All the formulas of motion class 9

Hi! I'm a few days late since I just saw this question just now, but I'll answer anyway.

Answer:

When an unbalanced force acts on a moving object, the velocity of the object will change. Change in velocity means a change in speed, direction, or both. For example, if you kick a soccer ball and it moves from one place to another, it means that unbalanced forces are acting upon it. The ball moves from one place to another after kicking it so the position changed.

Binding energy refers to the energy needed to break apart a nucleus into its individual nucleons. The correct answer is c. 9.5 MeV.

Nucleons are particles found in the nucleus, which include protons and neutrons.

For atoms with A 100, the binding energy per nucleon is approximately 9.5 MeV. This means that on average, each nucleon in the nucleus of an atom with A 100 is bound to the others by 9.5 MeV of energy.
For atoms with A 100, the binding energy per nucleon is approximately 8 MeV. Your correct answer is e. 8 MeV. The binding energy is the energy required to disassemble a nucleus into its constituent nucleons (protons and neutrons). In this case, for atoms with a mass number (A) of 100, the binding energy per nucleon is approximately 8 MeV.

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Answer:  A.

Single-celled organisms duplicate their genetic material twice during cell division

Explanation:

All multicellular organisms use cell division for growth and the maintenance and repair of cells and tissues. Single-celled organisms use cell division as their method of reproduction. Somatic cells contain two copies of each of their chromosomes (one copy from each parent).

Answer:

Cell division results in reproduction in single-celled organisms. The correct option is D.

Explanation:

Single celled organism which are equally known as unicellular organisms are organisms which are made up of one cell. Due to the simplicity of the structure of these organisms, reproduction can be achieved through cell division.

Multicellular organisms as the name implies is made up of multiple cells,unlike unicellular organisms, which are to varying degrees integrated and independent.

Every cell is produced through cell division.

Cell division results to reproduction in single-celled organisms while cell division aids in the formation of gametes, which are cells that combine with others to form sexually produced offspring. It is also responsible for the development of a multi-celled organism from a single fertilised egg cell.

the answer is c i think

Answer:

C. Planets in motion will have a constant speed unless acted on by an outside force.

Explanation:

Took the test

To determine the range of frequencies of which the continuous time signal is not equal to zero, you need to provide the actual signal.

Without the signal, it is not possible to determine the range of frequencies of the signal that is not equal to zero. However, in general, if the signal is periodic, then it can be expressed as a sum of sinusoids using Fourier series.

The range of frequencies of the signal that are not equal to zero can be determined from the Fourier series coefficients of the signal. The Fourier series coefficients give information about the amplitude and phase of each sinusoidal component in the signal.

For a non-periodic signal, the Fourier transform can be used to analyze the frequency content of the signal.

The Fourier transform gives a continuous spectrum of frequencies that make up the signal. The range of frequencies of the signal that are not equal to zero can be determined from the Fourier transform of the signal.

In summary, the specific signal is required to determine the range of frequencies at which it is not equal to zero. If it's a periodic signal, the range of frequencies of the signal can be obtained from the Fourier series coefficients while for a non-periodic signal, the Fourier transform can be used to determine the frequency content of the signal.

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The correct option is B: The tension on the aluminum wire is approximately 65 N.

To find the tension on the aluminum wire, we can use the formula for the speed of transverse waves in a string:

v = √(T/μ)

where:

v = speed of transverse waves

T = tension in the wire

μ = linear mass density (mass per unit length) = density * area

First, let's calculate the area of the aluminum wire:

Given diameter = 4.6 mm

Radius = diameter/2 = 4.6 mm / 2 = 2.3 mm = 2.3 x \(10^(^-^3^)\) m

Area = π * \(r^2\)

      = π * (2.3 x 10⁽⁻³⁾)²

      = π * (5.29 x 10⁽⁻⁶⁾)

      ≈ 1.658 x 10⁽⁻⁵⁾ m²

Now, let's calculate the linear mass density (μ):

Density of aluminum = 2700 kg/m³

Linear mass density (μ) = density * area

                       = 2700 kg/m³ * 1.658 x 10⁽⁻⁵⁾ m²

                       ≈ 0.0447 kg/m

Now, we can rearrange the formula for the speed of transverse waves to solve for tension (T):

T = μ * v²

Given v = 38 m/s and μ = 0.0447 kg/m, we can calculate T:

T = 0.0447 kg/m * (38 m/s)²

 ≈ 63.9906 N

Rounding to the nearest whole number, the tension on the wire is approximately 64 N.

Therefore, the closest option from the given choices is: b) 65 N

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Answer:

2

Explanation: the graph shows it as the point with the most shadow, Also got it right on edgeunity

Answer:

2

Explanation: did it on edg 2020

Answer:

Projectile motion is the motion of an object thrown or projected into the air, subject to only the acceleration of gravity. The object is called a projectile, and its path is called its trajectory. The motion of falling objects, as covered in Problem-Solving Basics for One-Dimensional Kinematics, is a simple one-dimensional type of projectile motion in which there is no horizontal movement. In this section, we consider two-dimensional projectile motion, such as that of a football or other object for which air resistance is negligible.

