An artificial satellite moves at a steady 25,000 km/hr in a circular orbit around earth. is it accelerated?

Answer:

mass has no effect on acceleration due to gravity

Answer:

gravity

Explanation:

because  mass doesnt matter on gravity

The work done by winding up a hanging cable of length 12 ft and weight density of 2 lb/ft is 676 ft/lb.

Consider that the entire hanging cable is lifted by 26 feet and there is a weight density of 2 pounds per feet.

Then, the work done by hanging is

W = ∫2x dx from 0 to 26

W = 676 ft/lb.

When a force moves something over a distance, work is done. The energy transferred, or work done, can be calculated by multiplying the force by the distance moved in the direction of the force.

Work done = force × distance moved in the direction of the force = energy transferred.

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The correct answer is aldehyde.

An ether group, a hydroxyl group, and an aldehyde group may all be found in the structure of vanillin. Vanillin is known by the IUPAC designation 4-hydroxy-3-methoxy benzaldehyde. This demonstrates that ether is the least preferred group, followed by hydroxyl and aldehyde.

Only three other carbon atoms are connected to the carbon atom that is bonded to the aldehyde group. Except for the methyl group in ether, there are no other carbon atoms connected to 4 distinct groups that create a chiral centre in the aromatic ring. Additionally, the methyl group is not chiral since hydrogen is connected to three of its surfaces. Furthermore, we proved that a chiral centre is necessary for a molecule to be chiral.

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According to the illustration, the graphic illustrates the arrow and the intended target.

To target something or someone means to aim at them specifically. To aim a gun at a shooting range is an example of a target. To focus all of your efforts on one objective is an example of a target. verb. A target is an item or objective that is the subject of an aim.

Two or three arrows have been depicted in the green area of the image, which is located very distant from the red location. Given that they are all in the same location, this illustrates the idea of weak or low precision and excessive precession.

As a result, choice B is accurate.

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The speed of the sphere at the bottom of the swing is 2.182 m/s if the electric field is turned off.

The sum of the Kinetic energy and the potential energy is known as the total Mechanical Energy.

[tex]U_f +K_f=U_i+K_i[/tex]

Where, [tex]U_{f}[/tex] and [tex]K_{f}[/tex] are final potential energy and kinetic energy respectively.

[tex]U_{i}[/tex] and [tex]K_{i}[/tex] are initial potential energy and kinetic energy respectively.

The total Mechanical energy of the system remains constant if the internal forces are conservative and the external forces do no work. This is called the Principle of conservation of energy.

The length of the string L = 2.3

As the electric field is turned off, then it just behaves like a simple pendulum.

Hence, using the Conservation of mechanical energy, in the pendulum, at the bottom the total energy is conserved and the kinetic energy and mechanical energy are equal.

Let the mass of the sphere be m and the velocity of the sphere be v,

Kinetic energy (K) = 1/2 mv²

Potential energy(P) = mgL

g = 9.8 m/s²

Equating both the energies,

K = P

1/2 mv² = mgL

v² = 2gL

v=[tex]\sqrt{2gL}[/tex]

[tex]v=\sqrt{2\times9.8\times24\times10^{-3}}[/tex]

v = 2.182m/s

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Answer:

D. Twice the magnitude and the same direction as vector A.

Explanation:

When multiplying a vector by a scalar (a number), the length changes but the direction stays the same.

Therefore, vector 2A is twice the magnitude of vector A, but in the same direction as vector A.

Answer:

D

Explanation:

Here the given vector to us is 2A . Here A is a vector and 2 is a Scalar number. say when you multiply a Scalar x by vector y the magnitude becomes x *y but the direction remains same . as scalar quantities have only magnitude but no direction. Here A is multiplied by 2 so the magnitude becomes 2 times but the direction remains same.

So from the given options option D , twice the magnitude and the same direction as vector A is the correct answer.

