Answer:
in a magnet there is a magnetic field that draws ever mental to it
Select the correct answer from each drop-down menu.
Rocky metallic objects found between the orbits of Mars and Jupiter are(drop down). The largest known of these is(drop down).
Answer:
Blank 1 (asteroids)
Blank 2 (Ceres)
Explanation:
Rocky metallic objects found between the orbits of Mars and Jupiter are asteroids The largest known of these is ceres.
What are asteroids?Asteroids are stony elements that circle the Sun. Although asteroids circle the Sun in the same way as planets, they are considerably smaller.]
A dwarf planet located between Mars and Jupiter in the asteroid belt. Ceres was the first asteroid discovered, it was originally classed as a planet,
Rocky metallic objects found between the orbits of Mars and Jupiter are asteroids The largest known of these is ceres.
The correct option from the drop-down menu is asteroids and ceres.
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5. Two equal charges are situated in a vacuum 10.0cm apart, if they repel each other with a force of 0.5N, calculate the value of the charge on each. [4π)¹ = 9.0 x 10⁹ I
The value of the charge on each particle is \(1.05 x 10^-8 C\).
What is Coulomb's law?Coulomb's law is a fundamental principle of electrostatics that describes the interaction between electric charges. It states that the force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. We can use Coulomb's law to solve this problem. Mathematically,
\(F = k(q1q2)/r^2\)
where F is the force of attraction or repulsion between the two charged particles,\(q1\) and \(q2\) are the magnitudes of the charges on the two particles, r is the distance between them, and k is Coulomb's constant, which has a value of \(9.0 x 10^9 Nm^2/C^2.\)
In this problem, we know that the charges are equal and the distance between them is 10.0 cm. We also know that the force between them is 0.5 N. Therefore,
\(0.5 N = k(q^2)/(0.1 m)^2\)
Solving for q, we get:
\(q = \sqrt{[(0.5 N)(0.1 m)^2/k]}\)
\(q = \sqrt{(0.5 N)(0.01 m)/(9.0 x 10^9 Nm^2/C^2)}\)
\(q = 1.05 x 10^-8 C\)
Therefore, the value of the charge on each particle is \(1.05 x 10^-8 C.\)
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Which correctly describes latent heat?
A. The heat of molecules that are under pressure
B. The heat held inside of ice crystals colder than -2°C
C. The heat absorbed or lost by a substance while it's changing state
D. The heat used to change the temperature of a liquid
Option C. The heat absorbed or lost by a substance while it's changing state correctly describes latent heat
Latent heat is the heat absorbed or lost by a substance while it is changing state.
The latent heat is a type of heat that is transferred during phase change, i.e., while a substance undergoes a change of state.
For example, when ice melts into liquid water, or when liquid water evaporates into water vapor, heat is absorbed from the surroundings.
Latent heat is not associated with a temperature change; rather, it's associated with a change of state.
For instance, the temperature of water remains at 100°C while boiling.
When water is boiling, the latent heat of vaporization is absorbed and utilized to break the hydrogen bonds holding water molecules together to change water from the liquid phase to the gaseous phase.
When the water is boiling, adding more heat won't increase the water's temperature, instead, the extra heat will be absorbed to change the phase of water molecules.
Therefore, the correct answer to the given question is option C: The heat absorbed or lost by a substance while it is changing state.
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What is considered gravitational potential energy
The energy of an object above ground the energy of an electron moving through a copper wire the energy stored in the bonds of a carbohydrate molecule or the energy stored in the nucleus of a uranium atom
Answer:
inskeep quo quarter taken Kean wolf ita to the top of the above list of 44th 3rd century and the first of the above mentioned in the world is not a good idea to be texting a lot of people 3 or more people who are not a good idea to get a job and have the right to go back and get the job and they have the option for the first year and the first year
Answer:
Explanation:
gravitational potential energy is the how much energy would it be able to exert on the ground when it falls.
Which event is an example of condensation?
