what is an electric current
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Related Questions
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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Please help: The average depth of water in a place near the coast of th Pacific ocean is 5.om. The largest tidal range in that place is 2.0m. Calculate the maximum depth of water at that place. please do not attempt to steal points... thank you <3!
Answers
Answer:
The maximum depth of the water at the place is 6.0 meters.
Given the tidal range and average depth, it is to be noted that the maximum depth of the water at the place, is 6.0 meters.
How can you calculate Maximum Depth using Average Depth and Tidal Range?The tidal range is the successive difference between tide highs and lows, which is a sinusoidal pattern. On the basis of the above, it is correct to state that the tidal range is twice of the amplitude of the tide level.
That is:
The Amplitude of the tide, A = 2.0/2m = 1m
The maximum depth at the place, therefore, is given as:
D\(_{max}\) = A + D\(_{ave}\)
Hence,
D\(_{max}\) = 1.0 + 5.0 = 6.0
Thus, it is correct to state that the Maximum Depth (D\(_{max}\)) = 6.0 Meters.
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If two forces act on an object in the same direction, the net
force is equal to the
of the two forces.
Answers
Answer:
yes, the net force is equally two forces sorry I am just try this question about
Explanation:
l don't knowAnswer:
sum
Explanation:
If two forces act on an object in the same direction, the net force is equal to the sum of the two forces.
Which of the following statements is correct with regard to convection currents?
A. Convection currents in magma are caused by color differences.
B. Convection currents in magma drive the movement of tectonic plates.
C. Convection currents in magma are a result of how the magma is formed.
D. Convection currents in magma play a role in the movement of Earth's inner core.
Answers
Answer:
A.convection currents in magma are caused by color differences
The thermal conduction we find that the correct answer is:
a) Convection currents in magma are caused by hot differences.
Thermal conduction occurs in three ways
Conduction. When two material are in thermal contact with different temperatures, energy flows from the hottest material to the coldest, in this there is no material movement Radiation. Due to the absorption of radiant energy between bodies with different temperatures, it does not need physical contact, which is why it is the form of transmission in a vacuum. Convention. This occurs when a mass of liquid or gas is in contact with another colder mass and the material of the hotter mass moves upward in the cold mass, this form of heat transfer includes the movement of material, it is very important in liquid and gases.
The magna of volcanoes is a quantity of matter in a liquid or plastic state due to the thermal energy of the interior of the earth, when this mass reaches a colder and fissured area, it can rise towards the coldest part, breaking and deritating. the materials in its path.
Let's annotate the different statements
a) True. According to the explanation, the temperature of the magna causes it to rise due to convection currents.
b) False. The cracks are those that help the convection currents, in general the movement of the plates creates cracks
c) False. The movement of the plates is independent of the convection of the magna which is approximately vertical
d) False. The core of the planet is very deep (> 4000 km) and the magna currents reach about 14 to 20 km
In conclusion using the forms of thermal conduction we find that the correct answer is:
a) Convection currents in magma are caused by hot differences.
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please help me
The symbol P represents the element phosphorus. This element’s atomic number is 15. How many protons and electrons are in a P–3 ion?
15 protons and 3 electrons
12 protons and 15 electrons
15 protons and 18 electrons
18 protons and 15 electrons
Answers
Answer:
15 protons and 18 electrons
General Formulas and Concepts:
Chemistry
Reading a Periodic TableElement NumberNeutral AtomsIonsExplanation:
We are given the element P. P is 15 on the Periodic Table, meaning it has 15 protons and 15 electrons (all elements are in neutral form).
P³⁻ ion means the element now has a negative charge of 3. We know protons have a positive charge and electrons have a negative charge. 3- means we will have more electrons than protons.
Therefore, P³⁻ would have 15 protons and 18 electrons:
15 (+) + 18 (-) = 3 (-)
Which of the following statements is true?
Thermal pollution is the main disadvantage of hydroelectric power.