The planet has an approximate mass of: 5.2815*10^10 metric tones

To solve this problem the formulas and the procedures that we have to use  are:

Where:

Information about the problem:

Applying the circumference of a sphere formula and clearing the radius we get:

c = 2 * π * r

r = 23500 km / 2 * 3.1416

r = 3740.132 km

Applying the volume of the sphere formula we get:

v= (4 *π * r³) / 3

v= (4 *3.1416 * (3740.132 km)³) / 3

v = 2,1915 *10^11 km³

By converting the volume units from (km³) to (ml) we have:

v = 2,1915 *10^11 km³ * 1*10^5 ml/1 km³

v = 2.1915*10^16 ml

Applying the density formula and clearing the mass we get:

d = m/v

m = d * v

m = 2.41 g/ml * 2.1915*10^16 ml

m = 5.2815*10^16 g

By converting the mass units from (g) to (metric tone) we have:

m = 5.2815*10^16 g * 1 kg/1000 g * 1 metric tone/1000 kg

m = 5.2815*10^10 metric tones

It is a physical quantity that expresses the ratio of the body mass to the volume it occupies.

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The magnitude of the resultant velocity of the soccer ball is: 25.059 m/s

The formula for projectile motion that we will use to solve this exercise is:

vf= √[v(x)² + v(y)²]

Where:

Information about the problem:

Applying the final velocity formula we have:

vf= √[v(x)² + v(y)²]

vf= √[(22 m/s)² + (12 m/s)²]

vf= √[484 m²/s² + 144 m²/s²]

vf= √[628 m²/s²]

vf= 25.059 m/s

The projectile motion is the motion whose trajectory describes a parabola having a horizontal and a vertical component of motion.

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The speed will be equal to 6.67 x 10¹⁷ meters per year.

Speed is defined as the ratio of the time it takes for a body to cross a distance to the time it takes. Since it is a scalar quantity, speed cannot be represented by a direction.

Given that the radius of the galaxy is 3x1020 m. The time to cross one edge to another edge of the galaxy is 300 years.

The speed will be calculated by using the formula below:-

S = ( 2 x 3 x 10²⁰ ) / 300

S = 6.67 x 10¹⁷ Meters per year.

Therefore, the speed will be equal to 6.67 x 10¹⁷ meters per year.

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We link the AC voltages in series to raise the voltage and increase the output voltage. Because your system is consuming current while the measurement is being taken, you are lowering some voltage across the internal impedance of the battery.

Z stands for impedance, which is a statement of the resistance to alternating and/or direct electric current that an electronic component, circuit, or system offers. Resistance and reactance are two independent scalar (one-dimensional) phenomena that make up the vector (two-dimensional) quantity known as impedance.

When a school marching band is prevented from taking part in a parade because they cannot pay the bus' gas expenses, that is an example of impedance. A line of resistance within an electrical current is an illustration of impedance.

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t = 497.2 sec

outer diameter, Do=2a

thickness, t= 0.225m.  Inner diameter, Di= 2-2*0.225

                                                                  = 1.55m

mean Radius = 0.8975m.

I= moment of inertia  of flywheel

= 400 * (0.8875)^2

=315.0625 kgm^2

w = 200 π rad/s

K.E of flywheel = 1/2 Iw^2

= 62190844.73 joule

= 100x10^3*t ÷ 0.8

t = 497.2 sec

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= 1.02 x 10^-7 N/C should be the charge (sign and magnitude) of a 1.48-g particle be for it to remain stationary when placed in a downward-directed electric field of magnitude 700 n/c

Due to the physical property of electric charge, charged material experiences a force when it is subjected to an electromagnetic field. You might be electrically neutral or positively charged (commonly carried by protons and electrons respectively). While similar charges repel one another, opposite charges attract. A thing that has no net charge is said to be neutral. For problems that do not need taking into account quantum events, classical electrodynamics—the term used to describe early understanding of how charged particles interact—remains accurate. Since the net charge—the total of the positive and negative charges in an isolated system—is an electric charge, it is a conserved property.

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The equation of the force between the two masses separated by distance r, is determined as Gmm/r².

The equation of the force between the two masses is determined from Newton's law of universal gravitation as shown below.

f = Gmm/r²

where;

Thus, the equation of the force between the two masses separated by distance r, is determined as Gmm/r².

