Which of the following is NOT a criteria for a celestial object to be a planet?
-The object has cleared the neighborhood around its orbit of smaller objects.
-The object is in orbit around the Sun.
-The object has a nearly spherical shape.
-The object must be massive enough have a gravitational pull on the sun.
Answers
Answer:
The option which is not a criteria for a celestial object to be a planet is;
The object must be massive enough have a gravitational pull on the Sun
Explanation:
There are three criteria for a celestial object to be classified as a planet including;
1) The object's orbit is around the Sun
2) The shape of the object is nearly round due to its mass which is capable of assuming hydrostatic equilibrium
3) Other smaller objects in the neighborhood around the object has been cleared by the object
Therefore, the option which is not a criteria for a celestial object to be a planet is that it must be massive enough to have a gravitational pull on the Sun as every two objects in the Universe share a common gravitational pull according to Newton's Law of Gravitation.
Related Questions
what are the types of waves
Answers
Answer: There's 2 and they are called longitudinal and transverse
Explanation:
How does matter affect the way you perceive and use light
Answers
Answer:
The relationship between light and matter produces three phenomena, namely:
reflectionabsorption transmission and EmissionExplanation:
Reflection: This happens when matter deflects light in another direction
In everyday use, reflective materials are used on construction apparel, handheld electric torch, headlamp of vehicles etc.
2. Absorption: When matter captures electromagnetic radiation, it converts the energy of photons into internal energy and absorption is said to have taken place.
Light absorption by the chlorophyll in plants for use in production is an example of how humans use light absorption albeit indirectly.
3. Transmission
When matter is transparent or semi-transparent it allows light to pass through. For semi-transparent matter, some of the light is absorbed.
Transmission of light is used predominantly in various kinds of lighting effects for interior decoration and houses.
4. Emission
When matter releases energy as light, it is said to have emitted light.
Examples of everyday emission of light include Light Emitting Diode which is used in remote controls.
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A boy walks towards a stationary plane mirror at a speed of 12ms^1 what is the relative speed of approach of the boy and his image? (a)zero (b)1.2ms^-1 (c) 2.4ms^-1 (d)1.44ms^-1
Answers
Answer:
a
Explanation:
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A balloon containing 0. 0400 mol of a gas with a volume of 500 ml was expanded to 1. 00 l. Answer the questions and round answers to nearest hundredth place. Which equation should you use to find the amount of gas added?.
Answers
The equation that should be used to find the amount of gas added is Avogadro's law.
Avogadro's Law states that the amount of gas is directly proportional to its volume if the temperature and pressure are constant.
Formula for Avogadro's Law is n1 / V1 = n2 / V2, where n is the amount of gas and V is its volume. A balloon containing 0.0400 mol of a gas with a volume of 500 ml was expanded to 1.00 L. We need to determine the amount of gas added.
To do this, we will use Avogadro's Law, which is expressed as follows:
n1 / V1 = n2 / V2
We will express the initial amount of gas in the first balloon as:
n1 = 0.0400 molV1 = 500 mL
To find n2, we must convert V2 to mL since n2 is in moles and V2 is in mL.
n1 / V1 = n2 / V2n2 = n1 (V2 / V1)
n2 = 0.0400 mol (1000 mL / 500 mL)
n2 = 0.0800 mol
Therefore, the amount of gas added is 0.0800 mol - 0.0400 mol = 0.0400 mol.
Hence, we can use Avogadro's Law to find the amount of gas added.
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a. Identify the point at which the basketball had maximum potential energy. Give reason.
Answers
Potential energy is a type of energy that objects possess due to their position in a gravitational field. When the ball is tossed, it has potential energy that is converted into kinetic energy as it moves away from the hand.
A basketball's maximum potential energy is released when it is first released by the player. The reason for this is that at that point, the ball is at its highest point and has not begun its descent towards the ground.
What is the reason for maximum potential energy at the release point?
When the basketball is released by the player, it reaches its highest point. At this point, the ball possesses the maximum amount of potential energy. This is because the ball is at a height that is greater than ground level, so it has the potential to do work as it falls.
Therefore, the potential energy of the ball is at its highest when it is released by the player. Thus, the point of release is where the basketball has maximum potential energy.