O A. Ice forms on the surface of a puddle. O B. Fog disappears when the Sun vomes out. O C. The outside of a glass of ice water becomes moist. O D. Perspiration dries on a person's skin.
Answer:
Explanation:
As warm air comes in contact with the glass, the air becomes cooler. When that happens the cool air can't hold as much water vapor which condenses on the glass.
The answer is C.
If a spring has a spring constant of 1000 N/m, what is the restoring force when the mass has been displaced 0.20 m?
The resting force of a spring that has a spring constant of 1000 N/m is 200N.
How to calculate force using Hooke's law?Hooke's law is the principle that the stress applied to a solid is directly proportional to the strain produced. This law describes the behavior of springs and solids stressed within their elastic limit.
The expression that connects the spring constant and the extension is as follows:
K = F/e
Where;
K = spring constantF = forcee = extension or displacement1000 = F/0.2¿
F = 200N
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The diagram shows two circuits.
Which statement correctly describes each circuit?
A. The bulbs in both circuits are connected in series.
B. The bulbs in Circuit 1 are connected in parallel, and the bulbs in Circuit 2 are connected in series.
C. The bulbs in both circuits are connected in parallel.
D. The bulbs in Circuit 1 are connected in series, and the bulbs in Circuit 2 are connected in parallel.
Answer:
(D is correct
A 6.20-kg steel ball at 27.7°C is dropped from a height of 21.7 m into an insulated container with 4.50 L of water at 10.1°C. If no water splashes, what is the final temperature of the water and steel? The specific heat of steel and water is 450J / (kg - K) and 4186J / (kg - K) respectively.
The final temperature of the water and steel mixture after the steel is dropped is determined as 7.12 ⁰C.
Conservation of energy
From the principle of conservation of energy, the energy lost by the steel ball is equal to the energy gained by the water.
P.E(steel) - Thermal(steel) = Thermal(water)
mgh - mcΔθ = mcΔθ
where;
mass of water = density x volume = 1 kg/L x 4.5 L = 4.5 kg(6.2)(9.8)(21.7) - (6.2)(450)(27.7 - T) = (4.5)(4186)(T - 10.1)
1,318.492 - 77,283 + 2790T = 18,837T - 190,253.7
114,289.192 = 16,047T
T = 7.12 ⁰C
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why do the stars rotate
Answer:
Angular momentum
Explanation:
Stars are formed as a result of a collapse of a low-temperature cloud of gas and dust. During the colapse conservation of angular momentum causes any small net rotation of the cloud to increase thus forcing the material into rotating
According to the Traditional Square of Opposition: If "All S are P" is true, then is "Some S are P" true or false?
\(\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}\)
Actually Welcome to the concept of Logic.
Since in the above statement it is given that,
All S are P ==> True,
then obviously Some S are also P always, hence it is true.
Answer is True.
Particles q₁ +8.0 μC, q2 +3.5 μC, and
93-2.5 μC are in a line. Particles q₁ and q2 are
separated by 0.10 m and particles q2 and q3 are
separated by 0.15 m. What is the net force on
particle q₂?
Remember: Negative forces (-F) will point Left
Positive forces (+F) will point Right
+8.0μ.C
+91
0.10 m
+3.5 C
+92
0.15 m
-2.5μ C
93
The net force on particle q₂, located between particles q₁ and q₃, is approximately 189000 N. The force exerted by particle q₁ on q₂ is positive and equals 252000 N, while the force exerted by particle q₃ on q₂ is negative and equals -63000 N.
To find the net force on particle q₂, we need to calculate the individual forces exerted on q₂ by particles q₁ and q₃ and then determine their sum.
The force between two charged particles can be calculated using Coulomb's law:
F = k * |q₁ * q₂| / r²
Where F is the force between the particles, k is the electrostatic constant (k ≈ 9.0 x \(10^9\) Nm²/C²), q₁ and q₂ are the charges of the particles, and r is the distance between them.
