What is meant by the term resistance?
Answers
Answer:
Definiton 1.the refusal to accept or comply with something; the attempt to prevent something by action or argument
Definition 2. the ability not to be affected by something, especially adversely
Definition 3. the impeding, slowing, or stopping effect exerted by one material thing on another
Definiton 4: the degree to which a substance or device opposes the passage of an electric current, causing energy dissipation. Ohm's law resistance (measured in ohms) is equal to the voltage divided by the current.
Explanation:
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Related Questions
If the slowest instruction in the SCA executes in 12.5 ns, then what is maximum system clock frequency in MHz
Answers
Since the slowest instruction in the SCA executes in 12.5 ns, the maximum system clock frequency is 80 MHz
To answer the question, we need to know what frequency is.
What is frequency?Frequency is the number of oscillations per second of a wave.
It is given by f = 1/T where T = period of wave
Now, given that the slowest instruction in the SCA executes in t = 12.5 ns, we need to calculate maximum system clock frequency, f.
What is the maximum system clock frequency?So, f = 1/t
= 1/12.5 ns
= 1/(12.5 × 10⁻⁹ s)
= 1/12.5 × 10⁹ Hz
= 0.08 × 10⁹ Hz
= 80 × 10⁻³ × 10⁹ Hz
= 80 × 10⁶ Hz
= 80 MHz
So, the maximum system clock frequency is 80 MHz
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the inside surfaces of the glass inside thermos bottles are coated with aluminum to prevent energy transfers by
Answers
Answer:
radiation heat.
Explanation:
That is any heat that passes through the air, like the sun.
Answer:
radiation
Explanation: I’m sure
pls mark as brainliest if possible
what would become of the earth's orbit if half of the sun's mass were to suddenly disappear
Answers
If half of the sun's mass were to suddenly disappear, the gravitational force exerted by the sun on the planets, including Earth, would decrease.
This would cause the Earth's orbit to change, as it would no longer be held in its current position by the same gravitational force. The exact nature of this change would depend on a variety of factors, including the velocity and direction of the Earth at the time of the mass loss, and the gravitational influences of other bodies in the solar system.
However, it is likely that the Earth's orbit would become more elliptical, meaning that it would be less circular and more stretched out. This could potentially have significant implications for the Earth's climate and seasons, as well as for the stability of the entire solar system.
If half of the Sun's mass were to suddenly disappear, Earth's orbit would be affected significantly. The gravitational force between the Earth and the Sun, which keeps Earth in its orbit, would be reduced. As a result, Earth's orbital path would likely become more elliptical, causing increased variations in temperature and climate. Additionally, the Earth could potentially move further away from the Sun, leading to a colder average temperature on the planet.
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The rate of change in revenue for DIRECTV from 2004 through 2013 can be modeled by dR/dt = 3.17 - 6.671/t where R is the revenue (in billions of dollars) and t is the time (in years), with t = 4 corresponding to 2004. In 2010, the revenue for DIRECTV was $24.1 billion.
Answers
The revenue for DIRECTV in 2013 (after 9 years) was $40.162 billion.
The given equation, dR/dt = 3.17 - 6.671/t, represents the rate of change in revenue for DIRECTV, where R is the revenue (in billions of dollars) and t is the time (in years), with t = 4 corresponding to 2004.
To find the rate of change in revenue from 2004 through 2013, we need to substitute t = 9 in the given equation (as the time period from 2004 through 2013 is 9 years).
dR/dt = 3.17 - 6.671/9
dR/dt = 2.496
This means that the rate of change in revenue for DIRECTV from 2004 through 2013 was 2.496 billion dollars per year.
Given that the revenue for DIRECTV was $24.1 billion in 2010, we can use this information to find the revenue in 2013 (after 9 years).
To do this, we need to use the initial condition that the revenue in 2004 (when t = 4) was also $24.1 billion.
Using the equation dR/dt = 3.17 - 6.671/t, we can integrate it to get an expression for the revenue as a function of time:
R = 3.17t - 6.671ln(t) + C
Using the initial condition that R = $24.1 billion when t = 4, we can solve for C:
$24.1 billion = 3.17(4) - 6.671ln(4) + C
C = $17.027 billion
Therefore, the expression for the revenue as a function of time is:
R = 3.17t - 6.671ln(t) + $17.027 billion
To find the revenue in 2013, we substitute t = 9:
R = 3.17(9) - 6.671ln(9) + $17.027 billion
R = $40.162 billion
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An orange dropped from a tree and had a velocity of 8 m/s just before it hits the ground. How far is the ground from orange's starting position?