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11. Mac and Tosh are arguing in the cafeteria. Mac says that if he flings the Jell-O with a
greater speed it will have a greater inertia. Tosh argues that inertia does not depend
upon speed, but rather upon mass. Who do you agree with? Explain why.
Answers
I agree with Tosh because inertia depends on mass. So Mac is wrong.
What is Newton's first law of motion?Newton's first law of motion states that an object at rest or uniform motion in a straight line will continue in that path unless acted upon by an external force.
Newton's first law of motion is also called the law of inertia because it depends on the mass of the object.
Inertia is the reluctance of an object at rest to start moving or the relictance of an object in motion to stop moving. The greater the mass of an object, the greater the inertia of the object.
Thus, Mac is wrong while Tosh is right because inertia does not depend on the speed of an object rather, it depends on the mass of the object.
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Which of the following . is a result of the transfer of energy?
A
gravity
B
sound
с
magnetis
D
matter
Answers
Answer:
magenicts sshbsunuwi
Explanation:
Option B (Sound) is the appropriate choice.
There are surface and groundwater vibrations that cause individual eardrums to vibrate, causing the sensory organ to be felt, which is considered as a Sound.
The other given alternatives such as:
Gravity - A force that seeks to bring two items together, is gravity. Gravitational influence is a property of all objects with weight.
Magnetism - Magnetism seems to be the force that magnetically exerts whenever they approach as well as repelled each other.
Matter - Material or materials from which a thing is usually made, is a matter.
These three choices are not related to the given question. Thus the above is the right answer.
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How does a series circuit differ from a parallel circuit?
Answers
\( \large \sf{Answer :- }\)
\(\pink:\implies\)In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents flowing through each component.
\(\pink:\implies\)In a series circuit, every device must function for the circuit to be complete. If one bulb burns out in a series circuit, the entire circuit is broken.
:⟹ In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents flowing through each component.
\pink:\implies:⟹ In a series circuit, every device must function for the circuit to be complete. If one bulb burns out in a series circuit, the entire circuit is broken
Rock salt has a density of 2.18 g/cm . what would the volume be of a 4.8-g sample of rock salt?
Answers
Rock salt has a density of 2.18 g/cm. The volume be of a 4.8-g sample of rock salt will be 2.20\(cm^{3}\)
Let's see the detailed solution,
Given,
the density of rock salt is 2.18g/cm
mass of the given rock salt sample is 4.8g
We know that,
\(density = \frac{mass}{volume}\)
On rearranging, we get
\(Volume = \frac{mass}{density} \\\)
Substituting the known values into the formula, we get
Volume = 4.8/2.18 = 2.2\(cm^{3}\)
The density of a substance indicates how dense it is in a given area. Mass per unit volume is the definition of a material's density. In essence, density is a measurement of how closely stuff is packed. It is a particular physical characteristic of a specific thing.
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Waves have energy that causes particles in matter to vibrate. So, it stands to reason that
Responses
the lower the energy, the faster the particles vibrate (which means a lower frequency).
the higher the energy, the slower the particles vibrate (which means a lower frequency).
the lower the energy, the slower the particles vibrate (which means a higher frequency).
the higher the energy, the faster the particles vibrate (which means a higher frequency).
Answers
The higher the energy, the faster the particles vibrate (which means a higher frequency).
option D
What causes the vibration of particles of a wave?
Waves like sound wave is produced when an object vibrates, creating a pressure wave.
This pressure wave causes particles in the surrounding medium to have vibrational motion. As the particles vibrate, they move nearby particles, transferring energy between neighboring particles, creating a faster vibration as the energy transmitted increases.
Thus, we can conclude that, waves have energy that causes particles in matter to vibrate. So, it stands to reason that the higher the energy, the faster the particles vibrate (which means a higher frequency).
