Can someone check my answers? If I’m incorrect can you correct me? Thank you. Image below.

Answer:

Explanation:

The electric flux through a surface is given by the dot product of the electric field and the area vector of the surface:

Φ = E · A

where Φ is the electric flux, E is the electric field, and A is the area vector of the surface.

(a) If the surface lies in the yz plane, its area vector is in the x direction. Therefore, the area vector can be written as A = Ax i, where Ax is the magnitude of the area. The electric field is given as E = ai + bj. Therefore, the flux through the surface is:

Φ = E · A = (ai + bj) · (Ax i) = aAx

(b) If the surface lies in the xz plane, its area vector is in the y direction. Therefore, the area vector can be written as A = Ay j, where Ay is the magnitude of the area. The electric field is given as E = ai + bj. Therefore, the flux through the surface is:

Φ = E · A = (ai + bj) · (Ay j) = bAy

(c) If the surface lies in the xy plane, its area vector is in the z direction. Therefore, the area vector can be written as A = Az k, where Az is the magnitude of the area. The electric field is given as E = ai + bj. Therefore, the flux through the surface is:

Φ = E · A = (ai + bj) · (Az k) = 0

since the dot product of perpendicular vectors is zero.

Answer:

Base on my experience the answer is True...

Answer: True

Explanation:

The statement that accurately describes the universal gravitational law is (option C) As the distance between any two bodies increases, the gravitational force between them decreases.

The universal gravitational law, also known as Newton's law of universal gravitation, is a fundamental law of physics that describes the gravitational attraction between two objects with mass. The law states that:

Every object in the universe attracts every other object with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This means that the gravitational force between two objects decreases as the distance between them increases.

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The US city that regularly experiences the worst levels of photochemical smog that is enhanced by thermal inversions is Los Angeles.

Photochemical smog is a type of smog that is formed when pollutants in the air react with sunlight. It can cause health problems such as respiratory issues, eye irritation, and headaches.Thermal inversion occurs when a layer of warm air traps pollutants near the ground, preventing them from dispersing.

This can exacerbate the effects of photochemical smog.Los Angeles is known for its high levels of air pollution, including photochemical smog.

The combination of heavy traffic, industrial activity, and the surrounding mountains that trap pollutants in the area can contribute to the city's poor air quality. Additionally, the city's warm, sunny climate can create conditions that enhance the effects of photochemical smog.

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Answer:

The strength of the magnetic field created by current is:

B=μ₀I / 2 π R

where I is the current

R is the shortest distance to the wire

The constant μ₀ is 4π * 10^-7 T * m / s

Explanation:

The correct option is A, If the length of the crank was doubled, you could pull up the water with the same work, but less force.

The term "crank" can have various meanings depending on the context. In the context of machinery or engines, a crank is a mechanical device that converts rotational motion into linear motion or vice versa. It typically consists of a rod with a crankpin that connects to a piston or other reciprocating part.In a different context, the term "crank" can refer to a person who holds unconventional or extreme views and insists on expressing them in a forceful or annoying way.

Such a person may be described as a "crank" or "crankpot." The term can also refer to someone who is mentally unbalanced or eccentric. Furthermore, in the context of illegal drugs, "crank" is a slang term for methamphetamine, a highly addictive stimulant that can cause serious health problems and addiction. It is usually sold in crystalline form and can be smoked, snorted, or injected.

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Complete Question: -

You are pulling water with a constant velocity from a well using a crank of lengthL . If the length of the crank was doubled, you could ...

A: pull up the water with the same work, but less force

B: pull up the pail with half the number of revolutions

C: exert double the torque while pulling up the pail with half the work

D: pull up the pail with half the work and half the force

E: pull up double the amount of water with the same work

F: exert four times the torque while pulling up the pail with the same work

The  spring constant is 400 N/m. For the given question.

What is spring constant ?

The spring constant (k) is a physical property of a spring, which represents the stiffness of the spring. It is defined as the force required to stretch or compress a spring by a certain amount (x) divided by that amount of deformation:

k = F/x

where F is the applied force and x is the displacement or deformation of the spring from its equilibrium position. The spring constant has units of force per unit of length, such as newtons per meter (N/m) in the SI system of units. A higher spring constant means that more force is required to deform the spring by the same amount, and the spring is considered to be stiffer. Conversely, a lower spring constant means that less force is required to deform the spring by the same amount, and the spring is considered to be more flexible.

We can use the conservation of energy to find the spring constant.

Initially, the box has kinetic energy given by:

K₁= (1/2)mv₁²

= (1/2)(4.0 kg)(3.0 m/s)²

= 18 J

At maximum compression, all of the kinetic energy is stored as potential energy in the spring. The potential energy stored in a spring is given by:

U = (1/2)kx²

where k is the spring constant and x is the displacement from the equilibrium position. In this case, x is the compression of the spring, which is 0.30 m.

So, the potential energy stored in the spring is:

U = (1/2)kx²

= (1/2)k(0.30 m)²

= 0.045k J

Since energy is conserved, we can equate the initial kinetic energy to the potential energy stored in the spring:

K₁= U

18 J = 0.045k J

k = 400 N/m

Therefore, the spring constant is 400 N/m.

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When the Kelvin temperature of an object is doubled, the amount of radiant energy emitted each second is E.  16 times the original amount.

The amount of energy emitted by a body of the Kelvin temperature varies according to the fourth power of its absolute temperature, according to Stefan's law. Radiant energy is emitted by a heated object because of the vibration of its particles. As a result, as the temperature of the body rises, so does the energy emitted from it. The energy radiated by a body is directly proportional to the temperature raised to the fourth power.

Therefore, the amount of energy radiated by a body is proportional to the fourth power of its absolute temperature, according to Stefan's law. Suppose the initial temperature of the object is T and the energy emitted per second is E. If the temperature of the object is doubled, the new temperature will be 2T. As a result, the amount of energy radiated by the object each second (E') would be calculated by: E' = E(2T /T )4E' = E(16)The amount of radiant energy emitted each second is 16 times the original amount when the Kelvin temperature of an object is doubled.

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Draw the complete cycle of the wave by repeating the pattern of the peak, the equilibrium position, and the trough, with a distance of λ between each consecutive peak or trough. The number of cycles per second, or the frequency, should be 5.0 hertz.

What is Wave?

A wave is a disturbance that propagates through space and time, often transferring energy from one location to another without the physical transfer of matter. Waves can take many different forms, including sound waves, electromagnetic waves, and mechanical waves.

Draw a horizontal axis representing time, labeled in seconds or milliseconds.

Draw a vertical axis representing displacement or amplitude, labeled in centimeters or meters.

Choose a starting point for the wave, which represents the equilibrium position of the medium.

Draw the peak of the wave, which represents the maximum displacement of the medium from its equilibrium position. This should be 4.0 centimeters above the equilibrium position.

Draw the trough of the wave, which represents the minimum displacement of the medium from its equilibrium position. This should be 4.0 centimeters below the equilibrium position.

Determine the wavelength of the wave, which is the distance between two consecutive peaks or troughs. This can be calculated using the formula λ = v/f, where λ is the wavelength, v is the velocity of the wave, and f is the frequency. For a transverse wave on a string, the velocity is given by v = √(T/μ), where T is the tension in the string and μ is the linear mass density of the string.

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Answer:

see attachment

Explanation:

The maximum number of electrons in any shell is given by formula 2n² , where n is the number of shell .So in first shell , 2(1)² = 2 electrons would be accommodated.

Similarly in second shell , 2(2)² = 8 electrons would be accommodated .

Similarly we can find out the maximum number of electrons in 3rd , 4th and 5th shell .

The maximum number of electrons in valance shell is 8 .

Also, atomic numbers of ,

and we are done!

The theoretical efficiency of a Diesel engine with a compression ratio of 18 and a cutoff ratio of 2 is 0.94.

The efficiency of the Diesel cycle, denoted by η, can be expressed as a function of the compression ratio (r)
and the cutoff ratio (r_c)
as follows:
[tex]η = 1 - 1/(r^(r_c-1))[/tex]
This equation shows that as the compression ratio increases, the efficiency of the Diesel cycle increases.
When comparing the efficiency of the Diesel cycle to that of the Otto cycle, it can be seen that for a given compression ratio, the Diesel cycle is less efficient than the Otto cycle. To evaluate the theoretical efficiency of a Diesel engine with a compression ratio of 18 and a cutoff ratio of 2, we can use the equation above to calculate the efficiency as:
[tex]η = 1 - 1/(18^(2-1))[/tex]
η = 1 - 1/18
η = 0.94
Therefore, the theoretical efficiency of a Diesel engine with a compression ratio of 18 and a cutoff ratio of 2 is 0.94.

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Answer:

Explanation:

The centripetal acceleration of the race car is given by the formula:

a = v^2 / r

where v is the speed of the race car and r is the radius of the turn.

Substituting the given values, we get:

a = (27.5 m/s)^2 / 57.0 m = 13.3 m/s^2

So the centripetal acceleration of the race car is 13.3 m/s^2.

To find the coefficient of friction, we need to use the formula:

f = μN

where f is the force of friction, μ is the coefficient of friction, and N is the normal force.

The normal force is equal to the weight of the car, which we can calculate as:

N = mg

where m is the mass of the car and g is the acceleration due to gravity (9.81 m/s^2).

Assuming the mass of the car is 1500 kg, we get:

N = 1500 kg × 9.81 m/s^2 = 14,715 N

The force of friction is equal to the centripetal force required to keep the car moving in a circle:

f = ma = (1500 kg)(13.3 m/s^2) = 19,950 N

Substituting the values of N and f into the formula for friction, we get:

19,950 N = μ(14,715 N)

Solving for μ, we get:

μ = 1.35

So the coefficient of friction is 1.35.

The missing piece for the energy transformation for a flashlight is "Light" or "Radiant" energy. Chemical > Electrical > light & Thermal

Energy transformation is also known as energy conversion. It is the process of changing energy from one form to another. In physics, energy is a quantity that provides capacity to perform work or moving or provides heat.

The complete energy transformation for a flashlight is as :

Chemical (stored in the battery) > Electrical (when the battery powers the bulb) > Light/Radiant (when the bulb emits light) & Thermal (some of the energy is lost as heat due to resistance in the bulb and the circuit).

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The frequency of the water wave is 0.4Hz (option B).

Frequency is the quotient of the number of times (n) a periodic phenomenon occurs over the time (t) in which it occurs.

The frequency of a wave can be calculated by dividing the number of occurrence by time as follows;

f = n/t

Where;

According to this question, an observer counts 4 complete water waves passing by the end of a dock every 10 seconds. The frequency can be calculated as follows:

f = 4/10

f = 0.4Hz

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Answer:

Explanation:

Adding other substances to the water besides salt, such as sugar or baking soda, would introduce confounding variables into the experiment. Other factors that could introduce confounding variables include using different volumes of water, using different amounts of salt, and heating the water at different rates. To minimize confounding variables, it is important to keep all variables constant except for the one being tested, which in this case is the effect of salt on the boiling point of water.

(a) The impulse between the marble and the floor is -3.23 Ns.

(b) The average force F between the marble and the floor is -32.3 N.

We can use the principle of conservation of energy to find the velocity of the marble just before it hits the ground:

Initial potential energy = mgh = 0.1 kg × 9.8 m/s² × 40 m = 39.2 J

Final kinetic energy = (1/2)mv²

39.2 J = (1/2) × 0.1 kg × v²

v = √(2 × 39.2 J / 0.1 kg) = 88.4 m/s

When the marble hits the ground, it experiences a force due to the floor that changes its momentum. The impulse J of this force can be calculated as:

J = Δp = mΔv

where;

The change in velocity is given by:

Δv = vf - vi

where;

We know that vi = 88.4 m/s, and we can find vf using the conservation of energy principle again:

Final potential energy = mgh = 0.1 kg × 9.8 m/s² × 10 m = 9.8 J

Initial kinetic energy = (1/2)mv² = (1/2) × 0.1 kg × (88.4 m/s)² = 389.8 J

389.8 J = 9.8 J + (1/2)mvf²

vf = √(2 × (389.8 - 9.8) J / 0.1 kg) = 56.1 m/s

Therefore, the impulse is:

J = mΔv = 0.1 kg × (56.1 m/s - 88.4 m/s) = -3.23 N·s

The negative sign indicates that the impulse is in the opposite direction to the initial velocity.

The average force F between the marble and the floor can be found using the formula:

F = J / Δt

where;

In this case, Δt = 0.1 s, so:

F = J / Δt = (-3.23 N·s) / 0.1 s = -32.3 N

Again, the negative sign indicates that the force is in the opposite direction to the initial velocity.

