when is the motor is spinning, most of the power goes into overcoming friction and adding kinetic energy to the wheel. where does all this energy go when you are preventing the wheel from spinning?
Answers
When a motor is spinning, most of the power is utilized to overcome friction and add kinetic energy to the wheel.
However, when preventing the wheel from spinning, the energy is dissipated as heat and sound due to the work done against friction and other resistive forces.
When the wheel is prevented from spinning, the power that would have been used to overcome friction and add kinetic energy is no longer converted into useful work. Instead, it is dissipated as heat and sound. The work done against friction generates heat as the surfaces interact and create frictional forces.
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Related Questions
After hearing about an accident on his normal route, mr. gujral checks for alternate routes to get to work. what type of circuit does this traffic situation model? a series circuit because there is more than one path a series circuit because there is only one path a parallel circuit because there is more than one path a parallel circuit because there is only one path
Answers
The type of circuit does this traffic situation model will be a parallel circuit because there is more than one path.
What is a parallel circuit?A parallel circuit has branches that split the current such that just a portion of it passes through each branch.
The voltage or potential difference between each branch of a parallel circuit is the same, but the currents might differ.
A parallel circuit is having more than one path in order to reach it on time he has to take a different path.
Hence the type of circuit does this traffic situation model will be a parallel circuit because there is more than one path.
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Answer:
C) a parallel circuit because there is more than one path
Explanation:
C) a parallel circuit because there is more than one path
Photosynthesis is a process in which plants prepare food using carbon dioxide, chlorophyll, and water in the presence of sunlight.
Answers
Pls help I really need help w this one Tnks
Answers
Two charges of equal magnitude but opposite sign make up an electric dipole. A quadrupole consists of two electric dipoles placed anti-parallel at two edges of a square as shown below. Sketch the electric field lines generated by this charge distribution +10 nC 0-10 nC -10 nC +10 nC
Answers
According to the question, as an AI text-based model, I'm unable to directly provide visual sketches.
For the given charge distribution, the electric field lines would originate from the positive charges and terminate on the negative charges. Here is a description of the electric field lines for the charge distribution you provided: The positive charge (+10 nC) would have electric field lines radiating outward from it in all directions. The negative charge (-10 nC) would have electric field lines directed inward towards it from all directions. The electric field lines would follow the path from the positive charges to the negative charges, creating an overall dipole pattern. In the case of a quadrupole, where two electric dipoles are placed anti-parallel at two edges of a square, the electric field lines would exhibit a more complex pattern, with multiple pairs of lines connecting the positive and negative charges. It's important to note that the actual shape and pattern of the electric field lines would depend on the exact positions and distances between the charges. A visual sketch or diagram would provide a clearer representation of the electric field lines in this specific case.
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A new car is tested on a 200-m-diameter track. If the car speeds up at a steady 1.5 m/s2, how long after starting is the magnitude of its centripetal acceleration equal to the tangential acceleration
Answers
The time at which the magnitude of its centripetal acceleration equal to the tangential acceleration is 0.123 s.
Time at which centripetal acceleration equals tangential acceleration
Centripetal acceleration, ac = v²/r
Tangential acceleration, a = vt
ac = a
ac = vt
t = ac/v
Recall, ac = v²/r
\(v = \sqrt{a_cr}\)
Where;
r is radius of the path = 100 m\(t = \frac{a_c}{v} \\\\t = \frac{a_c}{\sqrt{a_c r} } \\\\t = \frac{1.5}{\sqrt{1.5 \times 100} } \\\\t = 0.123 \ s\)
Thus, the time at which the magnitude of its centripetal acceleration equal to the tangential acceleration is 0.123 s.
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coma Narrows Bridge across the Puget Sound collapsed. The bridge was a suspension bridge. The wind blowing through the narrows matched the natural frequency of the bridge. This resulted in a large movement of roadway, which eventually caused the bridge to fail. What characteristic of waves caused the bridge to collapse
Answers
Answer:
amplitude
Explanation:
Amplitude is the characteristic of waves which caused the bridge to collapse. Amplitude of a wave is the maximum amount of displacement of a particle occurs in the medium from its rest position. When the frequency of a wave reaches the natural frequency of the bridge, the oscillation of the bridge produce an amplitude where it causing the destruction of the bridge which is called Resonance. So we can say that amplitude is the characteristic of waves which is responsible for the collapse of the bridge.
Answer: C.interference, because constructive interference occurred when the wind frequency matched the natural frequency of the bridge
Explanation:
what happens to molecules when a liquid chnages to solid
Answers
The graphic organizer compares energy transfer in two layers of the sun.
Which labels belong in the regions marked X and Y?
A)
X: Absorbs energy from the core
Y: Takes longer for photons to move through
B)
X: Releases energy to the photosphere
Y: Takes longer for photons to move through
C)
X: Takes longer for photons to move through
Y: Absorbs energy from the core
D)
X: Takes longer for photons to move through
Y: Releases energy to the photosphere
Answers
Answer:
B
Explanation:
Got it right
Answer:
B. X: Releases energy to the photosphere
Y: Takes longer for photons to move through
Explanation:
Right on ED2021, goodluck!
Select the correct answer from each drop-down menu.
Earth's rotation causes the cycle of ____. If Earth began to spin a little bit faster ____.
First Blank:
- seasons
- sunrise and sunset
- high and low tide
Second Blank:
- colder summers
- shorter days
- higher tides
Answers
Answer:
1. seasons
2. shorter days
Explanation:
Earth's rotation causes the cycle of sunrise and sunset. If Earth began to spin a little bit faster, the days would become shorter (shorter days).
What is a galaxy?A galaxy is a large system of stars, stellar remnants, interstellar gas, dust, and dark matter, all held together by gravity. Galaxies come in a variety of shapes and sizes, ranging from small dwarf galaxies with only a few million stars, to massive galaxies with trillions of stars.
The stars in a galaxy are usually organized into various structures, including spiral arms, central bulges, and bars. Galaxies can also contain other astronomical objects, such as planets, moons, asteroids, and comets. The Milky Way is the galaxy in which our solar system resides, and it contains an estimated 100 billion stars.
Here in this question,
Sunrise and sunset on Earth are caused by the rotation of the Earth on its axis.
As the Earth rotates, different parts of the planet are either facing towards or away from the Sun. When a specific location on Earth rotates toward the Sun, it experiences sunrise, and when that location rotates away from the Sun, it experiences sunset. The length of daylight between sunrise and sunset depends on the latitude of the location and the time of year.
Therefore, the correct option for the First Blank: is sunrise and sunset, and for Second Blank: shorter days.
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To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are.
Answers
To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are smaller.
The mathematical sign for light speed, "c," or relativistic speed, is approximately 186,282 miles per second. As a result, relativistic speed refers to the rate at which such effects are crucial for obtaining the proper level of measurement accuracy for the event under consideration. the discrepancies between values computed using relativity-based theories.
sizes of objects, in general, refers to a thing's size or magnitude. More specifically, the terms "geometrical size" or "spatial size" can be used to describe area, volume, or linear dimensions. Mass can also be used to estimate size, particularly when a range of densities is assumed. A file's actual space on a disc is represented by its sizes of objects. A file's logical and physical dimensions can match.
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Can someone please help me with history.
Answers
Answer:
Yes my name is Axelrod I can help you
Deepti was looking at the wire used to light a bulb. She saw that inside the plastic covering, there were thin metallic wires. How do the metal and the plastic help?
A.The metal and the plastic together produce electricity.
B.The metal does not bend and helps to keep the plastic stiff.
C.The metal and the plastic allow electricity to flow through the wire easily.
D.The metal allows electricity to travel easily and the plastic prevents shocks.
Answers
C. The metal and the plastic allow electricity to flow through the wire easily.
What is the importance of metallic wire?A conductor is a material that allows electricity to flow through it easily, with little resistance. Conductors are typically made of metal, such as copper or aluminum, and are used in electrical wires to transmit electrical signals and power.
The thin metallic wires inside the plastic covering are usually made of a conductor, such as copper or aluminum, which allow electricity to flow through them easily. The plastic covering, or insulation, protects the metal wires from touching each other and short-circuiting, which can cause electrical hazards, such as fires or shocks. The plastic also helps to keep the metal wires in place and protected from physical damage.
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Pedro has 72 m&m's. He gives 1/3
of his m&m's to Tomas. How many
m&m's does Pedro have leta
Answers
Answer:
Pedro has 24 M&M's left.
Explanation:
Divide 72 by 3 and you will get 24.
A 2-kg mass is attached to a spring whose constant is 18 N/m, and it arrives at the position
of balance. From
t = 0, an external force equal to
f(t)=2sin2t.
Find the resulting equation of motion.
Answers
The resulting equation of motion for the system is given by m × x''(t) + k × x(t) = f(t), which is 2 × x''(t) + 18 * x(t) = 2 * sin(2t).
What is equation of motion?
The equations of motion are a set of mathematical relationships that describe the motion of objects under the influence of forces. There are different sets of equations of motion, depending on the specific scenario and the type of motion being considered (linear motion, projectile motion, circular motion, etc.). The equations of motion for linear motion, also known as the equations of uniformly accelerated motion.
To find the equation of motion for the system, we start with Newton's second law of motion, which states that the sum of forces acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, the object is the 2-kg mass attached to the spring.
The force exerted by the spring is proportional to the displacement of the mass from its equilibrium position, and it can be expressed as F_spring = -k× x(t), where k is the spring constant and x(t) is the displacement of the mass at time t.
In addition to the force exerted by the spring, there is an external force f(t) = 2 ×sin(2t) acting on the mass.
Applying Newton's second law, we have the equation of motion: m ×x''(t) + k ×x(t) = f(t).
Substituting the given values, m = 2 kg and k = 18 N/m, we obtain 2 ×x''(t) + 18 × x(t) = 2 ×sin(2t).
Therefore, the resulting equation of motion for the system is 2 × x''(t) + 18 × x(t) = 2 × sin(2t).
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Marta gives long, involved answers to every question, even simple ones. She uses technical vocabulary even if the people she is talking to do not understand it. What is the BEST advice Marta’s supervisor could give her?
A.
Use technology to your team’s advantage.
B.
Manage information, not people.
C.
Make sure your networks are strong.
D.
Adapt your communication style.
Answers
The best advice Marta’s supervisor could give her regarding the long answers she is giving is to adapt her communication style (option D).
What is communication?Communication is the concept or state of exchanging data or information between entities.
A communication is said to be effective when the information passed across is perfectly understood by the recipient.
According to this question, Marta gives long and involved answers to every question, even simple ones. She also uses technical vocabulary even if the people she is talking to do not understand it.
This means that the best advice Marta’s supervisor could give her regarding the long answers she is giving, so as to communicate effectively, is to adapt her communication style.
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What net force is required to accelerate a car at a rate of 3m/s^2 if the car has a mass of 2,000 kg?
Answers
Answer:
6000 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 2000 × 3
We have the final answer as
6000 NHope this helps you
During a 980. miles cruise, a ship travelled 590 miles in 7 hours first. Then the ship changed its speed for the rest of the trip. If 13 hours were spent on the whole cruise, what was the speed for the rest of the trip? mph
Answers
Explanation:
The average speed of a modern cruise ship is roughly 20 knots (23 miles per hour), with maximum speeds reaching about 30 knots (34.5 miles per hour).
13-7 = 6 hours remaining
Miles/hours gives miles per hour for rest of trip therefore 390/6 = 65mph.
A charge of 3.23 nC is placed on a solid conducting sphere of radius 2.7 m. What is the electric field magnitude a distance of 3 m from the sphere's center?
Answers
The electric field magnitude at a distance of 3 m from the center of the conducting sphere is E=3.23 N/C, when A charge of 3.23 nC is placed on a solid conducting sphere of radius 2.7 m.
We can consider a spherical Gaussian surface centered at the center of the conducting sphere with a radius of 3 m. Since the conducting sphere is a solid conductor, the charge resides on its surface. The charge enclosed by the Gaussian surface is the charge on the conducting sphere.
The electric field outside a uniformly charged conducting sphere is the same as the electric field due to a point charge with the same total charge at the center of the sphere.
Therefore, we can calculate the electric field magnitude using the formula for the electric field due to a point charge:
\(E=\dfrac{kq}{r^{2} }\)
where E is the electric field magnitude, k is the electrostatic constant (k = 8.99 × 10^9 N m^2/C^2), |Q| is the absolute value of the charge, and r is the distance from the center of the charge.
Substituting these values into the formula:
\(E={ {{9\times 10^{9}\times3.23\times10^{-9}}/3^2\)
\(E=3.23 N/C\)
The electric field magnitude at a distance of 3 m from the center of the conducting sphere is E=3.23 N/C.
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how far does sam land from the base of the cliff? express your answer to two significant figures and include the appropriate units.
Answers
Sam lands 18 m from the base of the cliff. This can be expressed to two significant figures as 18 m (2sf). The units included are meters (m).
What is base?Base is a term used to describe the starting point for any activity or process. When referring to mathematics, it is used to describe a numerical value that is used as a reference from which other values are measured. Base can also refer to the foundation of an organization, the concept on which an activity is based, or the most important ingredient in a recipe. In the world of computing, base is the most basic form of a data element and is a building block for more complex data structures. In architecture, base is the lowermost part of a structure that supports the entire building. In music, base is the underlying rhythm or pattern of notes that provide the foundation for the composition. Base is an important concept in many different disciplines, and understanding its meaning and purpose is essential in order to successfully complete a task.
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What are two ways the brain can be manipulated
Answers
Answer:
Meditation and Positive Thinking
Explanation:
Can anyone help me with this? Will give brainliest if correct!
Answers
Answer:
Explanation:
HELP ME WRITE A ONE PAGE ESSAY TO EXPLAIN THE AUTHOR'S PURPOSE IN WRITING HOM SMART ARE ANIMAL
An full shopping cart with a mass of 100. kg is moving at 5.0 m/s and runs into a stationary shopping cart that is empty (30. kg). After the collision, the full shopping cart is moving at 2.7 m/s. What is the empty shopping cart moving at?
Answers
The empty shopping cart is moving at 7.67 m/s.
What is law of conservation of momentum?According to the law of momentum conservation, momentum is only modified by the action of forces as they are outlined by Newton's equations of motion; momentum is never created nor destroyed inside a problem domain.
Total initial momentum = total final momentum
100 kg ×5.0 m/s + 30 kg ×0 m/s = 100 kg ×2.7 m/s + 30 kg ×v
v = (5.0 - 2.7)(100/30) m/s
= 7.67 m/s.
Hence, the empty shopping cart is moving at speed of 7.67 m/s.
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Please help me !! i am tired i worked all day to bring my grade up whitch i did i just gotta do this last assiment I will give brainlsit when i wake up
Answers
Plutonium= Pu, 94, 244,94,94
Chromium= Cr, 24,52, 24,24
Neon = Ne, 10,20,10,10
Gold= Au, 79,197,79,79
Radon = Ra ,86,222,86,86
Please help!! Thank you<3 This isn't Physics its Sciene please help me :(
Answers
Answer:
The strong - arm team would win because they can excert more thrust on the rope.Explanation:
In this case, gravity is pulling down on them ( both teams ), the strong - arm team is excerting thrust by trying to pull the rope, and you've got the drag of the other team pulling back.
This is easy but help
Answers
1. Distance covered 200 Meters
2. Displacement 100 Meters
3. Displacement from starting position 0 Meters
What is Distance?Distance is the sum of an object's movements, regardless of direction. Regardless of an object's starting or ending position, distance can be defined as the amount of ground it has covered.
Displacement: What is it?Displacement refers to the idea that something has moved or been shifted. The term "displacement" refers to a shift in an object's position.
According to the given information;Solution.1 -Natasha sprints 100m and walks back to the starting position 100m. 100m+-100m= - 200m
Therefore, the answer is 200
Solution.2 - Natasha sprints towards finishing line 100m then her displacement is 100m from starting line.
Solution.3 -Natasha sprints 100m towards Finishing line then walked back to starting line then her displacement is
100m - 100m =0 meters
Therefore the answer is 0 meters
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A rock with a 8 kg mass is tied to a string and swung in a circular path. The 1.8 meter string is tied to a post, and during the motion, the string has a 35° angle with the post. The rock makes 100 rounds in 3 minute. The centripetal force on the ball is __ N.
Answers
The centripetal force of the rock tied to a string and swung in a circular path is determined as 1.65 N.
Angular speed of the rock
The angular speed of the rock is calculated as follows;
ω = 2π N
\(\omega = 35^0 \times \frac{2 \pi \ rad}{360^0} \times \frac{100}{3\min} \times \frac{1 \min}{60 \ s} \\\\\omega = 0.339 \ rad/s\)
Centripetal force of the rockThe centripetal force of the rock is calculated from the product of mass and centripetal acceleration as shown below;
Fc = ma
Fc = m(ω²r)
Fc = mω²r
Fc = 8 x (0.339)² x 1.8
Fc = 1.65 N
Thus, the centripetal force of the rock tied to a string and swung in a circular path is determined as 1.65 N.
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When a mass of 50g is hung from 5cm mark of a uniform metre rule. The rule is found to balance on a fulcrum placed at the 35cm mark. Calculate the mass of the metre rule
Answers
When a mass of 50g is hung from 5cm mark of a uniform meter rule. The rule is found to balance on a fulcrum placed at the 35cm mark. the mass of the meter rule is 25 g.
uniform meter rule is pivoted at the center ( 50 cm )
given that :
m1 = 50g
d1 = 15 cm
m2 = ?
d2 = 30 cm
according to the law of moment ;
clockwise moment = anti - clockwise moment
m2 × 30 cm = 50 g × 15 cm
m2 = 750 g / 30
m2 = 25 g
When a mass of 50g is hung from 5cm mark of a uniform meter rule. The rule is found to balance on a fulcrum placed at the 35cm mark. the mass of the meter rule is 25 g.
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Any planet that you have NOT crossed out above should have a Magnetic Field. Circle any planet above that yoa have NOT crossed out. Do the data in Table 7.3 support your choice(s)? lio 1 No (circle one) TUTORIAL REVIEW QUESTIONS 1. What is (are) the main factor(s) that affect(s) the amount and duration of geological activity on a terrestrial planet? 2. What is (are) the main factor(s) that affect(s) atmospheric conditions on a terrestrial planet? 3. The moons of the giant Jovian planets are small rocky-metal bodies that are, at the largest, about the size of Mercury (but most are smaller). Based on this and what you have learned about the factors that affect geologic activity and atmospheres on similar objects (Terrestrial planets), what geologic and atmospheric conditions would you expect to find on the surface of a typical Jovian moon?
Answers
The main factor that affects the amount and duration of geological activity on a terrestrial planet is its internal heat. This heat is generated through various processes such as radioactive decay and residual heat from planetary formation.
The presence of a molten core and active mantle circulation contributes to geological activity, including tectonic plate movements, volcanic eruptions, and mountain building. Other factors like the planet's size, composition, and distance from the Sun can also influence geological activity to some extent.
The main factors that affect atmospheric conditions on a terrestrial planet are its distance from the Sun, the composition of its atmosphere, and the presence of greenhouse gases. The proximity to the Sun determines the amount of solar energy received, which affects temperature and weather patterns. The composition of the atmosphere, including the presence of gases like oxygen, nitrogen, carbon dioxide, and water vapor, determines the planet's climate and the ability to support life. Greenhouse gases trap heat in the atmosphere, contributing to the greenhouse effect and influencing temperature regulation.
Based on what we know about the factors that affect geologic activity and atmospheres on terrestrial planets, we can expect that typical Jovian moons, being small rocky-metal bodies, would have limited geological activity and thin atmospheres, if any. The smaller size of these moons compared to terrestrial planets means that they have a lower heat-producing capability and less internal energy. Additionally, their lower gravitational forces make it challenging to retain substantial atmospheres. While some Jovian moons may have evidence of geological activity, such as cryovolcanism or tidal heating, they generally exhibit less dynamic geologic and atmospheric conditions compared to larger terrestrial planets.
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which processes could the heating curve be describing? check all that apply. a) boiling. b) condensation. c) endothermic. d) reaction.
Answers
The heating curve could be describing processes such as boiling and endothermic reactions.A heating curve is a graphical representation that shows the changes in temperature as a substance is heated.
It typically consists of two distinct segments: heating and phase change. Boiling is a process where a substance changes from its liquid phase to its gaseous phase. During the heating phase, the temperature of the substance gradually increases until it reaches its boiling point. At this point, the substance undergoes a phase change, and the temperature remains constant until all the liquid has vaporized. Therefore, the heating curve could be describing the process of boiling.
Endothermic reactions are chemical reactions that absorb heat from their surroundings, resulting in a decrease in temperature. If the heating curve represents the temperature changes during an endothermic reaction, we would observe a decrease or plateau in temperature during the reaction, followed by a subsequent increase. Thus, the heating curve could also be describing an endothermic reaction.
Condensation, on the other hand, is the process by which a substance changes from its gaseous phase to its liquid phase. It typically occurs when a gas is cooled down, and the temperature decreases. However, the heating curve represents temperature changes during the heating process, not cooling. Therefore, condensation is not applicable to the heating curve.
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Which country first put a manned spacecraft into orbit?.
Answers
The Soviet Union (now Russia) was the first country to put a manned spacecraft into orbit.
On April 12, 1961, Soviet cosmonaut Yuri Gagarin made history by becoming the first human to orbit the Earth aboard the Vostok 1 spacecraft. This groundbreaking achievement was a result of the Soviet space program's efforts to develop the necessary technology and launch capabilities.
Gagarin's successful orbit marked a significant milestone in space exploration and demonstrated the Soviet Union's prowess in the space race with the United States.
The mission not only showcased Soviet technological advancements but also symbolized a major leap forward in human exploration of space, inspiring future generations of astronauts and scientists worldwide.
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