First, let's calculate the force exerted on q₂ by q₁:
F₁₂ = k * |q₁ * q₂| / r₁₂²
F₁₂ = (9.0 x \(10^9\) Nm²/C²) * |(8.0 μC) * (3.5 μC)| / (0.10 m)²
F₁₂ ≈ 252000 N
The force is positive because q₁ and q₂ have opposite charges.
Next, let's calculate the force exerted on q₂ by q₃:
F₂₃ = k * |q₂ * q₃| / r₂₃²
F₂₃ = (9.0 x \(10^9\)Nm²/C²) * |(3.5 μC) * (-2.5 μC)| / (0.15 m)²
F₂₃ ≈ -63000 N
The force is negative because q₂ and q₃ have the same charge.
Finally, we can find the net force on q₂ by summing the individual forces:
Net force = F₁₂ + F₂₃
Net force = 252000 N + (-63000 N)
Net force ≈ 189000 N
The net force on particle q₂ is approximately 189000 N.
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Two billard balls with identical mass move toward each other, with the positive x-axis to the right. Assume that the collision between them is elastic. If the initial velocities of the balls are +40.0 cm/s and -30.0 cm/s, what are the velocities of the balls after the collision? Assume friction and rotation are unimprotant.
The velocities of the two balls after the collision are +70.0 cm/s to the right for both balls.
What is velocity?Velocity is described as the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time.
The initial momenta of the two balls are:
p1 = mv1 = m(+40.0 cm/s) = +40m
p2 = mv2 = m(-30.0 cm/s) = -30m
m= mass of each ball.
We know that by the conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision.
p1 + p2 = mv1' + mv2'
mv1 + m(-v2) = mv1' + mv2'
We then Substitute the values for the momenta and solving for v1 and v2
v1 = (-v2) + v1 = (-(-30.0 cm/s)) + (+40.0 cm/s) = +70.0 cm/s
v2 = v1 - v2 = (+40.0 cm/s) - (-30.0 cm/s) = +70.0 cm/s
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A rigid body is rotating with constant angular speed 3 radians per second about a fixed axis through the points A. (4, 1, 1), B. (2, -1; 0), distances being measured in centimeters. The rotation is in the left-handed sense relative to the direction AB
1, Determine the unit vector pointing in the direction BA.
2, What is the angular velocity () of the of the body?
3, Write the position vector of point P: P .
Find the instantaneous velocity of particle P [hint v = w×r)
4, What is meant by left-handed rotation (left-handed coordinate system)?
5, Write the position vectors of points A and B The rotation axis AB has direction BA. Write the direction BA in terms of the components given above.
1.Unit vector in the direction BA: BA/|BA| = (2/3, 2/3, 1/3)
2.The angular velocity (ω) of the body is given as 3 radians per second.
3.Without the position of point P given, it is not possible to write the position vector of P.
4.Left-handed rotation refers to the direction of rotation where the rotation follows the left-hand rule.
5.Position vector of point A: (4, 1, 1)
Position vector of point B: (2, -1, 0)
The direction vector BA = (-2, -2, -1)
1.To determine the unit vector pointing in the direction BA, we subtract the coordinates of point B from the coordinates of point A and normalize the resulting vector.
The direction vector BA is given by:
BA = (4 - 2, 1 - (-1), 1 - 0) = (2, 2, 1)
To obtain the unit vector in the direction of BA, we divide the direction vector by its magnitude:
|BA| = √(2^2 + 2^2 + 1^2) = √(4 + 4 + 1) = √9 = 3
Unit vector in the direction BA: BA/|BA| = (2/3, 2/3, 1/3)
2.The angular velocity (ω) of the body is given as 3 radians per second.
3.Without the position of point P given, it is not possible to write the position vector of P. Please provide the position of point P to proceed with the calculation.
4.Left-handed rotation refers to the direction of rotation where the rotation follows the left-hand rule. In a left-handed coordinate system, if you curl the fingers of your left hand in the direction of rotation, your thumb will point in the direction of the rotation axis. It is the opposite direction to a right-handed rotation.