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A construction worker puts 20 J of energy in to one strike of his hammer on the head of a nail. The energy transferred to driving the nail into the wood is 8.0 J. What is the efficiency of the construction worker's hammering? (2 sig figs and answer in a percentage)
Answers
Answer:
The efficiency of the constuction is 9.0
Explanation:
3. Define the term 'permanent magnet.
Answers
Answer:
Explanation:
Definition-
A material known as a permanent magnet can generate a magnetic field on its own, without the aid of an external magnetic field or electric current. The term "permanent" refers to the fact that it is made of a magnetized substance that maintains its magnetism over an extended length of time. Units of magnetic flux density, such as tesla (T) or gauss (G), are used to quantify the strength of permanent magnets.
Composition and Nature-
Ferromagnetic components including iron, nickel, cobalt, and their alloys are frequently used to create permanent magnets. These substances possess a potent magnetic field that aligns the electron spins and generates a net magnetic field. A permanent magnet creates an ever-present magnetic field that doesn't need any extra energy to keep it going.
In many different applications, including electric motors, generators, magnetic separation equipment, and magnetic resonance imaging (MRI) machines, permanent magnets are employed. They are also found in commonplace goods like magnetic toys and refrigerator magnets.
Which of the situations will result in a reflected wave that is an amplitude that is the same magnitude as the incident wave, but is inverted.
A) A wave propagating on a string of low linear mass density that is tied to a string of slightly higher linear mass density.
B) A wave propagating on a string that is tied to a wall to form a fixed boundary condition
C) All of these situations will give rise to an inverted reflected wave of equivalent amplitude.
D) A wave propagating on a string that is tied to a massless ring on a pole to form a free boundary condition.
E) A wave propagating on a string of high linear mass density that is tied to a string of slightly lower linear mass density.
F) None of these situations will give rise to an inverted reflected wave of equivalent amplitude.
Answers
A wave propagating on a string that is tied to a massless ring on a pole to form a free boundary condition will result in a reflected wave that is an amplitude that is the same magnitude as the incident wave, but is inverted.
When a wave is reflected from a free boundary, the reflected wave undergoes a phase change of 180 degrees or a complete inversion. This is because the free boundary is able to move without any resistance and so the reflected wave is able to change direction without any change in its phase.
In contrast, when a wave is reflected from a fixed boundary like in option B, the reflected wave undergoes no phase change. This is because the fixed boundary cannot move and so the reflected wave experiences a phase change of 0 degrees.
Therefore, only option D will result in a reflected wave that is an inverted mirror image of the incident wave with the same amplitude.
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An airplane travels for 2.5 hours at an average rate
of 130 miles per hour. Use the distance formula, d=rt, to find how
far the plane travels.
Answers
The plane travels a distance of 325 miles if the airplane travels for 2.5 hours at an average speed of 130 miles per hour. Using the distance formula (d = rt), we can calculate the distance.
To find the distance traveled by the airplane, we can use the distance formula, which is represented as d = rt. In this formula, "d" represents the distance, "r" represents the rate or speed at which the object is traveling, and "t" represents the time taken for the travel.
Given that the airplane travels for 2.5 hours at an average rate of 130 miles per hour, we can substitute these values into the formula. The rate of the airplane is 130 miles per hour, and the time taken is 2.5 hours.
Using the formula, we can calculate the distance traveled as follows:
d = rt
d = 130 mph × 2.5 hours
Multiplying the rate (130 mph) by the time (2.5 hours) gives us:
d = 325 miles
Therefore, the airplane travels a distance of 325 miles during the 2.5 hours of travel at an average rate of 130 miles per hour.
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Materials that hold electrons very tightly, and thus don't allow much static electricity to occur around them, are called
Answers
Please help which one !!
Answers
Answer:
4th one
Explanation:
A toroidal solenoid of square cross-section is made with inner and outer radii of 3.0 and 4.0 cm. How many turns of wire are necessary to obtain a self-inductance of 1.15 H
Answers
To find the number of turns of wire necessary to obtain a self-inductance of 1.15 H for a toroidal solenoid of square cross-section with inner and outer radii of 3.0 and 4.0 cm, we can use the formula for the self-inductance of a toroidal solenoid:
L = μ₀N²πr² / (2πr + πd)
where L is the self-inductance, N is the number of turns of wire, r is the mean radius (the average of the inner and outer radii), d is the cross-sectional diameter (in this case, equal to the side length of the square cross-section), and μ₀ is the permeability of free space (4π x 10^-7 H/m).
Plugging in the given values, we get:
1.15 = (4π x 10^-7)(N²π(0.035+0.04)²) / (2π(0.04) + π(0.01))
Simplifying, we get:
1.15 = 1.053 x 10^-6 N²
Solving for N, we get:
N = √(1.15 / 1.053 x 10^-6) ≈ 1093 turns
Therefore, approximately 1093 turns of wire are necessary to obtain a self-inductance of 1.15 H for the given toroidal solenoid.
To find the number of turns of wire necessary for a toroidal solenoid with a square cross-section, inner radius of 3.0 cm, outer radius of 4.0 cm, and a self-inductance of 1.15 H, we can use the formula for the self-inductance of a toroidal solenoid:
L = (μ₀ * N² * A * h) / (2 * π * R)
where:
L = self-inductance (1.15 H)
μ₀ = permeability of free space (4π × 10⁻⁷ H/m)
N = number of turns of wire (unknown)
A = cross-sectional area of the solenoid (square cross-section)
h = height of the solenoid (which is the difference between the outer and inner radii, 4.0 cm - 3.0 cm = 1.0 cm)
R = average radius of the solenoid (which is the average of the inner and outer radii, (3.0 cm + 4.0 cm) / 2 = 3.5 cm)
First, convert the measurements from cm to meters:
h = 1.0 cm * 0.01 m/cm = 0.01 m
R = 3.5 cm * 0.01 m/cm = 0.035 m
Rearrange the formula to solve for N:
N = sqrt((2 * π * R * L) / (μ₀ * A * h))
Since A is not provided, you will need the value of the square cross-sectional area to calculate the exact number of turns (N). Once you have that value, plug it into the formula, and solve for N.
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What is the source of heat for convection currents in the mantle layer of earth
Answers
Answer:
Magma from the core
Explanation:
...?
some learning theorists avoid intervening variables because these kinds of variables....?
Answers
Some learning theorists avoid intervening variables because these kinds of variables tend to complicate matters
What are intervening variablesSome learning theorists avoid intervening variables because these kinds of variables: Can be difficult to measure
In summary, while intervening variables can be helpful in describing and understanding complex learning processes, some learning theorists may avoid them due to challenges in measurement, establishing causality, potential oversimplification, confounding factors, and the "black box" problem.
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a boat takes 3.40 hours h o u r s to travel 30.0 km k m down a river, then 5.30 hours h o u r s to return. part a how fast is the river flowing? express your answer with the appropriate units.
Answers
The speed of the stream when the distance and time taken to travel are given is calculated to be 1.41 km/h.
A boat takes 3.4 hrs to travel 30 km.
It takes 5 hrs to return through same distance.
The speed of the boat during the downstream is, v + u = D/t
where,
v is the speed of the boat
u is the speed of the stream
D is the total distance
t is the time
v + u = 30/3.4 = 8.82 km/h
v = (8.82 - u) km/h
The speed of the boat upstream is given as, v - u = D/t
Substituting the values into the above equation,
v - u = D/t
(8.82 - u) - u = 30/5
8.82 - 2 u = 6
2 u = 8.82 - 6
2 u = 2.82
u = 1.41 km/h
Thus, the speed of the stream is calculated to be 1.41 km/h.
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An electrical junction has three wires A,B and C connected to it. Wire A carries 4.2A going in, wire B carries 2.6A going out.What does wire C carry?
Answers
The wire C carries 1.6 A of current going out of the junction.
Kirchhoff's current law, also known as Kirchhoff's first law or Kirchhoff's point rule, is a principle in electrical engineering that states that the total current entering a junction in a circuit must equal the total current leaving the junction.
In other words, the sum of the currents flowing into a junction must equal the sum of the currents flowing out of it. This law is a consequence of the law of conservation of charge, which states that the total charge in a closed system remains constant.
So, if wire A is carrying 4.2 Amps in and wire B is carrying 2.6 Amps out, then wire C must carry the difference, which is 4.2 A - 2.6 A = 1.6 Amps.
Therefore, wire C carries out 1.6 Amps.
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If an area has high air pressure and low humidity, what type of weather will it most likely have?
Answers
Answer:
c
Explanation:
What do you think are the factors that might affect the magnitude of this angle
Answers
The bond angle in a compound is the angle formed between two bonds in the compound. It is affected by the geometry, electron cloud and the size of atoms.
What is bond angle ?Bond angle is the distance between two chemical bonds in a compound. Bond angle is affected by the electrostatic force of repulsion and attraction. Hence, the presence of lone pairs and bond pair are the main factors affecting the bond angle.
If there are lone pairs, the repulsion between two lone pairs is greater than that between a lone pair and bond pair which in turn greater than that between two bond pairs.
Hence, the electron clouds will align themselves to minimize the repulsion. Thus, the geometry and bond angle may vary from what we predicted based on hybridization.
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Your question is incomplete. But your complete question probably was:
What is bond angle? What do you think are the factors that might affect the magnitude of this angle?
Boo help me please!!!!!!!
Answers
Answer:
??
Explanation:
A 7.0 kg bowling ball moves at 2.45 m/s.How fast must a 2.60 g ping pong ball move so that the two balls have the same kinetic energy
Answers
Answer:
127.12 m/s
Explanation:
From the question,
Kinetic energy of the bowling ball = Kinetic energy of the ping pong ball
1/2mv² = 1/2m'v'²
Where m = mass of the bowling ball, v = velocity of the bowling ball, m' = mass of the ping pong ball v' = velocity of the ping pong ball
make v' the subject of the equation
v' = √(mv²/m')................ Equation 2
Given: m = 7.0 kg, v = 2.45 m/s, m' = 2.60 g = 0.0026 kg
Subtitute into equation 2
v' = √[(7×2.45²)/0.0026]
v' = √16160.57
v' = 127.12 m/s
Which two sentances describe how meiosis differs from mitosis?
Answers
Answer:
"Meiosis produces cells with half the chromosomes of the parent cell" and "Meiosis produces either male or female gametes." The correct options are
Explanation:
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a car is moving with a velocity of 25m/s for 15s. calculate the displacement of the car. The acceleration of the car over the 15s
Answers
Explanation:
this might help you i think so
A scientist is using a lithium ion battery to power her laptop.
Which statement about the battery is correct? (1 point)
A.) Electrons are lost to the environment when the battery is used.
B.) Lithium atoms are created as the battery recharges.
C.) The mass of the battery increases when it is recharged.
D.) A new substance is formed as the battery is used.
Answers
The statement about the battery which is correct is; a new substance is formed as the battery is used.
Lithium ion batteries have become part of most modern devices such as cell phone, laptop computers and other digital devices.
It shorter time of recharge and good battery life has continued to make it a top choice in the electronics industry.
The equation that describes the chemistry of lithium ion battery is;
LiC6 + CoO2 ⇄ C6 + LiCoO2
The reaction goes towards right hand side when the battery is in use and towards the left hand side when that battery is recharging.
Hence, from the equation, we can see that a new substance, LiCoO2 is formed when the battery is in use.
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Answer:
The anwser is d
Explanation
I did the test
What is the electric field 1. 0cm away from a proton?
Answers
The electric field 1.0cm away from a proton is 9.0x10^5 N/C.
A proton has a positive charge of +1.6x10^-19 C. The electric field can be calculated using Coulomb's law, which states that the magnitude of the electric field created by a point charge is proportional to the magnitude of the charge and inversely proportional to the square of the distance from the charge.
Therefore, the electric field generated by a proton would be given by the equation E=kq/r^2, where k is the Coulomb constant (8.99x10^9 Nm^2/C^2), q is the charge of the proton (+1.6x10^-19 C), and r is the distance from the proton (1.0cm = 0.01m).
Plugging in the values yields E=(8.99x10^9)(1.6x10^-19)/(0.01^2)=9.0x10^5 N/C. This means that at a distance of 1.0cm away from a proton, the electric field will have a strength of 9.0x10^5 N/C.
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What are the five possible difficulties associated with ADD/ADHD?
Answers
Answer:
my cousin got that and i would say that some challenges with adhd/add is behavioral issues, meaning they dont pay attention and some people with adhd can get depressed or have anxiety also Low self-esteem.
Poor grades.
also adhd is a disability