The total amount of water in an ecosystem is always increasing.
Wood and water are nonrenewable natural resources.
The greenhouse effect is primarily caused by cars and trucks.
Answers
Answer:
I think it’s d “The greenhouse effect is primarily caused by cars and trucks.”
Explanation:
Thermal pollution is the main disadvantage of hydroelectric power.
The total amount of water in an ecosystem is always increasing.
Wood and water are nonrenewable natural resources.
The greenhouse effect is primarily caused by cars and trucks.
HURRY! Match each action with the charging method it demonstrates:
Rubbing a balloon on hair:
charging by
friction
conduction or induction
Touching a metal sphere with a negatively charged rod:
charging by
friction
conduction
induction
Moving a negatively charged rod near a metal sphere that is grounded:
charging of friction
conduction
or induction
Touching a metal sphere with a positive aluminum plate:
charging by friction
conduction
or induction
Answers
Answer: first one: a second: b
3rd: induction
4rth:conduction
Explanation:
i had these question
As the Earth orbits the Sun, it gets closer to the Sun at times. This is what causes summer.
A. True
B.false?
Answers
The earth rotates while orbiting around the sun causing summer.
Answer:
true heres why
Explanation: because you feed the butterfly falafel again with a sock from a froot loops box
and you made something come out of your but
Please can someone help me need help with these 5 questions!! and QUICK!
I need it done REALLLLLYYYYY soon!! (more like now but-)
(20 points for the answer to all of them)
Answers
Answer:
10. dependent as a change has occurred which has affected something else which is measurable.
11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.
12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.
13. Dependent as the animal's and plants' survival is reliant on the environment.
14. Dependant as the plants require sunlight for photosynthies
Answer:
All are dependent
Explanation:
What’s the kinetic energy of the roller coaster at the top and bottom of the hill? Use .
A kiddie roller coaster car has a mass 100 kilograms. At the top of a hill, it’s moving at a speed of 3 meters/second. After reaching the bottom of the hill, its speed doubles. The car’s kinetic energy at the bottom is ______
its kinetic energy at the top. The car has ______
joules of kinetic energy at the bottom of the hill.
Answers
Answer:
The car’s kinetic energy at the bottom is 4 times its kinetic energy at the top. The car has 1800 joules of kinetic energy at the bottom of the hill.
Explanation:
Answer:
A kiddie roller coaster car has a mass 100 kilograms. At the top of a hill, it’s moving at a speed of 3 meters/second. After reaching the bottom of the hill, its speed doubles. The car’s kinetic energy at the bottom is quadruple its kinetic energy at the top. The car has 1,800 joules of kinetic energy at the bottom of the hill.
Explanation:
I just took a Post Test on Edmentum over Energy :)
Good Luck!! :D
How does the agricultural activity most likely affect the surface water of the area?
Answers
Answer:
Agriculture has been the cause of significant modification of landscapes throughout the world. Tillage of land changes the infiltration and runoff characteristics of the land surface, which affects recharge to ground water, delivery of water and sediment to surface-water bodies, and evapotranspiration.
Explanation:
After water is heated up, its thermal enrgy becomes what energy?
Answers
After water is heated up, its thermal energy becomes kinetic energy. Kinetic energy is the energy of motion, and when water is heated, the energy of the heat causes the molecules in the water to move faster. This increase in movement results in an increase in kinetic energy.
Heat is a form of energy that is transmitted between two objects or systems that are at different temperatures. When heat is added to a substance, such as water, it increases the kinetic energy of the molecules in the substance, causing them to move faster and resulting in an increase in temperature. The thermal energy of the water is converted into kinetic energy as the molecules move faster and the water becomes hotter.
It is important to note that the transfer of heat between objects or systems is governed by the laws of thermodynamics, which dictate how energy can be transformed and exchanged.
Hope this helps
What type of coal has the highest carbon content? 1.Sub-bituminous coal 2.Bituminous coal 3.Anthracite coal
Answers
Answer:
Anthracite coal contains the highest carbon content.
What is an explanation for conduction?
Answers
Answer:
Conduction definition Conduction is the thermal or electrical energy transfer through matter by direct contact between atoms or particles. The matter itself does not move, but thermal or electrical energy is conducted through the material.
Explanation:
A woman is walking at 4 m/s. She is accelerating at a rate of 1 m/s2. To find out what her velocity is after 3 seconds, what else do you need to know?
Answers
Answer:
distance
Explanation:
Black to move and capture a hanging piece . Select the best move
A) Nxg3
B) Bxg3
C) Qxg5
Answers
Answer: A
Explanation:The Pawn moves directly forward, never backward or to the side. Pawns capture a piece that is one square diagonally forward. Though Pawns normally cannot move diagonally, this is the only way they capture.
Based on the information provided, the best move to capture a hanging piece would be: A) Nxg3
What would be the best move to capture a hanging piece ?Nxg3 would be the best move to capture a hanging piece.
This move involves sacrificing the knight to capture the hanging piece, which could be a bishop or pawn, depending on the position of pieces. After Nxg3, the opponent may capture the knight with different piece, but the player who made the move will have successfully captured the hanging piece.
However, it's important to note that the best move ultimately depends on the overall strategy of the player and the position of the other pieces on the board.
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4. The Himalayan Mountains tower as high as 8,854 m above sea level. The rate of plate motion is about 10 cm per year. Use the diagram to explain how the Himalayas formed. Predict how they might look in 10 million years.
Answers
Answer:
Forty million years ago, the continent of India, which was being carried northward by the Indo-Australian plate, collided with Asia forming the Himalayan mountain range (fold mountains). Since the initial encounter, the subcontinent of India has moved 2,000 kilometers farther north at a rate of 5 centimeters a year, sliding beneath Asia as it moves. In 10 million years India will plow into Tibet a further 180km. This is about the width of Nepal.
Answer:Since the initial encounter, the subcontinent of India has moved 2,000 kilometers farther north at a rate of 5 centimeters a year, sliding beneath Asia as it moves. In 10 million years India will plow into Tibet a further 180km. This is about the width of Nepal.
True or False? If the ball hits any line when it is NOT on the serve, it is in bounds. Pickle Ball for PE
Answers
Answer:
Well according to volleyball rules, if the ball hits the out of bounce line, its considered in.
answer question 2 please
Answers
PLEASE HELP LINE GRAPH-SCIENCE
Answers
Answer:
answer is B.
Explanation:
The reason it is B. is because line graphs show data through a period of time.
1 sentence telling me the topic of the story. In your own words.
3 sentences you copy straight from the magazine with "quotation" marks around it. This sentence proves that the topic is what you stated in the first sentence.
1 sentence telling me the conclusion. In your own words.
3 sentences you copy straight from the magazine with "quotation" marks around it. This sentence proves that the conclusion is what you stated in the sentence above this one
The average woodpecker smashes its beak against a hard surface more than 10,000 times a day. Any human who jolted their head like this would likely end up with a concussion. This traumatic brain injury is caused by a blow to the skull. So why doesn’t the constant hammering turn woodpeckers’ brains into mush? For years, it was assumed that woodpeckers had some kind of cushioning in their heads to protect their brains during pecking. Many scientists suggested that spongy bone in the birds’ skulls absorbed and lessened the shock of each impact (see Myth Buster: Hard Headed). This idea was repeated in scientific articles, textbooks, and informative plaques at zoos. Even though the concept “is often presented like a clear-cut fact, there haven’t been any real tests to prove it,” says Sam Van Wassenbergh. He’s a biologist who studies biomechanics, or how living things move, at the University of Antwerp in Belgium.SHOCK ABSORBER: Van Wassenbergh uses a spring-loaded hammer to show why a shock-absorbing skull would make a woodpecker less efficient at pecking. When you think about it, says Van Wassenbergh, the shock-absorbing skull idea doesn’t make much sense. Woodpecker drills into the wood in search of insects to eat. When the bird’s head accelerates forward, the movement generates kinetic energy. This energy of motion is transferred to the tree when the bird slams its beak against the trunk. If a woodpecker’s skull had to cushion, it would absorb some of this energy and decrease the force of the peck. Why would a bird that survives by pecking evolve to do it less effectively? Van Wassenbergh and his team decided to see what was really going on. First, the researchers recorded videos of woodpeckers’ heads in motion. To capture this rapid movement, the scientists needed special high-speed cameras. Each peck lasts only a fraction of a second! Van Wassenbergh’s team recorded videos of six woodpeckers from three species and analyzed the footage. The researchers used a computer to track three points on each bird’s head: one on the skull and two on the beak. The scientists hypothesized that if the birds’ skulls had shock absorbers, the footage would show a “squishing” of the space between the skull and beak—like when a spring compresses. But that didn’t happen. Instead, the birds’ heads moved as one stiff unit, like a hammer. Next, the team wanted to demonstrate why this adaptation would be helpful to the birds. Using computer models, the scientists simulated woodpecker skulls with and without shock absorbers. Then the researchers compared the force of the pecks. “The pecking performance was greatly reduced in the skull with a shock absorber,” says Maja Mielke, a biologist who worked on the study. With shock absorbers, says Mielke, “the poor birds would need to pound even harder to reach the same results.” For a woodpecker, having a shock-absorbing skull would simply be a waste of energy. Science World originally published this diagram in our May 10, 2021, issue. It was based on scientists’ beliefs about woodpecker anatomy at the time. Here it is again—updated based on new research. MYTH: The skull is made of spongy bone that cushions and protects the brain from impactBUSTED! The skull is hard enough to protect the bird from injury, but it doesn’t cushion The eyes have a special membrane that protects them from flying splinters and wood dust.MYTH: Neck muscles are strong and stiff enough to absorb the shock of each peck BUSTED! Stiff neck muscles do not absorb shock—in fact, they help increase the force of each peck.MYTH: The tongue wraps completely around the outside of the skull, providing an additional level of cushioning, and can extend to probe for food inside holes made by the birdBUSTED! The tongue does not provide any observable cushioning. The beak is connected to the skull with thick bone that prevents jolts and vibrations. NEW RESEARCH SHOWS: The woodpecker’s brain is small, which helps prevent concussions that might occur in a larger animal. If woodpeckers’ skulls don’t absorb shock, then why doesn’t constant pecking damage the birds’ brains? To answer this question, the researchers calculated how harmful the blows from pecking actually are. It turns out the hits aren’t that dangerous because the birds’ brains are so small. “Small masses can tolerate stronger impact forces without being damaged,” says Mielke.
Answers
Answer:
The topic of the story is about how woodpeckers can peck without causing damage to their brains.
"The average woodpecker smashes its beak against a hard surface more than 10,000 times a day."
"This traumatic brain injury is caused by a blow to the skull."
"So why doesn’t the constant hammering turn woodpeckers’ brains into mush?"
The conclusion of the story is that woodpeckers don't get brain damage from pecking because their brains are small, which allows them to handle the force of the pecks.
"Small masses can tolerate stronger impact forces without being damaged,"
"The hits aren’t that dangerous because the birds’ brains are so small."
"To answer this question, the researchers calculated how harmful the blows from pecking actually are."
Explanation:
__________ properties explain how matter changes its identity to form a new substance.
phase
chemical
physical
reaction
Answers
Answer:
chemical properties explain how matter changes its identity to form a new substance.
The chemical properties explain how matter changes its identity to form a new substance. The correct option is B.
What is chemical property?A chemical property is any property of a material that emerges during or after a chemical reaction; that is, any quality that can only be established by changing a substance's chemical identity.