5.The position vectors of points A and B are:
Position vector of point A: (4, 1, 1)
Position vector of point B: (2, -1, 0)
The direction vector BA can be obtained by subtracting the coordinates of point A from the coordinates of point B:
BA = (2 - 4, -1 - 1, 0 - 1) = (-2, -2, -1)
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a weight suspended from a spring is seen to bob up and down over a distance of 24 cm twice each second.
The weight hanging from the spring is moving in a simple harmonic manner with an amplitude of 24 cm and a frequency of 2 Hz.
As per the given information, the motion of the weight is suspended from the spring using the information given.
Secondly, because the weight is seen to "bob" up and down, we may infer that it is oscillating or vibrating. This implies that the weight is moving in a straightforward harmonic manner.
Also, we are aware that the weight performs two oscillations, or cycles, per second. This is the oscillation's frequency, which we may represent as f = 2 Hz.
Finally, we are informed that the weight oscillates 24 cm up and down. This is the oscillation's amplitude, which we may represent as A = 24 cm.
In conclusion, the weight hanging from the spring is moving in a simple harmonic manner with an amplitude of 24 cm and a frequency of 2 Hz.
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George burnt his fingertips so badly that he can't feel anything with them anymore.
Which part of his skin must have been damaged?
O papillary layer
Hypodermis
hyperdemis
subcutaneous layer
George burnt his fingertips so badly that he can't feel anything with them anymore, then the papillary layer part of his skin must have been damaged, therefore the correct answer is option A.
What is thermal energy?It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.
As given in the problem George burnt his fingertips so badly that he can't feel anything with them anymore.
Option A is the appropriate response since George must have injured the papillary layer of his skin if his fingertips were burned so badly that he can no longer feel anything with them.
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I need help with this please
The magnitude of the acceleration of the engine that must be produced is 0.068 m/s².
What is the magnitude of the acceleration of the engine?The magnitude of the acceleration of the engine is calculated by applying the following kinematic equation.
s = vt + ¹/₂at²
where;
v is the velocity of the lunar in horizontal directions is the horizontal distancet is the time of motionThe acceleration of the engine in x direction is calculated as follows;
( 3.71 x 10⁸ x cos 46 ) = ( 1670 x cos73 )(8.64 x 10⁴) + ¹/₂ (ax)(8.64 x 10⁴)²
2.58 x 10⁸ = 4.22 x 10⁷ + 3.73 x 10⁹ax
3.73 x 10⁹ax = 2.16 x 10⁸
ax = ( 2.16 x 10⁸ ) / ( 3.73 x 10⁹ )
ax = 0.058 m/s²
The acceleration of the engine in y direction is calculated as follows;
( 3.71 x 10⁸ x sin 46 ) = ( 1670 x sin73 )(8.64 x 10⁴) + ¹/₂ (ay)(8.64 x 10⁴)²
2.67 x 10⁸ = 1.38 x 10⁸ + 3.73 x 10⁹ay
3.73 x 10⁹ay = 1.29 x 10⁸
ay = ( 1.29 x 10⁸ ) / ( 3.73 x 10⁹ )
ay = 0.035 m/s²
The magnitude of the acceleration of the engine that must be produced is calculated as;
a = √ ( ax² + ay² )
a = √ ( 0.035² + 0.058² )
a = 0.068 m/s²
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A 3 cm tall object is placed 2 cm to the left of a converging lens that has a focal length with a magnitude of 4 cm. A diverging lens with a focal length of magnitude 8 cm is placed 10 cm to the right of the first lens.
What is the magnification of the final image produced by these two lenses? Make sure you say whether it is bigger/smaller and upright/inverted.
Answer:
the mangnafication of the final is smaller anbsgs sgs shs sgs vd
The number of hours
of daylight tat a location receives varies depending on how far north or south it is from the
Answer:
equator
Explanation:
in south & north pole you could have 20+ hours daylight or night, everyday!
