Answer:
There is a net force towards the center of the circle that causes the yo-yo to seek the center.
Circular Motion Qualities:
-Constant speed
-Accelerating
-Velocity is changing constantly.
Centripetal acceleration perpendicular to the motion causes the object to change direction
a_c=v^2/r
Tangential acceleration in the direction of the motion causes and increase or decrease in speed.
Tension in the string towards the center provides the centripetal force in a a yo-yo swinging around a person's head.
Centripetal force is the force that keeps an object moving in a circular path. In the case of a yo-yo swung around a person's head, the centripetal force is provided by the tension in the string acting towards the center of the circle. This force allows the yo-yo to maintain its circular motion.
10)
Current flowing in a circuit depends on two variables. Identify these variables and their relationship to current.
A) Current is proportionate to the conductance of the circuit and precisely proportional to the voltage applied across the circuit.
B) Current is conversely proportional to the electrical tension of the circuit and corresponds to the resistance across the circuit.
C) Current is inversely proportional to the resistance of the circuit and directly proportional to the voltage applied across the circuit.
D) Current is commensurate to the resistance of the circuit and directly proportional to the electric pressure applied across the circuit.
The current is “inversely proportional to resistance of circuit” and “directly proportional to voltage across the circuit”.
Answer: Option C
Explanation:
The amount of current flowing through the circuit depends upon the resistance and voltage.
Current depends on resistance of the circuit. If there is high potential difference, the current in circuit will be high. The high resistance leads to less current.
Mathematically the relationship between voltage, current, and resistance is given as [tex]V=I \times R[/tex]. This is also stated as Ohms law.
Which object is in static equilibrium
Answer:
The body is said to be in static equilibrium if the net force acting on a body at rest is zero.As the net force is zero,the body will not undergo motion.
Explanation:
Which organ is being described in this statement?
If this organ malfunctions, all other body systems will be starved of oxygen.
A.
kidneys
B.
skin
C.
heart
D.
small intestine
Answer:
it is C heart
If the heart malfunctions, all other body systems will be starved of oxygen.
The cardiovascular system provides the body with vital nutrients and oxygen through a complex network, whereby all organs, body systems, and body tissues receive oxygen-rich blood.
Heart is a muscular-type organ that animals and humans possess, which performs the function of pumping blood to the rest of the body.Oxygenated blood flows from the heart through the arteries, which branch into the smaller arterioles until finally dividing into the capillaries.The capillaries pass into the venules, which open into the veins, which become larger in cross section until the blood finally flows back to the heart.In the capillary area, the transfer of oxygen and nutrients from the blood to the tissues can take place and also allows waste products to pass from the tissues into the blood.Therefore, we can conclude that if the heart malfunctions, all other body systems will be starved of oxygen.
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Which is a characteristic of all ions?
Answer:>
Explanation:
All ionic compounds have high melting and boiling points
Answer:
They have one overall charge.
Explanation:
which is not a form of ionizing radiation
Answer:
X rays, gamma rays, alpha particles, and beta particles are ionizing radiation
The form which is not ionizing radiation is infrared light
Ionizing radiations are higher energy radiation capable of ionizing an electron in an atom or molecule.
Examples include:
gamma raysX-rayNon-ionizing radiations are electromagnetic waves with a lower energy and they are not capable of ionizing electrons in atoms or molecules.
Examples include:
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which statement about magnetic force is false ? a. it is expected over a distance. b. it affects only certain types of matter c. it includes forces of attraction and repulsion d. it act only on materials that are touching a magnet.
d, its act only ob material that are touching a magnet
The false statement about magnetic force is: it act only on materials that are touching a magnet. Hence, option (d) is correct.
What is magnetic force?Electromagnetic force is a result of charge motion, which also produces magnetic force. We know that a moving charge creates a magnetic field around itself. In this situation, the magnetic force can be thought of as a force that results from magnetic fields interacting.
As magnetic force is a field force, it is expected over a distance. In every atoms, electron revolves around nucleus but a certain type of material has non-zero net magnetic momentum. Magnetic field affects only the material with non-zero net magnetic momentum. Same poles of magnets repulse whereas opposite poles of magnets attract. But due to being a field force, it does not act only on materials that are touching a magnet - it acts all material in its surroundings .Hence, option (d) is correct.
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What ions exist in base solutions
Answer:
In this reaction, sodium hydroxide (NaOH) disassociates into sodium (Na+) and hydroxide (OH-) ions when dissolved in water, thereby releasing OH- ions into solution. Arrhenius acids are substances which produce hydrogen ions in solution. Arrhenius bases are substances which produce hydroxide ions in solution.