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The induced emf by the formula that we have can be obtained as 4.3 * 10^-4 V.

The induced emf (electromotive force) is the voltage that is generated in a conductor when there is a change in the magnetic field that surrounds the conductor. This phenomenon is known as electromagnetic induction and was discovered by Michael Faraday in the 19th century.

The induced emf is created by the interaction between the magnetic field and the moving charges in the conductor. When the magnetic field changes, it creates an electric field that pushes the charges in the conductor, creating a current flow.

Using emf = NAdB/dt

= 20 * (0.16)^2 *  8.4 × 10-4 T/s

4.3 * 10^-4 V

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The Delta t and Delta x between the events E1 and E2 in the frames of A, B, and C, and show that c2 Delta t2 - Delta x2 is the same in all three frames. The Space time interval in all frames is [tex]\frac{144}{25}L^2[/tex].

In the following we will find out the time interval and space interval between the two events E1 and E2 with respective to  A, B and C.

Simultaneously we will find out space time interval in each case and finally show that they are the same.



In the frame of reference of C

The time interval is the time it takes for ( to Cover the contracted length of B.

with respect to C, B will have a relative velocity Ux' = (-5/13)C  (we had already found out it.Only the sign changes)

Then the contrasted length of B with respect to C.

would be L' =  [tex]L\sqrt{1 - \frac{Ux^2}{C^2}} = L\sqrt{1 - \frac{25}{169}}[/tex]

L' = (12/13)L

So dt = L'/un\x' =(12/13)L / (-5/13)C = (12/5)(L/C)

dx =0 as E1, and E2 occurs at the same point with respect to C. Now space time Interval is Cdt^2 = dx^2 =

[tex]C^2 \frac{144}{25}\frac{L^2}{C^2}-0 = \frac{144}{25}L^2[/tex]

The quantity of time between two given instances is referred to as time interval. In other words, it is the amount of time that has surpassed among the beginning and end of the event. it is also called elapsed time. interval of time is measured in special units. every unit describes a one of a kind quantity of time. some units are better appropriate to specific durations of time.

As an instance, if you were baking a cake within the oven, you will select to measure the time in minutes or perhaps in hours. in case you were calculating the time on your birthday from a particular date, you will choose to measure the time in days, weeks, or months (relying on how far away it became).

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The safety curtain needs to be loosely draped so that it will move easily with the movement of the actors. This will prevent any potential safety hazards from occurring, such as the curtain becoming stuck or snagging on any props or scenery.

Additionally, it is important for the curtain to not be too tight as this could prevent it from falling properly.
The safety curtain needs to be loosely draped so that it can fall easily in case of an emergency.What is a safety curtain?A safety curtain is a fire-resistant metal or asbestos curtain that is suspended above the stage of a theater. In the case of a fire, the curtain is designed to descend quickly and close off the stage area, preventing flames from spreading to the auditorium and providing an escape route for the actors and stage crew.

In the case of an emergency, the safety curtain must drop down without difficulty. That is why the safety curtain must be loosely draped. The safety curtain is supported by a counterweight and a rope system that is positioned over the stage's proscenium arch.

The safety curtain, for example, is used in theatres to protect the audience in the event of a fire. It's also used as a barrier between the stage and the audience. A fire-resistant cloth or metal shutter that, in the event of a fire, may be lowered to cut off the stage from the rest of the theatre is known as a safety curtain.

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Answer:

the wavelength will decrease

Explanation:

If the frequency of a wave increases, the wavelength will decrease. This is because the speed of the wave is constant for a given medium, so if the frequency (the number of waves passing a fixed point per second) increases, then the distance between successive wave crests (i.e., the wavelength) must decrease to maintain a constant speed. This relationship is described by the wave equation:

v = f λ

where v is the speed of the wave, f is the frequency, and λ is the wavelength. If v is constant and f increases, then λ must decrease to keep the equation balanced.

As the ball is thrown upward at an angle, the vertical component of its velocity will decrease as it rises and increase as it falls. This is because of the gravitational force which acts in the opposite direction.

The vertical component of the velocity decreases as the ball rises and increases as the ball falls back to the ground. When an object is thrown upward, it has an initial velocity composed of both a horizontal and a vertical component. The horizontal component of the velocity is constant, while the vertical component of the velocity changes due to the force of gravity.

