Although Neptune is the farthest planet from the Sun, it travels in a fixed orbit around the Sun and never changes its path. What is the reason for this?
A) The magnetic pull of the Sun holds Neptune in its orbit.
B) The gravitational pull of the Sun holds Neptune in its orbit.
C) The nuclear force acting between the Sun and Neptune holds the latter in its orbit.
D) The repulsive force of bodies outside the solar system holds Neptune in its orbit.
Answer:
B. The gravitational pull of the sun holds Neptune in its orbit.
Explanation:
Whether a farthest planet or a nearest planet, all the planets in the solar system are held in their respective orbits by the mutual gravitational force of attraction. That is, the Sun exerts a gravitational force on the planet and the planet in turn pulls the Sun towards it. These two forces are equal in magnitude and oppositely directed to each other.
That is very well explained by the Newton's universal gravitational law,
As the distance between the Sun and the planet increases, the mutual gravitational force of attraction between the planets will decrease.
Mercury, Venus, Earth , Mars, Jupiter, Saturn, Neptune and Uranus are the planets that belong to the solar system. All these planets are revolving around the Sun.
Answer:
B
Explanation:
At noon, ship a is 30 nautical miles due west of ship
b. ship a is sailing west at 22 knots and ship b is sailing north at 23 knots. how fast (in knots) is the distance between the ships changing at 5 pm? (note: 1 knot is a speed of 1 nautical mile per hour.)
How are radio waves used on Earth?
Explanation:
Radio wave is an electromagnetic wave. It travels with the speed of the light. It is the longest wavelength in the electromagnetic spectrum.
Radio wave is used in cellphone and radio communication.
Radio wave is generated by transmitters. It is received by using an antenna.
Radio wave is used in RADAR. RADAR is a detection system. It is used to determine the velocity of the object.
An important difference between waves and classical particles is that A. waves cannot interfere. B. particles cannot interfere. C. waves can only interfere destructively. D. particles can only interfere destructively.
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Why does sound move faster in solids mediums
A. The particles in solids or more compact
B. The particles in between them
C. Solids are the coldest medium
D. Sound does not move fastest in solids it moves fastest in gases
sound move faster in solids mediums because
A. The particles in solids or more compact
Sound move faster in solids mediums because the particles in solids or more compact. So, the correct option is (A).
What is Sound?
Sound is a type of vibration which propagates as an acoustic wave, through a transmission medium like gas, liquid or solid. It is the reception of such waves and their perception by the brain.
It is a type of energy made by vibrations. The movement of surrounding air molecules occurs due to the object vibration. These molecules bump into the molecules close to them which causes them to vibrate as well and makes them bump into more nearby air molecules.
Sound travels faster in solids than in liquids and gases because the molecules of solids are closer together which can transmit vibrations (energy) faster. Sound travels slowest through liquids and gases because the gas molecules are farthest apart.
Thus, Sound move faster in solids mediums because the particles in solids or more compact. So, the correct option is (A).
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Because speed is squared in the kinetic energy equation doubling an object's speed will what to its kinetic energy
Which one of the following scenarios accurately describes a condition in which resonance can occur? A. A vibrating tuning fork is struck and begins to vibrate as the object used to strike it is placed away from the tuning fork. B. A column of air has a height equal to 1⁄8 of the wavelength of the sound waves produced by a tuning fork vibrating over the column of air in an open pipe that's partially immersed in water. C. A pipe's length is equal to 1⁄2 of the wavelength of the sound waves produced by a tuning fork vibrating over one end of the pipe that's open to the air at both ends. D. A person is holding a tuning fork on one end of a football field and another person is holding a separate tuning fork on the opposite end of the field.
static electricity occurs when electrons build up and _________
Someone please help?? :(
Julie started with Newton's second law of motion. She drew a free-body diagram of an inclined plane experiment. She derived an equation for the acceleration down the inclined plane and determined how it would change if she changed the angle of the incline. From there she was able to derive an equation to find the coefficient of friction of any material on the inclined plane.
In the scenario, how did Julie determine her findings on the coefficient of friction?
a. inductive reasoning
b. deductive reasoning from a valid principle
c. deductive reasoning from an invalid principle,
The outer shell of the atoms in group D____
Are empty
Are half full
Are full
Need one more electron to be full.
Answer: Option C) Are Full
Explanation: In the modern periodic table, Group D is placed between S and P blocks. The valency of this group display number of valencies. The valency of an element can be defined as the number of hydrogen atoms that can either or replace one atom of that element.
For Group D elements, the outer most shell are observed to be full.
This outermost shell is referred to as the valence shell, and the electrons located within it are referred to as valence electrons. The outer shell of the atoms in group D are full.
What is a periodic table?The periodic table is an organization of all known elements in order of increasing atomic number and repeating chemical characteristics. They are organized in a tabular format, with a row representing an era and a column representing a group.