The ions exist in base solutions is OH⁻ ions.
What is basic solution?A basic solution is an aqueous solution containing more OH⁻ ions than H⁺ ions.
When NaOH as a solute is mixed into the solvent like water, it separates NaOH into Na+ and OH-. The sodium ions Na⁺ have little effect on the solution, but the hydroxyls OH⁻ ions makes the solution more basic.
Thus, NaOH form a basic solution by the presence of OH⁻ ions into it.
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What happens when a hurricane makes landfall? A. A hurricane will weaken after making landfall. B. A hurricane will pick up speed after making landfall. C. A hurricane will have stronger wind speeds after it makes landfall. D. A hurricane will have a smaller storm surge after It makes landfall. Brainly
Hurricanes are intense storm in tropic regions. When hurricane makes landfall it will loss its strength and weakens . Hence option A is correct.
What is hurricane ?Hurricanes are powerful storms with a tropical origin. Small groups of disorganized storms that collect energy from the heat of the ocean water are the precursors to hurricanes.
Individual clouds will start to group together into a single storm if specific atmospheric conditions are met. The organization of the cloud clusters will intensify, and the winds will pick up and move around a particular point, the eye, if the storm keeps consuming heat from the ocean.
It is also recognized that hurricane-related extreme atmospheric conditions can give rise to tornadoes. Because they are no longer able to draw energy from the ocean when a storm makes landfall, they start to weaken. They can still harm a lot and are harmful nonetheless.
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What happens when a hurricane makes a landfall; it weakens. This makes option A the right choice.
What happens when a hurricane makes landfall?When a hurricane makes landfall, several things typically happen:
A. A hurricane will weaken after making landfall: This statement is generally true. When a hurricane moves over land, it loses its primary energy source, which is the warm ocean waters. As a result, the storm's strength tends to diminish gradually as it moves farther inland. However, hurricanes can still cause significant damage even after making landfall, especially if they are large and powerful at the time of landfall.
B. A hurricane will pick up speed after making landfall: This statement is not accurate. Once a hurricane makes landfall, it usually begins to slow down as it interacts with the friction and topography of the land. The storm's forward speed typically decreases as it moves inland.
C. A hurricane will have stronger wind speeds after it makes landfall: This statement is generally not true. As mentioned earlier, a hurricane weakens after making landfall due to the loss of its primary energy source, warm ocean waters. Wind speeds tend to decrease as the storm moves over land.
D. A hurricane will have a smaller storm surge after it makes landfall: This statement is generally true. Storm surge is the rise in sea level generated by a hurricane's winds and low pressure. When a hurricane moves over land, its ability to push seawater ashore diminishes, resulting in a reduction in the storm surge. However, storm surge can still be a significant threat near coastal areas even after a hurricane makes landfall.
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Earth's gravity attempts to change the velocity of all objects on Earth's surface toward _____ at a rate of 9.8 meters per seconds squared.
Answer:
Earth's gravity attempts to change the velocity of all objects on Earth's surface toward the center of the Earth at a rate of 9.8 meters per seconds squared.
Explanation:
Answer:
Earth's gravity attempts to change the velocity of all objects on Earth's surface toward CENTER OF EARTH at a rate of 9.8 meters per seconds squared.
Explanation:
As we know that the gravitational force of Earth is towards the center and it is given by the formula
[tex]F = \frac{GMm}{R^2}[/tex]
this is the force experienced by all the objects near the surface of Earth and this force is towards the center of the Earth
So this is also know as gravity of Earth
Now we know that the acceleration of objects near the surface of Earth is given by the equation
[tex]a = \frac{F}{m}[/tex]
[tex]a = \frac{GM}{R^2}[/tex]
this is also known as acceleration due to gravity and this is of magnitude g = 9.8 m/s/s
so all objects will move towards the center of earth with rate of change in velocity of 9.8 m/s/s
A devout halloweener not only dressed as an astronaut, but travelled to the moon for the full experience. The astronaut jumps on the moon with an initial upward velocity of 2.98m/s. If the acceleration of gravity on the moon is -1.62m/s2, what is the highest the astronaut jumps?
Answer:
2.78 m
Explanation:
At the peak, the velocity is 0.
Given:
a = -1.6 m/s²
v₀ = 2.98 m/s
v = 0 m/s
x₀ = 0 m
Find:
x
v² = v₀² + 2a(x - x₀)
(0 m/s)² = (2.98 m/s)² + 2(-1.6 m/s²) (x - 0 m)
x = 2.775 m
Rounded to 3 sig-figs, the astronaut halloweener reaches a maximum height of 2.78 meters.