The vertical component of the velocity decreases as the ball rises due to the force of gravity. When the ball reaches its maximum height, the vertical component of the velocity is zero. As the ball falls back to the ground, the vertical component of the velocity increases due to the force of gravity until it reaches its maximum velocity just before hitting the ground.

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The correct option is d has less speed and greater pressure.

How water flow?

Water flows through a combination of gravity and pressure. The movement of water is caused by the force of gravity, which causes water to flow downhill from higher to lower elevations. When water is pumped or forced through a system, pressure is added to the water, causing it to flow in the desired direction.

Water flows through a system of pipes, hoses, or channels, depending on the application. The velocity of water flow depends on various factors, including the diameter of the pipe or channel, the amount of water being pumped or released, and the pressure of the system.

In addition to gravity and pressure, other factors can affect the flow of water, including friction, viscosity, and turbulence. Understanding these factors is essential for designing efficient water systems that can deliver water where it is needed, such as in homes, farms, and cities.

Based on the diagram, the water at point 2 has a greater height than point 1, so it has a higher gravitational potential energy. Therefore, the water at point 2 must have a lower kinetic energy than point 1. Since the kinetic energy of water is related to its speed, we can conclude that the water at point 2 has less speed than point 1.

However, since the water is being pumped from a lower level to an upper level, it means that energy is being added to the system, which increases the pressure of the water. Therefore, the water at point 2 has a greater pressure than point 1.

Thus, the correct option is d) has less speed and greater pressure.

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Given the fact that the linear velocity of the ball is tangential to the circle then it is shown by vector B

When a ball flies out of a circular path, the direction of its tangential velocity is tangent to the point at which it leaves the circular path.

To visualize this, imagine a ball tied to a string and whirled around in a circle. As the ball is released, it will move away from the center of the circle in a straight line. At the moment it leaves the circular path, its velocity vector will be tangent to the circle, pointing in the direction of its motion.

If the ball is flying out of the circle in a clockwise direction, then its tangential velocity vector will point to the right. If it is flying out of the circle in a counterclockwise direction, then its tangential velocity vector will point to the left.

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The potential difference across C4 can be found using the equation V = V4 - V3. Using the given values, V = 12.0V, C1 = 3.0 ?F, C2 = 2.0 ?F, C3 = 2.0 ?F, C4 = 1.0 ?F, and C5 = 4.0 ?F, we can solve for V4.

V4 = 12.0V + (3.0 ?F + 2.0 ?F + 2.0 ?F + 1.0 ?F) / (1.0 ?F + 4.0 ?F)
V4 = 12.0V + (8.0 ?F / 5.0 ?F)
V4 = 12.0V + 1.6V
V4 = 13.6V
Therefore, the potential difference across C4 is 13.6V - 12.0V = 1.6V.
The potential difference across C4 can be determined using the formula Q = CV. Where Q represents the charge stored in the capacitor, C represents capacitance, and V represents the potential difference across the capacitorTo determine the potential difference across C4, we can use the formula Q = CV. To determine Q, we need to determine the equivalent capacitance of the circuit.

The equivalent capacitance of capacitors in parallel is equal to the sum of their capacitance. The equivalent capacitance of capacitors in series is equal to the reciprocal of the sum of their reciprocals.C1, C2, and C3 are in series, and their equivalent capacitance is given by:C_eq1=1/((1/C1)+(1/C2)+(1/C3))=1/(1/3+1/2+1/2)=3/7 μF{C_eq1=1/((1/C1)+(1/C2)+(1/C3))=1/(1/3+1/2+1/2)=3/7μF}C_eq2 is the equivalent capacitance of C4 and C5 in parallel.C_eq2=C4+C5=1+4=5μF {C_eq2=C4+C5=1+4=5μF}

Now we can determine the equivalent capacitance of the entire circuit.C_eq=C_eq1+C_eq2=3/7+5=38/7μF{C_eq=C_eq1+C_eq2=3/7+5=38/7μF}Now, we can determine the charge stored in the circuit.Q=C_eqV=38/7*12= 65.14μC{Q=C_eqV=38/7*12=65.14μC}To determine the potential difference across C4, we can use the formula Q = CV.V=C4Q/C4= 65.14/1 = 65.14V{V=C4Q/C4=65.14/1=65.14V}Therefore, the potential difference across C4 is 65.14 V.

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The work done by w is 22491 J.

The work done by Ti is 10728 J.

we have to determine the amount of work done by w. We can use the formula

W = Fd,

where W is the work done, F is the force applied, and d is the distance over which the force is applied.

The mass of the piano is given as 255 kg, and it is lowered exactly 9 m from the second-story window to the ground.

We can calculate the force required to lower the piano using the formula

F = mg,

where m is the mass of the piano and g is the acceleration due to gravity.

Therefore, [tex]F = 255 kg x 9.8 m/s^2 = 2499 N.[/tex]

Using the formula for work, we can calculate the work done by w as follows:

W = Fd = 2499 N x 9 m = 22491 J

we have to determine the amount of work done by Ti. We are given the magnitude of two forces, 1830 N and 1295 N, and the angle between them is 60°.

We can find the resultant force using the law of cosines, which states that

[tex]c^2 = a^2 + b^2 - 2ab cos(C),[/tex]

where c is the length of the side opposite the angle C and a and b are the lengths of the other two sides.

Therefore, [tex]c = sqrt(a^2 + b^2 - 2abcos(C)) = sqrt((1830 N)^2 + (1295 N)^2 - 2(1830 N)(1295 N)cos(60°)) = 2159 N.[/tex]

The angle between the resultant force and the horizontal is 45°, so we can calculate the work done by Ti using the formula

W = Fd cos(theta),

where theta is the angle between the force and the direction of motion.

Therefore, W = 2159 N x 7 m x cos(45°) = 10728 J.

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If this Doppler shift is due to the Sun rotating (try drawing a diagram), then  2km/s is the rotational speed of the Sun at its equator.

According to relation; of doppler shift:-

Velocity of rotation = ((observed wavelength / rest wavelength ) -1) x speed of Light

Here Observed wavelength = 486-0.0033 = 485.9967.m

and, Rest wavelength- 486 nm.

So, velocity=

((485.9967/486) - 1) x 299792.458 m/s

So, velocity = -2.035 km/s or Just 2km/s.

Doppler shift has important applications in astronomy, where it is used to determine the motion of celestial objects, such as stars and galaxies, and to measure their distance from Earth. It results in a change in the frequency of the observed waves, as perceived by the observer.

When the source of waves is moving towards the observer, the waves are compressed, and their frequency appears to be higher than their actual frequency. This is called a blue shift. Conversely, when the source is moving away from the observer, the waves are stretched, and their frequency appears to be lower than their actual frequency. This is called a red shift. It is also used in radar technology, where it is used to determine the speed and direction of moving objects, such as airplanes and vehicles.

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Complete Question:-

An astronomer observing the spectrum of the Sun finds that the Hydrogen-ß spectral line (λ = 486 nm) on the solar equator at one edge of the Sun's disk is blueshifted by 0.0033 nm compared to the same line at the center of the Sun's disk and is redshifted by the same amount on the equator at the other side of the Sun's disk. If this Doppler shift is due to the Sun rotating (try drawing a diagram), then what is the rotational speed of the Sun at its equator?

The sound will get louder and the amplitude will rise. The separation between compressions in a sound wave indicates that the wave's wavelength has grown.

When particles travel in close proximity to one another, compression occurs, creating areas of intense pressure. In contrast, when particles are separated from one another in low-pressure locations, rarefactions take place. As the tines of a vibrating tuning fork move back and forth, compressions and rarefactions are produced.

Compressions and rarefactions are terms used to describe where a medium's particle distribution spreads out farther from one another.

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The increase in energy can come from increases in work.

The mass of the ball at a height of 3m above the ground with a potential energy of 120J can be calculated using the equation:

Mass = Potential Energy/Gravity * Height

Mass = 120J/(9.81m/s² * 3m)

Mass = 4.1 kg

Answer:

4 kg

Explanation:

Using,

Energy/ Work done = Force x Distance (Height)

E = F • s

But recall, that F = mg

Therefore,

E = m • g • s

Making mass (m), the subject of the formula

m = E / (g • s)

m = 120 / (10 • 3)

m = 120 / 30

m = 4 kg

But if g = 9.8 ms-¹

Then,

m = 120 / (9.8 • 3)

m = 120 / 29.4

m = 4.08 kg

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