Explanation:

B the dropped ball

Unless the incident light is moving through the more optically dense material toward the less optically dense medium, the total internal reflection will not occur.

Light moving from water to air will have TIR, but light traveling from air to water will not. If the incidence angle exceeds a specific limitation angle known as the critical angle, the phenomenon will manifest.

The angle of incidence of the light must be greater than the critical angle and it must be traveling from a more dense medium into a less dense media (i.e. glass to air). Light speeds up and changes direction when it passes through water or glass at an angle and enters the atmosphere. Turning away from the usual line, the light.

Some light is reflected off the water when it comes into contact with light that is flying through the air. While the remaining light travels through the water, it bends (or refracts) as it does so.

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Answer:

Cold temps. . .

Explanation:

Hope it helps!

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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Answer:

the answer to this would be D.

Answer: Its D but it might swap to another letter so keep your eye out bud pass this test good luck

Explanation:

Answer:

20 m/s

Explanation:

Acceleration = Change in velocity/ time

4 = Change in Velocity/ 5

Change in velocity = 20 m/s

Following the image of the ball that have been shown;

1. Potential energy

2. Kinetic energy

3. Kinetic energy

4. Potential energy

5. Kinetic energy

6. Kinetic energy

7. Kinetic energy

Due to its position or elevation, an object has potential energy while it is at rest or is elevated above the ground. Depending on the circumstances, this potential energy may either be elastic or gravitational.

Kinetic energy, or the energy connected to motion, is present when an item is in motion. An object's kinetic energy is determined by its mass and velocity .

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Answer:

1: Potential and kinetic

2: Potential and kinetic

3: Potential and kinetic

4: potential

5: Potential and kinetic

6: Potential and kinetic

7: NEITHER

Explanation:

4 is potential because its the highest point

7 is neither because the question states "the image shows the path of a ball from the time it's thrown to the time it lands on the ground" so... 7 is when the ball has landed on the ground. therefore it has neither potential nor kinetic because it is resting.

Answer:

The pressure inside the dropper is same as the atmospheric pressure when the rubber bulb is not pressed. ... But when we press the rubber bulb the pressure inside the dropper increases and hence the water flows out.  Atmospheric pressure acting from outside the dropper balances the pressure exerted by water and water does not come out of a dropper. On pressing the dropper inside pressure of water becomes more than outside atmospheric pressure and water run out. When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper.

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The magnitude of the vector B is 42 units in the negative Y- direction, if it is added to a vector A of 24 units and giving resultant vector of 18 units.

Vector A magnitude, = 24 units

As it is perpendicular the x-axis so, x = 0

So the co-ordinate of the vector A head will be = (0, 24)

Resultant vector magnitude, = -18 units

As it is perpendicular the x-axis so, x = 0

So the co-ordinate of the vector A head will be, R = (0, -18)

A + B = R

B = R - A

B = -18 - 24

B = -42

The coordinate of the vector B, = (0, -42)

A negative sign indicates that the direction of the vector will be along the y-negative axis.

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Answer:

The value is \(\sigma = 8.88*10^{6} \ C\cdot m^2 / V \cdot s\)

Explanation:

From the question we are told that

   The mobility of electron in a tiny room is  \(\mu = 1.5 *10^{-3} \ (m/s)/(V/m)\)

  The number of mobile electron per \(m^3\) is  \(N = 3.7 *10^{28}\)

  Generally the conductivity is mathematically represented as

        \(\sigma = N * e * \mu\)

Here  \(e\) is the charge on a single electron and that value is  

       \(e = 1.60 *10^{-19 } \ C\)

So

          \(\sigma = N * e * \mu\)

=>       \(\sigma = 3.7 *10^{28 } * 1.60 *10^{-19} * 1.5 *10^{-3}\)

=>     \(\sigma = 8.88*10^{6} \ C\cdot m^2 / V \cdot s\)

The first one is based on the fundamental definition of velocity that employs the widely used velocity equation.

The second approach determines the amount of velocity change brought on by acceleration over a given period of time.

Finally, the average velocity formula is used in the third section of the velocity calculator, which may be helpful if you need to examine trips with varying speeds across different distances.

According to the definition of velocity, it is the rate at which an object's position changes over time. Consideration of body motion is one of the fundamental ideas in classical mechanics.

Therefore, The first one is based on the fundamental definition of velocity that employs the widely used velocity equation.

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An ecosystem has a single path of energy flow. Plants absorb energy from the sun, which is then transferred to organisms that eat plants, which are then transferred to organisms that eat those organisms, and so on. An ecosystem as a whole experiences a straight, unidirectional flow of energy as a result.

Sunlight is converted into chemical energy or food by producers. When consumers eat producers, they absorb some of that energy. When eaten, they also transfer some of their energy to other consumers. Energy moves from one living creature to another in this way.

According to the Law of Conservation of Energy, energy cannot be created or destroyed.