Two points charge of 4\mu C and 2\mu C are placed at theopposite corners of a rectangle. What is the potential difference Va- Vb
Answer:
\(Va-Vb=168KV\)
Explanation:
From the question we are told that
Two points charge of 4\mu C and 2\mu C
Generally we find the Va and Vb individually to find there difference
Given a rectangle with two equal sides each,Assume lengths for bot sides
Length L=0.3
Breath B=0.4
Diagonal D=\(\sqrt{0.3^2+0.4^2} =0.5\)
at opposite sides
Mathematically Va can represented as
\(Va =k(\frac{4*10^_-_6}{0.3} +\frac{-2*10^_-_6}{0.5} )\)
\(Va =9*10^9(\frac{4*10^_-_6}{0.3} +\frac{-2*10^_-_6}{0.5} )\)
\(Va =9*10^9(0.00001333333-0.000004} )\)
\(Va =84000V\)
\(Va =84KV\)
Mathematically Vb is represented as
\(Va =k(\frac{-4*10^_-_6}{0.3} +\frac{2*10^_-_6}{0.5} )\)
\(Va =9*10^9(\frac{-4*10^_-_6}{0.3} +\frac{+2*10^_-_6}{0.5} )\)
\(Va =9*10^9(-0.00001333333+0.000004} )\)
\(Va =-84000V\)
\(Va =-84KV\)
Therefore
\(Va-Vb=84-(-84)\\Va-Vb=84+84\\Va-Vb=168KV\)
An ultraviolet wave traveling through a vacuum has wavelength of 4.0 x 10^-7 m. The waves frequency, written in scientific notation to two significant figures, is ? X10^14Hz.
Answer:
λ = c / f or f = c / λ
f = 3.0E8 / 4.0E-7 = .75E15 / sec = 7.5E14 / sec = 7.5 X 10^14 /sec
Mrs. Tate travels in her car. She goes from mile marker 15 to 125 in 2.75 hours. What is her average speed?
Answer:
Explanation:
Step 1: Subtract 15 from 125
\(125-15=110\)
She traveled 110 miles in 2.75. We need to find her avg. speed.
Step 2: Divide 110 by 2.75
\(110/2.75=40\)
The answer is: Her average speed is 40 miles per hour.
Hope this helped!
Daryl ties a rope to a brick and lifts the brick straight up. The free-body
diagram below shows the brick when it is suspended above the ground.
Force 1
Force 2
What is force 1 in this diagram?
O A. Friction
OB. Tension
O C. Normal force
O D. Weight
The force 1 is tension force.
To find the correct statement among all the options, we need to know more about friction, tension, normal force and weight.
What is friction?Friction force is found between two surfaces when one is kept or moved on another surface.It is directed opposite to the direction of motion.What is tension force?When any object is hanged by an thread or rope, that object exerts a force on that rope. This force is called as tensional force.It's directed from along the rope towards the point of hanging.What is normal force?When an object is kept on a surface, the surface exerts a force on the object to oppose the weight of the object which is the normal force.It's perpendicular to the surface that an object contacts.What is weight?Weight is the gravitational force exerted by earth on that object. It's always directed towards the center of the earth.Thus, we can conclude that the correct option is (B).
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Which statement accurately describes surface tension?
A.
Attractive forces between molecules at the surface cause a liquid to resist spreading out.
B.
A liquid with larger molecules resists movement more than a liquid with smaller molecules does.
C.
A material with relatively weak bonds between its particles can be shaped into a thin sheet.
D.
A material slows or completely blocks the flow of electrons through it.
Answer:
A. Attractive forces between molecules at the surface cause a liquid to resist spreading out.
Explanation:
Surface tension can be defined as a property of liquid which makes its surface to resist an external force, as a result of the cohesive nature of its molecules.
This ultimately implies that, the surface tension of a liquid is mainly caused by the cohesive forces existing between its molecules.
Hence, the statement which accurately describes surface tension is that, the attractive forces between molecules at the surface cause a liquid to resist spreading out. Also, the attractive force is due to electrostatic forces and it reduces the surface area of a liquid.
Mathematically, surface tension is given by the formula;
Surface tension = surface force)/length the force acts
γ = F /d
Where;
Γ is the Surface tension.