Elements of the same group will have the same valence electron configuration and, as a result, will have comparable chemical characteristics.
The amount of electrons in an atom's outermost shell impacts its reactivity, or proclivity to form chemical interactions with other atoms. This outermost shell is referred to as the valence shell.
Hence the option c is correct. The outer shell of the atoms in group D are full.
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Michaela is babysitting little Tommy Turner who is known to be terror . Michaela answered the phone when Tommy's parents called to check him leaving Timmy unattended for three minutes .During that time Tommy turned the oven on its hottest setting and placed his new police car Mylar ballon in the oven. what will most likely happen to his ballon
the balloon will pop
The increased temperature will cause the particles in the balloon to move faster and will create more pressure on the balloon. This pressure will pop the balloon.
A small cuckoo clock has a pendulum 25cm long with a mass of 10g and a period of 1s. the clock is powered by a 200gram weight which falls 2m between the daily windings. the amplitude of the swing is 0.2rad. what is the q value of the clock?
a charge of 6.4x10^-7 C experiences an electric force of 1.8x10^-1 N what is the electric field strength
Compare and contrast the movement of electric charge in a solution with the transfer of electric charge between solid objects.
Electric charge transfer between solid objects involves the movement of electrons, whereas in solutions it involves the movement of both cations and anions. Both processes follow the principle of charge conservation.
Understanding the movement of electric charge requires comparing how it occurs in solutions versus solid objects. In solid objects, charge transfer primarily happens through the movement of electrons. When two solid objects come into contact, electrons can be transferred from one object to another, often facilitated by friction, leading to one object becoming negatively charged and the other positively charged.
On the other hand, in a solution, electric charge is carried by ions. For instance, in an ionic solution like salt water, both positive ions (cations) and negative ions (anions) can move freely. This is different from the transfer between solid objects where only electrons, carrying negative charges, move.
The relationship between the total charges before and after the transfer is that the total amount of charge is conserved. This means the sum of positive and negative charges remains constant, even though the charges might be redistributed. This principle is crucial in both solid object charge transfer and ionic solutions.
So, while the transfer of electric charge between solid objects involves moving electrons, in a solution, it involves the movement of both cations and anions. Both processes abide by the principle of charge conservation, ensuring that the total charge remains constant.
Suppose you were asked to demonstrate electromagnetic induction. Which of the following situations will result in an electric current?
A magnet is moving toward a wire loop.
A wire loop is moving away from a magnet.
A wire loop is rotated near a magnet.
All of the above
the electron cloud model describes which of the following
the group of protons that are in the nucleus
the neutron orbital
the negative charge of the electron
location where an electron has the highest probability of being found
The electron cloud model in physics describes the location where an electron has the highest probability of being found around an atom. Option D
The older Bohr model of the atom, which showed electrons orbiting the nucleus in set pathways like to planets orbiting the sun, was superseded by this one. Instead of representing electrons as particles in fixed orbits, the electron cloud model views electrons as a cloud-like region surrounding the nucleus, with each point representing the likelihood of finding an electron there.
This idea highlights how electrons are characterized by their quantum mechanical nature, which prevents them from being localized and instead allows them to be represented by probabilities within particular spatial regions surrounding the nucleus. Therefore, the understanding of electron dispersion surrounding the nucleus of an atom depends on the electron cloud model.
The electron cloud model describes the location where an electron has the highest probability of being found within an atom.
This model, also known as the quantum mechanical model, represents electrons not as definite orbits but as regions of probability called electron clouds.
It accounts for the wave-like nature of electrons and their distribution in atomic orbitals, where electrons are most likely to be found based on their energy levels and quantum numbers.
It does not describe the group of protons in the nucleus, the neutron orbital, or the negative charge of the electron; rather, it focuses on the spatial distribution of electrons in an atom.
Two people each hold the end of a rope and create waves by moving their arms up and down. This wave is best classified as a transverse wave because ___________
the answer is C the wave is moving horizontally as the particles of the rope move up and down.
Answer:
c
Explanation:
c
When sea ice forms in the ocean, the salinity of the surrounding ocean water would ?
Answer:
increases
Explanation:
When sea ice forms in ocean salinity of surrounding ocean water increases.
The salt plays an important role in the ocean circulation.When sea ice is formed in an ocean then this indicates the insertion of salt into the ocean. The salinity of surrounding water increases as salt water is heavier i.e its density is more as a result of high density the water sinks.There is an exchange of salt takes place between ocean and the sea ice.This influences the ocean circulation and this circulation lasts up to several hundreds of kilometers.
The final phase of the order cycle is called order ____.
How much work does the electric field do in moving a proton from a point with a potential of +145 v to a point where it is -55 v ? express your answer in joules?
Final answer:
The electric field does work on a proton when it moves between two points with a potential difference, with the value calculated as 3.204 × 10-17 joules.