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The separation between successive segments first decreased and then increased with time.

A vector is a quantity or phenomenon with independent properties for both size and direction. The mathematical or geometrical representation of a quantity is another use of the term. Vectors can be found in nature as force, momentum, electromagnetic fields, weight, and velocity. A scalar is a number or phenomenon that just shows magnitude and no discernible direction. Scalars include things like velocity, mass, electrical resistance, and hard disc storage capacity. Weight is the force by the acceleration of gravity g acting on mass m. In mathematics and physics, the term "vector" is used informally to describe some quantities that cannot be described by a single number or by a set of vector space elements.

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The precision of the range of instruments was done in the class room with few things like scale volumetric flask based on the criteria mentioned below.

The maximum and minimum range values that an instrument may measure for a quantity or signal, such as amps, volts, or ohms. A lot of multimeters have an auto range feature that automatically chooses the right range based on the measurement's magnitude. This offers the highest resolution of a measurement in addition to a meaningful reading.

Precision is the capacity of an instrument to repeatedly duplicate the same measurement with reliability.

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We have enough information to deduce what the chart is about.

A bar chart is one of the means that we can use to present data. It has the advantage that it can be used for comparison. We can use it to show the influence of different factor levels on one variable.

Now the graph is about the use of social media among teenagers in the united states. It is obvious from the graph that we can see the percentage of teenagers that report that they use a particular social media and those who report it as their most used.

Looking at the chart, we can see clearly that the x axis has to do with different kinds of social media and the vertical y axis has to do with the percentage of the people that use the social media. Thus, we can see the information about the chart clearly.

Hence, we have enough information to deduce what the chart is about.

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Answer:

object material or a bodie

Wave length photo attachment

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The label on the car's antifreeze container claims to protect the car between −40°c and 140°c. The Celsius temperature to Fahrenheit are -40°F and 284°F respectively.

Temperature, measure of hotness or coldness expressed in terms of any of several arbitrary scales and indicating direction in which heat energy will spontaneously flow—i.e., from a hotter body (one at higher temperature) to a colder body (one at a lower temperature). Temperature is not equivalent of the energy of a thermodynamic system; e.g., a burning match is at a much higher temperature than an iceberg, but the total heat energy contained in an iceberg is much greater than energy contained in a match. Temperature, similar to pressure or density, is called an intensive property—the one that is independent of the quantity of matter being considered—as distinguished from extensive properties, such as mass or volume.

Three temperature scales are there in general use today. The Fahrenheit (°F) temperature scale is used in the United States and few other English-speaking countries. The Celsius (°C) temperature scale is standard in virtually all countries that have adopted the metric system of measurement, and it is widely used in sciences. The Kelvin (K) scale, an absolute temperature scale (obtained by shifting the Celsius scale by −273.15° so that absolute zero coincides with 0 K), is recognized as the international standard for the scientific temperature measurement.

Now the to convert Celsius to Fahrenhite:

°F = (°C * 1.8) + 32

   =(−40°*1.8)+32

   =-40°

°F = (°C * 1.8) + 32

    =(140°c*1.8)+32

    =284°

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The correct answer -5.49 m/s.

The data is provided as follows.

Initial velocity (u) =?, Final velocity (v) = 8.62 m/s.

Time is 8.25 seconds, and the distance is 12.9 meters.

As a result, the following formula can be used to determine beginning velocity.

v = v_0 + at

8.62 m/s = v_0 + a×8.25

v_0 = 8.62-8.2a ____(1)

s = v_0×t +1/2 a ×t^2 _____(2)

As a result, enter the value from equation (1) into equation (2) in the manner described below.

s =8.62m/s-8.25a×t+1/2 a×t^2 ______(3)

Now enter the following values for s and t into equation (3).

12.9 m = (8.62-a×8.25)×8.25+1/2 a× (8.25)^2

a= 1.71 m/s^2

As a result, the value of initial velocity using equation (1) will be as follows.

v_0=8.62-8.25×1.71

v_0=-5.49 m/s

As a result, we may say that the car's beginning speed is -5.49 m/s.

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Consider the Gaussian surface in the form of sphere, the electric field between the spheres is radially outwards.

For a positive charge, the electric field lines are projecting outwards of positive charge.

For a negative charge, the electric field lines are projecting inwards of positive charge.

Hence, the electric field points radially outwards.

The physical field that surrounds electrically charged particles, known as an electric field (or E-field), exerts force on all other charged particles in the field, either attracting or repelling them.  Additionally, it describes the physical environment of a system of charged particles. Time-varying electric currents and electric charges are the building blocks of electric fields. One of the four basic interactions (also known as forces) of nature, the electromagnetic field, manifests itself in both electric and magnetic fields.

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The electric field is a vector field, this requires a vector addition. Add the vectors 52 and 46. So, the x component of the resultant vector is 9.

A single charge, let's assume q1, can produce the electric field shown by

Kq1/r​​​​​​2

When someone adds another charge, it experiences an electric force due to the electric field

Electric force = Electric field x charge =Eq2 = kq1 q2/r​​​​​​2​​​

For adding to vectors, we add the x and y components separately, and then find the resultant vector =

Resultant x component + resultant y component

Adding the X component,

5x+4x=9x

Adding the Y component,

2y+6y=8y

Therefore, the resultant vector is 9x+8y.

The vector sum of vector addition is just the consequence. It is the result of multiplying at least two vectors together. The outcome of adding the displacement vectors A, B, and C is vector R. An appropriately drawn, scaled, vector addition diagram can be used to compute vector R, as illustrated in the diagram.

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The EMF induced in coil of the bar magnet  with respect to change in flux is calculated as  - 1.5 v

Given:

N= 50 turns

change in flux= 0.03 wb/s

emf= - N×[tex]\frac{d}{dt}[/tex]Ф

=  - 50×0.03

=  - 1.5 v

What is emf in Faraday's law?

Faraday's law describes the magnitude of the voltage (emf), or voltage, induced (generated) during a conductor due to electromagnetic induction (changing magnetic fields). It states that the induced emf during a conducting circuit is proportional to the rate of change of magnetic flux linkage Φ within the circuit.

What is EMF ?

Electromotive force (EMF) is equal to the terminal potential difference when no current flows. EMF and terminal electric potential (V) are both measured in volts, however they're not the same thing. EMF (ϵ) is that the amount of energy (E) provided by the battery to each coulomb of charge (Q) passing through'

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Projectile motion is the motion of an object thrown (projected) into the air. After the initial force that launches the object, it only experiences the force of gravity. The object is called a projectile, and its path is called its trajectory. As an object travels through the air, it encounters a frictional force that slows its motion called air resistance. Air resistance does significantly alter trajectory motion, but due to the difficulty in the calculation, it is ignored in introductory physics.

the components of the following projectile's velocity into X- the axis and Y - axis

1. vx = 35 cos15°  and vy sin15°

2. vx = 35 cos30° and vy sin30°

3. vx = 35 cos45° and vy sin45°

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Answer:

c. Electrodynamics...

The study of moving charges is electrostatics, which is in option e. Electrostatics is the branch of physics that deals with the study of stationary or non-moving electric charges and their interactions. Hence, option e is the correct answer.

Electrostatics is a fundamental branch of electromagnetism, which is a branch of physics that deals with the study of electromagnetic phenomena. Specifically, electrostatics focuses on the behavior of electric charges that are at rest or not in motion. It involves the study of electric charges, electric fields, and the forces that arise between charged objects. Hence, option e is the correct answer.

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The angle between the vectors is 0.59 radians.

cos(ϕ)=[tex]\frac{u.v}{|u|.|v|}[/tex]

cos(ϕ)= [tex]\frac{4}{\sqrt{5}\sqrt{6}}[/tex]

ϕ= 43.09°

or 0.59 in radians

The angle that is created at the intersection of two vector tails is called as the angle between the two vectors.

If the vectors are not joined tail-to-tail, we must shift one of the vectors using parallel shifting in order to join them from tail to tail.

The angle between the tails of two vectors defines the distance between them. Either the cross product or the dot product (scalar product) can be used to find it (vector product).