Answers
The orange was at a height of 3.26 m above the ground.
State third equation of motion.The third equation of motion is
v² - u² = 2aS
Given is an orange dropped from a tree and had a velocity of 8 m/s just before it hits the ground.
We can write -
[v] = 8 m/s
[a] = 9.8 m/s²
[u] = 0 m/s
Using third equation of motion, we get -
v² - u² = 2aS
64 - 0 = 2 x 9.8 x S
64 = 19.6 x S
S = 3.26 m
Therefore, the orange was at a height of 3.26 m above the ground.
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lan holds a magnet a few centimeters away from a pile of metal washers. The magnetic force on
the washers is strong enough that they slide across the table towards the magnet.
How could lan decrease the magnetic force on the washers?
Answers
lan can decrease the magnetic force on the washers by increasing the distance between the magnet and the pile of metal washers.
What is a magnet?A material or object that creates a magnetic field is called a magnet.
The most noteworthy characteristic of a magnet, a force that pulls on other ferromagnetic elements like iron, steel, nickel, cobalt, etc., as well as the ability to attract or repel other magnets, is caused by this invisible magnetic field.
The strength of the magnetic force produced by a magnet increases when the distance between the magnet and an object experiencing the magnetic force is reduced.
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Un carrusel da 1 vuelta cada minuto. Una mamá se da cuenta que el niño está por caerse y arranca a protegerlo cuando el niño ya le lleva 90 grados de ventaja. ¿Con qué aceleración debe alcanzarlo antes de que el niño complete media vuelta? a)¿Si ambo van en el mismo sentido?b) ¿Si ambos van en sentido contrario?
Answers
The acceleration is of mother before child reaches half a revolution is,
a) 0.42 radians per second squared b) 0.42 radians per second squared
If both are moving in the same direction, the relative velocity of the child with respect to the mother is the angular velocity of the carousel, which is 2π radians per minute. The mother needs to cover the same distance as the child in half the time, so her relative velocity with respect to the child must be twice the angular velocity of the carousel, which is 4π radians per minute.
To calculate the required acceleration, we can use the formula: acceleration = (final velocity - initial velocity) / time. Since the mother starts from rest and reaches a velocity of 4π radians per minute, the final velocity is 4π radians per minute. The time to cover half a revolution is 30 seconds. Therefore, the acceleration required for the mother to catch up with the child is,
acceleration = (4π - 0) / 30 = 4π/30 ≈ 0.42 radians per second squared
If both are moving in opposite directions, the relative velocity of the child with respect to the mother is the sum of their individual angular velocities. Since the mother is moving in the opposite direction to the carousel, her angular velocity is -2π radians per minute. Therefore, the relative velocity is (2π - (-2π)) = 4π radians per minute.
Using the same formula as before, the acceleration required for the mother to catch up with the child is,
acceleration = (4π - 0) / 30 = 4π/30 ≈ 0.42 radians per second squared
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--The complete question is, A carousel completes 1 revolution every minute. A mother realizes that her child is about to fall and starts moving to protect him when the child already has a 90-degree lead. What acceleration must she reach to catch up with him before the child completes half a revolution? a) If both are moving in the same direction? b) If both are moving in opposite directions?--
What is one way that kinetic energy might be involved in rescue team missions?
Answers
Will the following pairs of atomic orbitals interact constructively, destructively, or with no net overlap if they approach along the indicated axis?.
Answers
If the atomic orbitals are oppositely charged and are out-of-phase combinations then they interact destructively.
In Chemistry, molecular orbital theory(MOT) indicates the design of electron movement in a molecule.
The theory also states that electrons have wave-like nature which occurs as a result of the combination of the atomic wavefunction.
Theory suggests that there are two types of orbitals in a molecule: bonding orbitals (BO) and anti-bonding orbitals(ABO).
More are the chances of molecule stability if the electrons are present in bonding orbitals rather than anti-bonding orbitals.
Molecular orbitals are produced by the overlapping of atomic orbitals. When only the crusts of waves overlap in molecule orbitals they form constructive interference while overlapping of troughs causes destructive interference.
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What is the total energy that the ball has when the launcher is in the ""ready to launch"" position with the spring fully compressed?
Answers
How many week are in .62 years?
Answers
Answer:
32.32857
Explanation:
Searched on the web
True or false
7. Sliding friction keeps you in the seat when a car goes around a comer.
Answers
Answer:
true i cant explain it tho
Answer:
false
Explanation:
The Direction Of The Unbalanced Force.
rub a metal paper clip with a magnet. What happens when
you touch another paper clip with your magnetized paper clip?b
Answers
It attract when we touch another paper clip with your magnetized paper clip.
magnet, anything that can generate a magnetic field around itself and attract iron. By the end of the 19th century, every known element and several compounds had undergone magnetism tests, and it was discovered that every one of them possessed some magnetic properties. Iron, nickel, and cobalt are the only three elements that exhibit ferromagnetism.
Hysteresis, a lag in reaction to shifting forces due on energy losses from internal friction, is a property shared by all ferromagnetic materials. A loop of the kind illustrated in the accompanying figure is produced when B is measured for different values of H and the results are graphically shown. This loop is known as a hysteresis loop.
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Frozen lakes often have liquid water beneath their icy surfaces primarily because
a) Earth's internal heat keeps the water liquid
b) ice floats and provides insulation to the water below
c) sunlight penetrates the ice and warms the water below
Answers
Frozen lakes often have liquid water beneath their icy surfaces primarily because ice floats and provides insulation to the water below.So option b is correct.
Frozen lakes are natural water bodies that freeze during the winter season when the temperature drops below the freezing point of water. When water freezes, it forms ice, which floats on the surface of the lake. The thickness of ice on the lake surface depends on several factors such as temperature, wind, snowfall, and sunlight. The surface ice is thicker in areas with less sunlight and strong winds, while the ice is thinner in areas with more sunlight and calm winds.Why do frozen lakes have liquid water beneath their icy surfaces?Ice is a poor conductor of heat, which means that it does not transfer heat easily. Therefore, the ice layer on the surface of a frozen lake acts as an insulating layer, keeping the water below from freezing completely. In other words, the ice on the surface of the lake protects the water below from losing heat to the atmosphere and keeps it at a temperature above the freezing point. Hence, liquid water remains beneath the icy surface of a frozen lake.
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1.) What is the equation for Average Speed?
Answers
2. a race car is moving with 53 km/h and starts accelerating at a rate of 3.4 m/s2. after traveling 40 seconds at that acceleration rate, the driver applies the brakes and changes the acceleration to 4.6 m/s2. how far the car travels to its complete stop after the breaks were applied?
Answers
The car travels approximately 150.65 meter distance to completely stop after applying the breaks.
First we need to consider both its initial velocity and its acceleration. initial velocity is 53km/h and acceleration is 3.4 m/s². If we convert velocity into m/s, 53km/h = 53×5/18 = 14.72 m/s.
So by the end of 40 seconds the final velocity will be 14.722 + (3.4 x 40) = 95.02 m/s . Now we know initial velocity = 14.72 m/s and final velocity = 95.02 m/s.
When the driver applies the brakes, it changes the acceleration to 4.6 m/s². So now acceleration is -4.6 m/s².
The distance that the car travels can be calculated using the equation for average velocity:
distance = (initial velocity + final velocity) / 2 × t
where t is the time taken for car to completely rest.
We know, velocity final= Velocity initial + a × t . So if velocity final is zero and solving for t,
0 = 95.022 - 4.6t
t = 95.022 / 4.6 = 20.67 seconds
Finally, we can use the equation for average velocity to determine the distance traveled:
d = (14.722 + 0) / 2 × 20.67 = 150.65 meters
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What would be the acceleration in m/s2 of a 15 kg object if it is pushed with a net force of 105 N?
Show work:
Answer:
Answers
Answer:
The answer is 7 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
\(a = \frac{f}{m} \\ \)
f is the force
m is the mass
From the question we have
\(a = \frac{105}{15} \\ \)
We have the final answer as
7 m/s²Hope this helps you
a wrench cm long lies along the positive -axis and grips a bolt at the origin. a force is applied in the direction at the end of the wrench. find the magnitude of the force needed to supply of torque to the bolt.
Answers
A 30 cm long wrench is positioned at the origin, along the positive y-axis, and is holding a bolt. Just at end of the wrench, a force is exerted in the direction of "0, 3, and 4"
What does force in physics mean?
You can also use words like extend and squeeze to describe force. Force is described in physics as the pull or push that causes a massed object to change its speed. Force is an outside agent that has the power to alter a body's resting or moving position.
What function does force serve?
For instance, if there is no opposition, force is defined as the interaction that modifies an object's motion. When we look attentively at this sentence, we can see how push-pull plays a part in it. A pull is defined as a force that causes an object to move closer to you. On the other side, it is a shove if it travels away.
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The ecliptic crosses the celestial equator on the celestial sphere at points called.
Answers
The ecliptic crosses the celestial equator on the celestial sphere at points called equinoxes.
The celestial equator is a circle projected onto the sky's celestial sphere halfway between the celestial poles and perpendicular to the celestial axis.
The ecliptic, on the other hand, is the circle across which the apparent path of the Sun appears to travel over the course of a year on the celestial sphere.
In the sky, the celestial equator and the ecliptic intersect each other. These intersections are known as the equinoxes.
The vernal equinox is the intersection point of the Sun's path with the celestial equator, which occurs around March 20th or 21st each year.
Summary: The points where the ecliptic crosses the celestial equator on the celestial sphere are known as equinoxes. The vernal equinox occurs around March 20th or 21st each year, while the autumnal equinox occurs around September 22nd or 23rd each year. They are important reference points in astronomy and are used in creating calendars and astrological charts.
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A bird is flying in a straight line initially at 10m/s. It uniformly increases its speed to 15m/s while covering a distance of 25m. What is the magnitude of the acceleration of the bird?
Answers
15^2 = 10^2 + 2 a 25
225 = 100 + 50a
50a = 125
a= 2.5 m/s^2
Waterslide ride leaves the pool! The man in the innertube speeds down the waterslide at 34m/s. His entire ride, from the slide to stopping on the sidewalk, was 7 seconds long. What was his deceleration? (Show work)
Answers
Answer:
His deceleration is \(-4.857\) \(m/s^{2}\).
Explanation:
The formula for acceleration is
\(a=\frac{v_{f}-v_{o} }{t}\)
We are given \(v_{f}\), \(v_{o}\), and \(t\).
Lets solve for \(a\).
\(a=\frac{0-34}{7}\)
\(a=\frac{-34}{7}\)
\(a=-4.857\)
Ellie conducts an investigation to determine if size or weight affect how fast objects fall. Her investigation includes repeatedly dropping a basketball and a golf ball at the same time. After many trials, she determines that both balls land at the exact same time.
Why would Ellie's investigation be valid?
It is based on evidence.
It uses objects that move.
It proves her predictions are correct.
It includes her opinion.
Answers
Answer: The answer is A
Explanation: I have the same exact question as you and i took a quiz with this exact question and it said that was the answer and i also took a quizlet with this question and it also said the answer was A hope this helped :)!
The repetition of the experiment allows to support the results, therefore the correct answer is:
based on experimental evidence
The theory is a set of rules, principles and knowledge that are developed from models and experiments that are carried out repeatedly, finding similar results in any given case.
In this case, Ellie repeated each experiment several times, finding results that lead to the result that the two balls hit the ground at the same time, therefore her conclusions are supported by experimental evidence.
In conclusion the conclusions of the experiment of dropping the balls the correct answer is: it is based on the experimental evidence
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What is the frequency of an electromagnetic wave that has a wavelength of 2.2 x 10^-2 m?
Answers
With a wavelength of 2.2 x 10^-2 m, the frequency of the electromagnetic wave is 1.36 x 10^10 Hz.
The frequency of an electromagnetic wave can be calculated using the formula:
frequency = speed of light / wavelength
The speed of light is a constant value of approximately 3 x 10^8 meters per second. Therefore, to find the frequency of an electromagnetic wave with a wavelength of 2.2 x 10^-2 m, we can plug these values into the formula:
frequency = (3 x 10^8 m/s) / (2.2 x 10^-2 m)
frequency = 1.36 x 10^10 Hz
Therefore, the frequency of the electromagnetic wave with a wavelength of 2.2 x 10^-2 m is 1.36 x 10^10 Hz.
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At a distance of 19 m from a sound source the intensity level is 98 dB. What is the intensity level (in dB) at a point 3.7 m from the source
Answers
The intensity level at a point 3.7 m from the source is 106.7 dB.
The intensity level of sound is typically measured in decibels (dB) and is related to the distance from the sound source.
The inverse square law states that the intensity of sound decreases proportionally to the square of the distance from the source.
To calculate the intensity level at a new distance, we can use the equation:
IL2 = IL1 + 20log₁₀(r₁/r₂),
where IL1 is the initial intensity level,
r₁ is the initial distance,
r₂ is the new distance, and
IL2 is the new intensity level.
Given that the initial intensity level is 98 dB at a distance of 19 m, we can substitute these values into the equation:
IL2 = 98 + 20log₁₀(19/3.7)
= 98 + 20log₁₀(5.135)
Evaluating the logarithm and performing the calculations, we find:
IL2 ≈ 106.7 dB.
Therefore, the intensity level at a point 3.7 m from the source is approximately 106.7 dB.
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How does water temperature affect density?