Explanation:
The question asks us to calculate the work done by the electric field in moving a proton between two points with a specified electric potential difference. Since work done by an electric field is equal to the charge of the particle times the change in electric potential (W = qV), and we know the proton's charge is approximately 1.602 × 10-19 coulombs, we can calculate the work done as follows:
Change in potential (V) = Vfinal - Vinitial = (-55 V) - (+145 V) = -200 VWork done by the electric field (W) = qV = (1.602 × 10-19 C) × (-200 V) = -3.204 × 10-17 JThe negative sign indicates that the electric field is doing work on the proton in the direction opposite to the electric field. Therefore, the electric field does 3.204 × 10-17 joules of work on the proton.
A 52 g plastic ball is moving to the left at 24 m/s . how much work must be done on the ball to cause it to move to the right at 24 m/s ?
To cause the plastic ball to move to the right at 24 m/s, 499.04 J of work must be done on it.
Explanation:The work done on an object is equal to the change in its kinetic energy. In this case, the plastic ball is initially moving to the left at 24 m/s. To cause the ball to move to the right at 24 m/s, the work done on it must change its direction and increase its speed by 48 m/s (difference between -24 m/s and 24 m/s). The work done can be calculated using the formula for work: Work = Change in kinetic energy = (1/2) * mass * (final velocity^2 - initial velocity^2).
Given that the mass of the ball is 52 g (0.052 kg) and the change in velocity is 48 m/s, we can plug in these values into the formula:
Work = (1/2) * 0.052 kg * (48^2 - (-24)^2) = 499.04 J
Therefore, 499.04 J of work must be done on the ball to cause it to move to the right at 24 m/s.
Answer: The resulting answer for this is 0 Joules
Explanation: For any answer that talks about a complete 180 direction change with the same velocity, the answer will always be zero.
KE = 1/2mv1^2 - 1/2mv2^2 which leads to KE = 1/2m(v1^2-v2^2) = (1/2)(0.052kg)(24^2m/s - 24^2m/s) = 0 J
Help please
Water is a compound because it (1 point)
• can be broken down into simpler substances.
• always has two hydrogen atoms for each oxygen atom.
• is made of water atoms joined together.
• both a and b
Which of the following is a heterogeneous mixture? (1 point)
• water in a swimming pool
• sugar water
• a jar of mixed nuts
• stainless steel,
A condition that affects the ability to sleep or the quality of sleep is referred to as a __________.
A. parasomnia
B. sleep disorder
C. sleep debt
D. night terror
What is the motion of the particles in this kind of wave?
A. The particles will move up and down over large areas.
B. The particles will move up and down over small areas.
C. The particles will move side to side over small areas.
D. The particles will move side to side over large areas.
A car starts from rest at a stop sign. It accelerates at 4.0 m/s2 for 3 seconds, coasts for 2 s, and then slows down at a rate of 3.0 m/s2 for the next stop sign. How far apart are the stop signs?
what mechanical layer lies below the lithosphere
Answer: The layer below the lithosphere lies the Asthenosphere.
Explanation:
The asthenosphere is a viscous layer, in which the rocks are solid but has the ability to slightly flow due to deformation. This layer plays a very significant role in the plate tectonic movement, which initiates the motion of the lithospheric crust, due to the generation of the convection current at the mantle. It is present in the upper part of the mantle.
The internal heat from the core of the earth radiates to the mantle, and the magma at the mantle gets heated up and become less dense and rises up, and this magma when reaches on the upper part of the mantle, near the surface, gets cools down and become more dense, and sinks. This continuous circulation of magma in the mantle region is known as the convection current.
The layer below the lithosphere is the asthenosphere, which is semi-fluid and allows the tectonic plates of the lithosphere to move.
Explanation:The mechanical layer that lies below the lithosphere is known as the asthenosphere. This semi-fluid layer is located directly underneath the rigid lithospheric plate and is characterized by its ability to flow and move. Due to intense heat and pressure coming from the earth's core, the rocks in the asthenosphere exist in a plasticky, semi-liquid state, which allows the tectonic plates of the lithosphere to move and shift above it.
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Which is the correct equation for calculating the kinetic energy of an object ?
List five rules of golf etiquette. Explain the correct stance, grip, orientation, and parts of a swing.
Answer:
1: Wear proper uniform as per the requirement.
2: One should be agree to rules before start of game.
3: Not to make too much noise on ground.
4: Respect the decision.
5: Balls.
Explanation:
* For correct posture, one should stand with a larger open feet, this will help to swing easily and a greater force will be applied.
* Tight grip is necessary to hold the stick and for proper shots. The grip should be tight at the end of the stick.
A soccer ball is kicked with an initial speed of 8.8 m/s. After 0.179 s it is at its highest point. What was its initial direction of motion?,
A metal sphere has a charge of +8.0 mc. what is the net charge after 6.0×1013 electrons have been placed on it?