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Answer:

The question does not state how the answer is to be entered. I would use 10% because that is most common.

Explanation:

You are using 300 J of energy to get 30 J of light energy. The fact that you can account for the left over energy is not relevant.

Efficiency = Work Out / Work In

Efficiency = 30 J / 300 J  = 0.1

If you need this as a %, you can multiply by 100

Efficiency = 0.1 * 100 = 10%

The  combustion equation violates the law of conservation of matter is C₃H₈ + 6 O₂ --> 3 CO₂ + 4 H₂O; option D

The law of conservation of matter is a law that explains the changes that matter undergoes.

The law of conservation of matter states that matter cannot be created nor destroyed but can change from one form to another.

The law of conservation of matter is important in chemical reactions as it helps in the balancing of chemical equations to ensure that the mass of reactants and products are equal at the end of the reaction.

Considering the given reactions:

A. 2 C₆H₁₄ + 19 O₂ --> 12 CO₂ + 14 H₂O

mass of reactants equal to the mass of products

B. 2C₈H₁₈ + 25 O₂ --> 16 CO₂ + 18 H₂O

mass of reactants equal to the mass of products

C. CH₄ + 2 O₂ --> CO₂ + 2 H₂O

mass of reactants equal to the mass of products

D. C₃H₈ + 6 O₂ --> 3 CO₂ + 4 H₂O

mass of reactants is not equal to the mass of products

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The potential difference when a charge goes from 10m to 16m is approximately -1.6875 x \(10^9\) V. The negative sign indicates a decrease in potential as the charge moves farther away from the uniformly charged shell.

To calculate the potential difference between two points, we can use the formula:

V = k * (Q / r)

V is the potential difference

k is the electrostatic constant (k = 9 x \(10^9 N m^2/C^2\))

Q is the charge

r is the distance

In this case, the charge (Q) is 5C and the distances (r) are 10m and 16m.

First, let's calculate the potential at the initial point (10m):

V_initial = k * (Q / r_initial)

V_initial = (9 x \(10^9 N m^2/C^2\)) * (5C / 10m)

V_initial = 4.5 x \(10^9\) V

Next, let's calculate the potential at the final point (16m):

V_final = k * (Q / r_final)

V_final = (9 x \(10^9 N m^2/C^2)\) * (5C / 16m)

V_final = 2.8125 x\(10^9\) V

Finally, we can calculate the potential difference (ΔV) between the two points:

ΔV = V_final - V_initial

ΔV = 2.8125 x \(10^9\) V - 4.5 x\(10^9\) V

ΔV = -1.6875 x \(10^9\) V

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When electromagnetic radiation is Doppler-shifted by motion away from the detector, the observed wavelength increases.

When an object emitting electromagnetic radiation, such as light, is moving away from an observer (detector), the wavelengths of the observed radiation are stretched or increased.

This phenomenon is known as the Doppler shift. It occurs because the motion of the source affects the perceived frequency or wavelength of the radiation. When the source is moving away, the observed wavelength is longer compared to the emitted wavelength.

This effect can be observed in various contexts, such as the redshift observed in the light from distant galaxies, indicating their recession from us due to the expansion of the universe.

Additionally, it is relevant in understanding the behavior of stars, galaxies, and other astronomical objects. By analyzing the Doppler shift, scientists can infer important information about the motion and velocity of celestial objects.

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Centripetal refers to “center-seeking” Quantifies the change in directionof the velocity The acceleration is directed toward the center of the circle of motion.

The magnitude of the centripetal acceleration is given by V^2/r, the direction is toward the center of the circle. The tangential component of the acceleration is due to changing speed. The centripetal component of the acceleration is due to changing direction.

When an object is rotating at a constant angular velocity, the whole object has a constant angular velocity. Therefore, every mint on the turntable has the same, constant angular velocity.

The acceleration which causes the tangential velocity to change direction is called Centripetal acceleration. Centripetal acceleration is always in toward the center of the circle.

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On the reactance circuit, Frequency (f) and angular frequency (w) are related by the equation: w = 2πf. If the angular frequency of the circuit is very large, the circuit is changing rapidly.

1) Frequency (f) and angular frequency (w) are related by the equation: w = 2πf, where π is the mathematical constant pi (approximately 3.14). This means that angular frequency is equal to 2π times the frequency of the circuit.

2) If the angular frequency of the circuit is very large, the circuit is changing rapidly. This is because angular frequency is a measure of how quickly the circuit is oscillating or alternating.

3) Given a capacitor of fixed capacitance C, in a circuit with a very large angular frequency, Xc is small. This is because the reactance of a capacitor is inversely proportional to frequency, so as the frequency increases, the reactance decreases. Therefore, at very high frequencies, the capacitor behaves more like a short circuit, and Xc approaches zero.

4) Given a capacitor of fixed capacitance C, in a circuit with a very large angular frequency, current flows quickly in the circuit. This is because the reactance of the capacitor is very small at high frequencies, so the capacitor essentially acts like a wire, allowing current to flow easily through the circuit.

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