15 POINTS! explain how the information from stimuli can become a memory or result in a behavior
Answer:
Memories occur when specific groups of neurons are reactivated. In the brain, any stimulus results in a particular pattern of neuronal activity—certain neurons become active in more or less a particular sequence.
Explanation:
Hope this helps
Integration of stimuli and comparison with memories and previous stimuli leads to specific responses. Behaviors can be instinctual or learned, depending on the influence of the environment.
Explanation:Integration. Stimuli that are received by sensory structures are communicated to the nervous system where that information is processed. This is called integration. Stimuli are compared with, or integrated with, other stimuli, memories of previous stimuli, or the state of a person at a particular time. This leads to the specific response that will be generated. For example, when seeing a baseball pitched to a batter, the trajectory of the ball and its speed will be considered before the batter decides to swing.
Behaviors can result from this integration of stimuli. They can be instinctual or learned. Instinctual behaviors are not influenced by the environment and include mating systems and methods of communication. On the other hand, learned behaviors are influenced by the environment and include imprinting, habituation, conditioning, and cognitive learning.
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HELLLLPPPPL MEEEEEEEEEE
Answer:
i think its D
Explanation:
Answer:
I wan to say that the answer is C
Explanation:
Kepler's laws follow which law discovered by Sir Isaac Newton?
A. Universal Laws of Attraction
B. Universal Gravitational Law
C. Universal Law of Force
D. Universal Law of Friction
B. Universal Gravitational Law
Answer:
B. Universal Gravitational Law
Explanation:
As we know that Kepler gives three laws regarding the planetary motion of all planets around the sun
All his laws are derived from the basic Theory of law of attraction by gravitation.
Universal law of attraction given by Sir Issac Newton says that if two masses are placed at some distance from each other then the net force between two masses is given as
[tex]F = \frac{Gm_1 m_2}{r^2}[/tex]
here we know that
[tex]m_1, m_2[/tex] = masses of two objects
[tex]r [/tex] = distance between two objects
Need help with getting the answer!
Answer:
D. Salt Weathering
Explanation:
Salt weathering is defined as a geomorphic process resulting in the physical disintegration of rocks or stones and in the fretting of their surfaces. Often you tend to find the best examples of salt weathering in dessert areas and coastal areas. You can find three distinct types of weathering which are biological weathering, physical weathering, and chemical weathering.
Tina and her puppy are tugging on a rope each pulling on opposite ends when is tina doing work ? When is Tina doing work ?
Explanation : Tina is doing work all of the time because whiles she’s pulling and allowing the rope to be pulled her body using muscles to keep herself upright and a firm grip on the rope.
Answer:
whenever she pulls the puppy toward her
Explanation:
17. A simple machine made up of a slanted surface such as a ramp or stairs is called
A wheel & axle
B wedge
C pulley
inclined plane
Answer: Inclined Plane.
Explanation:
Inclined plane is a ramp or stairs.
Write a short summary about Half-Life Model
Answer:
Half-Life is a first-person shooter that requires the player to perform combat tasks and puzzle solving to advance through the game. Unlike most of its peers at the time, Half-Life used scripted sequences, such as a Vortigaunt ramming down a door, to advance major plot points.
Explanation:
Answer: this might be to long
Explanation: The book begins by starting off with the life story of Willie Chandran's dad, in India. Willie Chandran's father was part of an affluent family with positions high up in the government, starting from when his grandfather first landed a job working for the king, which was then succeeded by that grandfather's son, which was finally supposed to be succeeded by Willie Chandran's dad. However, Willie Chandran's dad was not content with this bland life of government work in the tax office, despite the numerous promotions he was receiving on the basis of his father's name. He was even supposed to be married to the daughter of the principal at an extremely prestigious school. This too meant nothing to him. What really mattered was the independence movement taking place across the country, led by Mahatma Gandhi. Heeding the calls of Mahatma Gandhi, Willie Chandran's dad decided to break from his family's heritage and married a poor woman of low caste. This leads to the birth of Willie and his sister Sarojini.
This union led to a life of regret for Willie Chandran's dad and Willie. He grew up ashamed of his family background and despised his father for his character. Willie loved his mother but soon even that relationship started to distance itself. At 18, struggling with his sense of who he really was, he leaves India for London on a scholarship to study at a University. It was a scary life for him, completely foreign to the life he was used to. Willie had to change all his habits and manners, and make himself more snobbish and pompous to fit the style of behavior at the University. He was also confounded with a new sense of freedom and used that freedom to explore himself. Willie gains confidence and a few friends like Percy Cato, who try to help him conquer his own self-doubt through sexual adventures. He often falls for the girlfriends of his friends and is often agitated and unsure of himself. Throughout this process he captures the art of writing and publishes a book, a collection of short stories he wrote. After months he finally gets a response from a fan, a woman named Ana, and falls in love with her. Ana makes him feel confident and secure as she accepts him for who he is. Willie doesn't have to hide his background or personality and with no better option after his scholarship terminates, he marries Ana and moves to the Portuguese colony in Africa where Ana's grandfather had established a mighty estate house through his wealth.
When Willie arrives there, he knows he made a mistake. This life with Ana is not for him. But he stays for 18 years. 18 long and tumultuous years. Willie learns the language there and takes his role as head of the estate. He and Ana are in love but slowly we see this love wither away. They become friends with the nearby estate owners and seem like a great couple but a rift is slowly opening up between the two of them. Willie once more tries to find himself through his friends and various sexual adventures. It started off as a one-time thing but Willie slowly begins to repeatedly visit the places of pleasure. Even this leaves him feeling haunted and empty. He tries to go to the port city nearby and find something meaningful in his life but there is noting there for him. A new couple move in near Willie and Ana's estate house and Willie falls in love with the woman who moved there, Graca. He makes love to her many times but never sees her again after the guerrilla fighters kill Graca's husband. Life is unsteady and nobody knows how everything will pan out because of the war. Willie and Ana now sleep in separate bedrooms, but they do talk. Finally, at the age of 41, Willie slips on the front steps of the estate and in the hospital, tells Ana he wants a divorce. He felt like he had done nothing in his life, and lived a life that was not his own.
The neutron is located in the what part of the atom?
Answer:
The neutron can be found in the nucleus of the atom with the proton.
Answer:
The neutron is located in the nucleus of an atom
Explanation:
Atom contain proton , neutron and electron. The electron is found in the outer part of an atom. The electron revolves around the atom. It determines how atom of elements are bonded.
The neutron and proton determines the mass of an atom. The proton number plus the neutron number determines the mass number of an element. The proton and neutron are located in the nucleus of an atom. The proton is usually positively charged while the neutron is neutral.
The neutron is located in the nucleus of an atom and it is neutral. The picture below demonstrates the location of neutron in an atom
A wave travels at a frequency of 387 Hz. What is
the period of the wave?
Final answer:
The period of a wave with a frequency of 387 Hz is found by taking the inverse of the frequency, which yields approximately 0.00258 seconds or 2.58 milliseconds.
Explanation:
The student has asked what the period of a wave with a frequency of 387 Hz is. The period (T) of a wave and its frequency (f) are inversely related. The relationship between period and frequency is given by the formula T = 1/f. So, to calculate the period of a wave with a frequency of 387 Hz, we divide 1 by the frequency.
T = 1/f = 1/387 Hz
When we do the calculation, we find that the period T is approximately 0.00258 seconds, or 2.58 milliseconds.
This concept is central to understanding wave dynamics and is used in various applications, including communications, engineering, and the sciences.
Pls hurry I’m timed Which describes the formation of horizon B?
•Froms at the surface
•features parent material
•undergoes the most change
•forms due to decomposed material
The first one. Hope this helped
What is the mass of a neutron?
1/2,000 amu
1 amu
2,000 amu
1/200 amu
The proton and the neutron both have 1 AMU of mass.
Answer:
B.
Explanation:
People in finance work mostly with:
Insurance
Products
Information
Money
The answer is money. Hope this helps.
Answer:
D: money
Explanation:
What happens when an object has a density greater than that of the surrounding liquid?
it sinks into the liquid
(e.g. water sinks under oil as it is more dense)
Answer: Thus, when an object has a density greater than that of the surrounding liquid then the object will sink into the liquid.
Explanation: Density is defined as mass per unit volume.
Mathematically, [tex]Density= \frac{mass}{volume}[/tex]
This shows that density is proportional to mass of the object, that is, more is density more will be the mass of object.
Defined the term electromagnetic induction and explain how a generator uses electromagnetic induction
Is the production of electricity by magnetic field.
There are two types of generator which is D.C generator . And A.C generator
A.C gen consist of rectangular coil,brushes and permanent magnet
According to the external force mechanical energy used to rotate coil, due to magnetic flux produced by permanent magnet create induced current, this is to according to flemmings right hand rule of electromagnetic induction the rotating coil will produce current
I hope that will help.
Electromagnetic induction is the creation of a voltage by changing the magnetic field in a conductor. Generators use this principle by rotating a coil in a magnetic field to produce electrical energy efficiently.