A chemical property is a property of a specific substance that can be observed during a chemical reaction.
Some of the most important chemical properties are flammability, toxicity, heat of combustion, pH value, radioactive decay rate, and chemical stability.
The chemical properties of matter describe how matter changes its identity to form a new substance.
The property of a substance that can be observed or measured when the substance undergoes a chemical change is referred to as its chemical property. A chemical reaction can be used to observe chemical properties.
Thus, the correct option is B.
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The rover Spirit is a robotic probe that NASA has placed on Mars. The
gravitational attraction of Mars is approximately 62% less than that of Earth. Compared to its measurements on Earth, on Mars the probe has
-the same weight and the same mass.
-a larger weight, but smaller mass.
-a smaller mass and larger weight.
- a smaller weight and the same mass.
Answers
Answer:
D) a smaller weight and the same mass is the answer
Explanation:
The rover Spirit is having a smaller weight and the same mass on Mars because of the Strength of Gravity on Mars
The Strength of Gravity depends on the mass of the object as gravity is directly proportional to mass which means more mass more gravity and vice versa
Another example of an object-to-gravity relation is SUN as Sun is the biggest object in the solar system it has the greatest Gravitational pull which is keeping the planets in the solar system intact and in their paths
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Erin is keeping a science journal. She wrote the following paragraph that explains how light travels through different mediums. But she’s made one mistake. Which sentence in Erin’s journal is incorrect?
A ray of light passes through the air and enters the water inside a metal container. The light ray bends as it crosses the boundary between air and water. Once it hits the bottom of the container, the ray gets reflected. The reflected ray passes back through the water and enters the air without bending. In this example, the ray of light is both reflected and refracted.
Answers
Answer: The first part I think
Explanation:
Im not too sure on this one
Can someone explain how they got their answer or how I get the change in number? :(
Answers
Answer:
See Below
Explanation:
Okay, I thinkkk what it is asking by what you summarzied for me issss:
They split the total time into four quarters. They then took (for the first quarter) the start time. Then when the first quarter ends and the second quarter starts is the "end" time.
They then subtract the start time of the second quarter from the end time of the first quarter.
I hope this helps, good luck! :D
The work input = _____.
F i ÷ d i
F o ÷ d o
F o × d o
F i × d i
Answers
The work input = Fi × di
How to solve for work input?To solve for work input, you need to know the force acting on an object and the distance it moves in the direction of the force. Work input is defined as the product of force and distance, given by the formula:
Work Input = Force × Distance × cosθ
Where θ is the angle between the force vector and the direction of motion. If the force is applied in the direction of motion, then θ = 0 and cosθ = 1, so the formula simplifies to:
Work Input = Force × Distance
For example, if you are pushing a box with a force of 50 newtons over a distance of 10 meters, the work input would be:
Work Input = 50 N × 10 m × cos(0°) = 500 Joules
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Answer: F i × d i
Explanation:
Please help! It has to deal with Newton's 3rd law! 30 points! and if right brainliest!
Answers
Answer:
Newton's Third Law
His third law states that for every action (force) in nature there is an equal and opposite reaction
Explanation:
If a fossil contains 50% of the amount of carbon that a living animal contains, how many half lives have passed while it decayed? How old is the fossil? (half lives x 5730)
Answers
Answer:
Carbon 14 has a half life of 5730 years? I think this is right hope it helps!
Explanation:
Tina served the ball directly to Brian with a high amount of force. Since the ball is moving so quickly, Brian does not have much time to hit the ball back. Which skill-related component of fitness is most useful to Brian in this scenario?
power
reaction time
Answers
Where does groundwater come from?
Answers
Hope this helps.
Please mark as brainliest..........
Answer:
Groundwater is the water found underground in the cracks and spaces in soil, sand and rock. It is stored in and moves slowly through geologic formations of soil, sand and rocks called aquifers.
Explanation:
What is Groundwater - Groundwater Foundationwww.groundwater.org the source I got it from