The angle between two vectors always ranges from 0° to 180°, as you should be aware of.

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Wavelength and frequency are inversely proportional to each other. as wavelength increases, the frequency will decrease.

Frequency is defined as the number of oscillations of a wave per unit of time. The SI unit of frequency is Hertz(H).

Wavelength is defined as the distance between two adjacent points also known as crests. The two points should be in phase. It is measured in meters and it is denoted by λ.

The relation between frequency and wavelength is inverse.

                                          F = 1/λ

If the frequency increases, the wavelength will decrease and vice versa.

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Frequency is inversely proportional to wavelength. As wavelength increases, the frequency will decrease

Wavelength is inversely proportional to frequency, meaning that as one falls, the other rises, and vice versa. A high-frequency wave has a short wavelength and vice versa. The wavelength is the distance between one point and the same point in the next wave cycle. The frequency is defined as the number of times a point on a wave travels through another point in a given period.

The space between two neighboring crests of a wave is defined as its wavelength and in meters. The quantity of wavelengths that move through a specified point in one second is defined as the frequency.

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Planet building occurs through the process of accretion which involves the clumping of small particles into larger masses.

Its spatial period is known as the wavelength, which in physics is the distance that a periodic wave cycles across. It is a characteristic of both traveling waves and standing waves as well as other spatial wave patterns. It is the separation between two successively related wave points of the same phase, such as two close-by crests, troughs, or zero crossings. The inverse of the wavelength is known as the spatial frequency. It is commonly denoted by the Greek letter lambda, which is also known as the "wavelength." Also usually referred to as having a wavelength are the sinusoidal wave envelopes, modulated waves, and waves produced by the interference of several sinusoids. When a sinusoidal wave is thought to be moving at a constant speed, the relationship between wavelength and frequency is inverse.

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The time taken by the light to travel to the driver is 48.3 x 10^-9 seconds or 48.3 nanoseconds.

The speed of a light wave is given by the following formula,

Speed = Distance/Time

The distance to be covered and the velocity of the light waveis given. From the given information the time taken by the wave to travel the distance can be calculated,

Putting distance = 14.5 m and speed = 3 x 10^8 m/s

3 x 10^8 m/s = 14.5 m/Time

Time = 48.3 x 10^-9 seconds or 48.3 nanoseconds.

Thus, the time taken by the light to travel to the driver is 48.3 x 10^-9 seconds or 48.3 nanoseconds.

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The time taken by the light to travel to the driver is 48.3 x 10^-9 seconds or 48.3 nanoseconds.

The speed of a light wave is given by the following formula,

Speed = Distance/Time

The distance to be covered and the velocity of the light wave is given. From the given information the time taken by the wave to travel the distance can be calculated,

Putting distance = 14.5 m and speed = 3 x 10^8 m/s

3 x 10^8 m/s = 14.5 m/Time

Time = 48.3 x 10^-9 seconds or 48.3 nanoseconds.

Thus, the time taken by the light to travel to the driver is 48.3 x 10^-9 seconds or 48.3 nanoseconds.

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The electric field in front of the wall will be 4.61 × 10⁹ N/C.

An electrostatic force is a natural environment that covers electric polarization and acts as an attractor or repellent to all other energetic particles in the vicinity. It can also refer to a network of charged particles' test performance.

The electric field is given as,

E = σ / 2ε₀

Where σ is the charge per unit area, ε is the permeability (8.85 x 10⁻¹² N-m² / C²).

A non-conducting wall carries a charge with a uniform density of 8.15 µc / square cm.

The charge per unit area of the wall will be

σ = 8.15 × 10⁻⁶ C/cm²

σ = (8.15 × 10⁻⁶ C/cm²) × (100 cm / m)²
σ = 8.15 × 10⁻² C/m²

Then, at a distance of 2.00 cm, the electric field will be

E = 8.15 × 10⁻² / 2(8.85 x 10⁻¹²)

E = 4.61 × 10⁹ N/C.

The electric field in front of the wall will be 4.61 × 10⁹ N/C.

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