F is the force which applies to the liquid.
d is the length where the force acts
Answer:
Attractive forces between molecules at the surface cause a liquid to resist spreading out.
Explanation:
A 50.0-kg wagon is pulled with a constant force of 380 N. Neglecting friction, the wagon's acceleration will be
A 50.0-kg wagon is pulled with a constant force of 380 N. Neglecting friction, the wagon's acceleration will be 7.6 m/s².
When a constant force acts on a wagon, it causes the wagon to accelerate We can calculate the wagon's acceleration using Newton's second law, which states that the force acting on an object is directly proportional to its acceleration, and the acceleration is inversely proportional to the mass of the object.A = F/mHere,A = AccelerationF = Force acting on the wagon m = mass of the wagon Substituting the given values, we getA = 380 N/50.0 kgA = 7.6 m/s²Therefore, the acceleration of the wagon is 7.6 m/s² when it is pulled with a constant force of 380 N, neglecting friction.For such more question on Newton's second law
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What does a moss leaf cell have in their structure?
Cell membrane
Cell wall
Chloroplasts
Mitochondria
Nucleus
Which one shall I write?
A moss leaf cell have Cell wall, Chloroplasts, Mitochondria and Nucleus in their structure.
A moss leaf has a single layer of cells. Each has a cell wall and is lined with a number of chloroplasts. Each and every cell has a nucleus. The nucleus is extremely small compared to the cell. The mitochondria in the the moss leaf cell is used to integrate sugar that is produced in the cell to produce energy.
After looking at the moss leaf cell structure and the given options, except cell membrane all the other parts are present in it. The cell membrane is also known as plasma membrane. It separates the interior of the cell from the outside environment.
Therefore, a moss leaf cell have Cell wall, Chloroplasts, Mitochondria and Nucleus in their structure.
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what's the name of first planet closest to the Sun?
Answer:
Mercury
Explanation:
It is the smallest planet in our solar system and closest to the Sun
Mars is the closet to the sun
describe in the relationships between all four spheres hydrosphere,atmosphere,biosphere and geosphere support your response with examples
Answer:
The spheres interact with one another, and a change in one might result in a change in another. Humans (biosphere) plough the fields with agricultural machinery made of geosphere materials, while the atmosphere (hydrosphere) provides precipitation to water the plants. The biosphere is home to all living organisms on the earth.
Explanation:
don't ask qestionsmm
An air-filled pipe is found to have successive harmonics at 800 Hz , 1120 Hz , and 1440 Hz . It is unknown whether harmonics below 800 Hz and above 1440 Hz exist in the pipe. What is the length of the pipe?
The length of the pipe = 53.59 cm
Explanation:The given successive harmonics are:
800 Hz, 1120 Hz, and 1440 Hz
The difference between two successive harmonics is 2 times the fundamental frequency
That is:
\(\begin{gathered} 2f_o=1120-800 \\ 2f_o=320 \\ f_0=\frac{320}{2} \\ f_o=160Hz \end{gathered}\)The fundamental frequency for closed pipes is given by the formula:
\(f_o=\frac{v}{4L}\)where v is the speed of sound, and is given as v = 343 m/s
Substitute v = 343 and f₀ = 160 into the formula
\(\begin{gathered} 160=\frac{343}{4L} \\ L=\frac{343}{4(160)} \\ L=0.5359m \\ L=0.5359\times100cm \\ L=53.59\text{ cm} \end{gathered}\)The length of the pipe = 53.59 cm
Identify three main ideas about models
Answer:
Approaches mathematical learning through inquiry
-Explore real contexts, problems, situations, and models
-Learning through doing shifts the focus on the students
-Problems have multiple entry and exit points
-Links to other disciplines
Explanation:
quizlet
Which graph illustrates constant speed?
A
B
C
D
I will reward you
Answer:
D because the line isn't changing which means constant speed it's going at the same rate so yea it's D
Answer:
D.
Hope that helps!?
Explanation: