of ancient Roman religion, inspired its name.

Helium makes up a quarter of Jupiter's mass and a tenth of its volume, whereas hydrogen makes up 90% of the planet's volume. Jupiter's interior is constantly contracting, which produces more heat

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Answer:

4.9L hope this helped!

The wavelength of the wave with the frequency of 95.7 MHz is 3.1 meters.

Wavelength is the distance between identical points such as crests or troughs in the adjacent cycles of a waveform signal which is propagated in space or along a wire. In the wireless systems, this length is usually specified in the units of meters (m), centimeters (cm) or millimeters (mm).

λ = v/f

where, λ = wavelength of the wave,

v = velocity of the wave,

f = frequency of the wave

f = 95.7 MHz = 95.7 × 10⁶Hz,

v = 3 × 10⁸ m/s

λ = 3 × 10⁸ / 95.7 × 10⁶

λ = 0.031 × 10²

λ = 3.1 meters

Therefore, the wavelength of the wave is 3.1 meters.

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Answer: frequency

Explanation:

amplitude is the max height at which the wave reaches
wavelength distance b/w two waves

the speed at which the wave is oscillating

frequency is no. of oscillations of  a wave per unit length

Answer:

a. 90 dB

b. 80 dB

Explanation:

The given parameter of the sound is as follows;

The level to which the headphones are tuned = All the way up

The intensity of the sound of the headphones when tuned all the way up = 100 dB

a. The relationship between level change in loudness, ΔL, and the ratio of loudness, 'x', is presented as follows;

ΔL = 10·log₂(x) ≈ 33.22·log(x)

Therefore, for a sound to be half as loud, we have x = 1/2, therefore;

ΔL = 10·log₂(1/2) = 10·log₂(2⁻¹) = -10 ≈ 33.22·log(1/2)

The change in the intensity level for a sound half as loud, ΔL = -10 dB

Given that the sound was initially at 100 dB, the new level for a sound half as loud = 100 dB + ΔL = 100 dB - 10 dB = 90 dB

The decibel level the music must be set for a sound half as loud = 90 dB

b. In order for the sound to be 1/4 as loud, we have;

ΔL = 10·log₂(1/4) = 10·log₂(2⁻²) = -20

Therefore, the change in the level of the sound intensity level, ΔL by -20 dB will given a sound that is 1/4 as loud

The initial intensity level = 100 dB

The intensity level for a sound 1/4 as loud = 100 dB - 20 dB = 80 dB

Answer: Force required to 25 joule work when the force causes a displacement of 0.5m is 50N

Explanation: To calculate the work done we use the formula

W=F.s                               (1)

W= work done

F=  force applied               s= displacement

Given, work done W= 25 joules= 25 J

displacement s= 0.5m

∴From equation (1) we get the force required when work is done and displacement is given, that is

F\(=\frac{W}{s}\)                                (2)

∴Force required \(F=\frac{W}{s}= \frac{25J}{0.5m}=50N\)            

(1 J is the work done by a force of 1 N acting over a displacement of 1 m and so 1 J= 1 Nm⇒ 1 N = 1 J/m)

ANS: Force required to do 25 J work when a force causes displacement of 0.5m = 50 N

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Answer:

It is 15000 Kgs.

To calculate the magnitude of the angular velocity vector, we can use the formula: Magnitude of Angular Velocity (ω) = √(ωx² + ωy² + ωz²)

Given the MATLAB/Mathematica input:
x = 2
y = 0
z = 5
v = 9
uvec = [0, 5, -2]
We can see that the angular velocity vector is defined by its components ωx, ωy, and ωz, which are proportional to the vector uvec. To find the magnitude of the angular velocity vector, we need to calculate the squares of its components:
ωx = v * uvec[1] = 9 * 0 = 0
ωy = v * uvec[2] = 9 * 5 = 45
ωz = v * uvec[3] = 9 * (-2) = -18
Substituting these values into the formula, we get:
Magnitude of Angular Velocity (ω) = √(0² + 45² + (-18)²)
Magnitude of Angular Velocity (ω) = √(0 + 2025 + 324)
Magnitude of Angular Velocity (ω) = √2349
Magnitude of Angular Velocity (ω) ≈ 48.47
Therefore, the magnitude of the angular velocity vector is approximately 48.47.

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Answer:

B

Explanation:

The object with the most thermal energy is the choice B. This is because from the given choices, it has the most mass and highest temperature of all the bricks.

Thermal energy is the sum total of the average kinetic energy within the system.

It is mathematically expressed as:

    Quantity of energy  = mass   x  specific heat x  change in temperature

We see that the quantity of the thermal energy is directly proportional to mass and temperature changes.

Answer:

B. a 4 kg brick at 25 degrees Celsius

Explanation:

did the quiz <3

Answer:

with fuel

Explanation:

Answer:

you can add more energy to the car by launching it again.

Explanation:

The true statements about exomoons are:

A. Exomoons are likely to exist

D. Exomoons have been used as locations within science fiction stories

C. Exomoons must be only made of ice

A. Exomoons are likely to exist: It is believed that exomoons could exist in planetary systems beyond our own. While the detection and confirmation of exomoons remains a challenge, their existence is considered plausible based on the understanding of moon formation and the prevalence of exoplanets.

D. Exomoons have been used as locations within science fiction stories: Exomoons, being a fascinating concept, have captured the imagination of science fiction writers. They have been depicted in various stories and movies as intriguing and potentially habitable worlds.

E. Exomoons are moons that orbit exoplanets: An exomoon refers to a moon that orbits an exoplanet, which is a planet outside our solar system. Just like moons in our own solar system, exomoons are expected to orbit exoplanets, providing additional complexity and dynamics to the planetary systems.

C. Exomoons must be only made of ice: This statement is not true. Exomoons can be composed of various materials depending on their formation and composition. While some exomoons could have icy surfaces or subsurface oceans, others may be rocky or have diverse compositions.

It is important to note that our understanding of exomoons is still limited, and further research and observations are required to confirm their existence and study their characteristics.

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