Answers
What is the radius of the sphere gizmos
Answers
The radius of a sphere is the distance between the centre point of the sphere to the surface of the sphere.
r = d / 2
A = 4 π r²
r = √ ( A / 4 π )
V = 4 / 3 π r³
r = ∛ ( 3 V / 4 π )
r = Radius of the sphere
d = Diameter of the sphere
A = Surface Area of the sphere
V = Volume of the sphere
A sphere is the 3-dimensional form of a circle. Since the radius of the sphere is a measure of length, its unit is usually meter.
Therefore, the radius of a sphere is the distance between the centre point of the sphere to the surface of the sphere.
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Where is friction as this ball rolls?
There is friction between the hands and the air.
There is friction between the hands and the table.
There is friction between the soccer ball and the table.
There is friction between the top and bottom of the soccer ball.
Answers
Answer:
there is friction between the soccer ball and the table.
Explanation:
there is a friction between the table and the ball the friction opposing motion.there is reaction and action force a frictional force which acts against motion.
Answer:
B. bc I used it worked for me >:>
If the mass of the coaster car is 50 Kg and the height of the car at position 4 is meters,
and the car is moving at 2 m/s at position 4, what is the mechanical energy of the
system?
Answers
= (50x9.8x4) + (1/2 x 50 x 4)
= 1960 + 100
= 2060 Joules
What is the cause of the aurora borealis (the northern lights)?
a. As the Earth moves through the solar magnetic field, a voltage is built up between the south and north magnetic poles. b. This voltage accelerates charged particles to collide with both poles, thus causing the atmosphere to glow.
c. The northern lights are reflections of fluorescent lights from large cities off clouds in the arctic. Electrons in the Van Allen radiation belts flip over their spin direction and emit light.
d. The Earth's magnetic field guides trapped charged particles to follow field lines toward the poles, where they collide with the atmosphere, causing a glow.
Answers
The cause of the aurora borealis (the northern lights) is the Earth's magnetic field guides trapped charged particles to follow field lines toward the poles, where they collide with the atmosphere, causing a glow. Option d.
The other options: As the Earth moves through the solar magnetic field, a voltage is built up between the south and north magnetic poles; This voltage accelerates charged particles to collide with both poles, thus causing the atmosphere to glow; The northern lights are reflections of fluorescent lights from large cities off clouds in the arctic. Electrons in the Van Allen radiation belts flip over their spin direction and emit light are all incorrect. Therefore the correct answer is option d.
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Correct statement is b. This voltage accelerates charged particles to collide with both poles, thus causing the atmosphere to glow.
How does aurora borealis occur?The cause of the aurora borealis, or the northern lights, is primarily described by option b. When the Earth moves through the solar magnetic field, it creates a voltage between the south and north magnetic poles.
This voltage accelerates charged particles, mainly electrons, in the Earth's magnetosphere. These accelerated particles then collide with atoms and molecules in the Earth's upper atmosphere, resulting in the emission of light. The glowing phenomenon of the northern lights is a direct consequence of these collisions.
The colors observed in the aurora are determined by the type of gas particles present in the atmosphere and the altitude at which the collisions occur. Hence correct statement is b. This voltage accelerates charged particles to collide with both poles, thus causing the atmosphere to glow.
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A fully charged HV battery should show voltage levels to within ______% of specifications.
Answers
A fully charged HV battery should show voltage levels to within 3% of specifications.
A High Voltage (HV) Battery is an electric vehicle's most crucial component. HV batteries are responsible for propelling electric cars by producing power. As a result, a fully charged HV battery should display voltage levels to within 3% of the specifications to provide maximum performance and lifespan. The voltage levels of the HV battery are monitored by the Battery Management System (BMS) (BMS).The Battery Management System (BMS) (BMS) is the electric vehicle's computerized system that monitors the battery's performance, safeguards it against damage, and informs the driver of any system issues. The BMS uses voltage and current sensors to monitor the battery's state of charge and power output in real-time. The Battery Management System (BMS) calculates the battery's available power and energy and its state of charge based on the monitored data.The Voltage level of a battery shows the strength of the battery. If a battery's voltage level is low, it means that the battery is weak and will not last long. Therefore, a fully charged HV battery should show voltage levels to within 3% of specifications to provide the best performance and lifespan. Any deviation from this range will decrease the battery's overall performance and lifespan.
A fully charged HV battery should show voltage levels to within 3% of the specifications to provide maximum performance and lifespan. The Battery Management System (BMS) monitors the voltage levels of the battery to ensure that it is functioning correctly. If the battery's voltage level is below the specified range, it will impact the battery's overall performance and lifespan.
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