Electromagnetic induction is the process of creating a voltage in a conductor by changing the magnetic field around it. Generators utilize electromagnetic induction by rotating a coil in a magnetic field, which generates an alternating current emf. This principle is the foundation for various energy generation devices like coal- and steam-fired generators, hydroelectric generators, and wind turbines.
Which weather events can cause damage during a thunderstorm? Check all that apply.
Answer:Heavy rain,Strong winds,Severe lightening
Heavy rain, strong winds and severe lightning are the events which can cause damage during thunderstorm.
Answer: Option A, D and E
Explanation:
Thunderstorm is term given to occurrence of heavy rains accompanied by high sounds and lightening. As the sound is produced due to lightening, that sound is termed as thunder and the presence of heavy rain is termed as storm.
So both together is termed as thunderstorm. Thunderstorm usually occurs due to increase in moisture, temperature and when the heated air molecules are raised upward. During these thunderstorms, the occurrence of heavy rains, flow of strong winds and severe lightening are well known.
So heavy rains can lead to flash flooding and destruction of homes, strong winds will also lead to damage of objects and lightening may cause forest fire. Thus these three events during thunderstorm causes damage.
Which region of the ear gathers information and funnels sound
The outer ear
The inner ear
The middle ear
The cochlea
The outer ear is the part of the ear that takes up the sound waves and funnels them into the canal.
Answer: Option A
Explanation:
The outer ear is a region of the ear that gathers the information and then funnels the sound into the middle ear. The phrase “funnels the sound” means that the waves of sound are converted into vibration.
These vibrations are then changed as the nerve signals by cochlea present in the inner ear. These nerve signals are read by the brain and the information is received.
The speed of a note created by a flute will increase as the speed of sound increases. When a marching band goes outside on a cold day, what would you predict would happen to the note played on a flute?
A) It would decrease because the speed of sound and temperature are proportional.
B) It would increase because the speed of sound and temperature are proportional.
C) It would decrease because the speed of sound and temperature are inversely proportional.
D) It would increase because the speed of sound and temperature are inversely proportional.
The answer is b because im a teacher at apmcota (arthur polly mays
Answer:
a
Explanation:
It would decrease because the speed of sound and temperature are proportional. Sound will travel faster when the temperature increases.
which type of tool was modified to view outer space
Answer:
telescope
Explanation:
Answer:
Astronomical telescope
Explanation:
A telescope is a device used to observe object that are at distant places. It is comprised of lens or mirrors (convex or concave). Light is allowed to pass through it , producing a reflected or a refracted image. The magnification of an image is directly proportional to the len's or mirror's size. A bigger lens produces a magnified and clear image as it allows more amount of light to enter the lens, whereas a smaller lens will produce a smaller image due to its smaller amount of incident light.
Thus, an astronomical telescope is a tool extensively used to view the outer space.
0
1
What is the resistance of a rotating body to changes in angular
velocity called?
a. axis of rotation
b. rotational inertia
c. torque
rotational inertia would be the right answer
The resistance of a rotating body to changes in angular velocity called rotational inertia
Answer: Option B
Explanation:
The rotational inertia of a rotating object resist the changes in the angular velocity of the object. Whenever we try to reduce the velocity of a rotating object or try to stop its motion, we feel a force or kind of resistance in its nature.
This is because an object which rotates through an axis follows the law of inertia exerting a resistance against the external force which tries to change its motion or simply the angular velocity.
Heavier bodies have more rotational inertia as compared to the lighter ones because of its mass. This kind of inertia is known as the “Moment of Inertia” formulated as,
[tex]J_{0}=\sum m_{i} r_{i}^{2}[/tex]
Where,
[tex]J_{0}[/tex] - Moment of Inertia
mi- Mass of the [tex]i^{t h}[/tex] element of the body
[tex]r_{i}[/tex] - distance of the [tex]i^{t h}[/tex] element of the body from the axis of rotation
What is the velocity of an object that has a momentum of 4,000 kg-m/s and a mass of 115 kg? Round to the nearest hundredth.
A. 35.67 m/s
B. 34.78 m/s
C. 37.43 m/s
D. 36.5 m/s
Answer:
B. 34.78 m/s
Explanation:
The momentum of an object is given by:
[tex]p=mv[/tex]
where
p is the momentum
m is the mass of the object
v is its velocity
For the object in this problem, we have
p = 4000 kg m/s
m = 115 kg
So, we can solve the equation to find v, the velocity:
[tex]v=\frac{p}{m}=\frac{4000 kg m/s}{115 kg}=34.78 m/s[/tex]