What is the power generated by a 3.7 V cell phone battery that provides 2.0 A of current?
Answers
Answer:
7.4 watt
Explanation:
Power= V× I
= 3.7×2.0= 7.40 watt
Related Questions
Only refer from the community conservation article please. Will mark brainliest!!!!
1. Summarize the scientific information that leads to conservation in each of the articles.
2. What social issues affected the problem or its solution in each of the stories?
3. How did economics delay scientists' first attempts for conservation in each story?
4. Describe the political actions that led to successful conservation in both stories.
Answers
the political actions that led to success conversation in the forest industry is What they call is a FC company that makes the forest industry true they make it out of a factory it can make it very successful and accomplished.
Trees are being felled at an alarming rate by people. Forests are home to numerous animals and people, and by removing trees from them, we are destroying their habitat and depriving them of a safe haven.
What is community conservation?Community conservation refers to a strategy for protecting the environment that acknowledges local residents' rights to manage wildlife or gain both direct and indirect benefits from it.
The gorillas' habitat, the forest, is being destroyed by humans. Additionally, people are harming these creatures, and if this continues, gorillas may become extinct.
There won't be as many resources from trees, like paper, if people cut down less of them, therefore prices could rise.
Prices for tourists will increase if fewer gorillas are still alive. That won't benefit visitors since they will have to pay more, and since some individuals don't have a lot of money, there will be fewer visitors.
Thus, this way, community conservation is mandatory.
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Plssssss help me no one wants to help me——— power plants use generators to generate electricity for homes and businesses. Some generators work by spinning a coil of wire inside a magnet, as shown in the image. To keep the coil of wire spinning, it’s often attached to a turbine, which is s as n axle with fan blades. Different kinds of power plants use different methods to spin the turbine to make electricity. What’s one way a power plant might spin the turbine?
Answers
Answer:
There are a many ways to produce electricity. Electrons can flow between certain different materials providing a current, as in a common battery. While reliable and portable, chemical batteries run down quickly. To provide the large amounts of steady power demanded by modern societies, large power plants have been built. Most power plants make electricity with a machine called a generator.
A 1925 Turbine Rotor
A 1925 turbine rotor for a Westinghouse generator, Image #21.035, Science Service Historical Image Collection, National Museum of American History
Generators have two important parts: the rotor (which rotates) and the stator (which remains stationary). Generators use the principle of electro-magnetic induction, which exploits the relation between magnetism and electricity. In large AC generators, an outer shell with powerful magnets rotates around a stationary "armature" which is wound with heavy wire. As they move, the magnets induce an electric current in the wire.
It is important to recognize that electricity is not mined or harvested, it must be manufactured. And since it's not easily stored in quantity, it must be manufactured at time of demand. Electricity is a form of energy, but not an energy source. Different generating plants harness different energy sources to make electric power. The two most common types are "Thermal Plants" and "Kinetic Plants".
a pumpkin is dropped from a 35 m building. what is its initial velocity
Answers
Answer:
26.2 mps
Explanation:
an airplane has a maximum velocity of 160km/h in still air. calculate its maximum velocity when it travels in air with a crosswind of 30km/h
Answers
Answer:
Velocity can be directly added or subtracted.
For example, if a boat has a velocity V in still water.
And now you put the boat in a river with a current that has a velocity V'
The total velocity of the boat in that river is just the addition of these two velocities.
Velocity in the river = V + V'
Where the only tricky part is that the velocity is a vector, so you need to take in account the directions of each vector.
In this case, we have a plane with a maximum velocity of 160km, let's assume a direction for this velocity, let's say that is in the positive x-direction.
Then we can write the velocity in the vector form:
velocity = (vel in x-axis, vel in y-axis)
The velocity of the plane can be written as:
v = (160km/h, 0)
Now we add a crosswind of 30km/h
crosswind means that it is perpendicular, then it acts on the y-axis.
Then the total velocity of the plane will be:
velocity = (160km/h, 0) + (0, 30km/h)
velocity = (160km/h, 30km/h)
Now you can compute the total velocity of the airplane as the module of that vector.
Remember that for a vector (x, y) the module is:
mod = √(x^2 + y^2)
Then the module of the velocity is:
v = √( (160km/h)^2 + (30km/h)^2) = 162.8 km/h
How do synthetic fibers differ from natural fibers when viewed under a microscope.
Answers
The difference between the natural fibers and synthetic fibers is like synthetic fibers are produced using chemicals while, natural fibers are derived from plants and animals and are appreciated in the textile business for several factors.
What are natural fibers?The fibers that come from natural sources are known as natural fibers. The origins can range from zoological to botanical components. In other words, natural fibers are those that are obtained from plants and animals in their natural state. Wool, silk, hemp, cotton, and linen are a few examples of fabrics that naturally breathe.
What are synthetic fibers?Synthetic fibers are produced through a sequence of chemical processes, as their name suggests. These fibers are produced using a variety of chemical compounds rather than being derived from natural sources.
The creation of tiny molecules known as polymers is the process used to create synthetic, artificial, or man-made fibers. In most cases, raw materials and chemical compounds are used to extract polymers. Nylon, polyester, acrylic, and more are a few examples.
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While on vacation, a student picks up surface rocks from around the world to add to her rock collection. The composition of her rock samples will be primarily
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While on vacation, a student picks up surface rocks from around the world to add to her rock collection. The composition of her rock samples will be primarily determined by the location and geological history of the areas where the rocks were collected.
The composition of rocks includes their mineral content, texture, and structure. Igneous, sedimentary, and metamorphic are the three primary types of rocks. The student's collection will have a diverse range of rocks because rocks from different regions contain distinct minerals, textures, and structures.Sedimentary rocks can form anywhere, and they make up a significant proportion of the earth's surface. Sedimentary rocks, such as sandstone and shale, are formed when sediment is compressed and compacted over time. Metamorphic rocks, on the other hand, are created when rocks are subjected to extreme heat and pressure. These rocks may be found in mountain ranges or areas with high geothermal activity.Igneous rocks form from molten rock that cools and solidifies. The texture and mineral content of igneous rocks vary depending on whether the rock cooled slowly or quickly.
Slowly cooling magma creates large crystals in rocks such as granite and gabbro. Basalt and pumice, which have a more finely grained texture, are formed when magma cools rapidly.The composition of the student's rock samples will be influenced by the regions where they were gathered, the types of rocks in these regions, and the geological history of the areas. The collection will likely include a diverse range of sedimentary, metamorphic, and igneous rocks.
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Use terms from lab & notes to complete the following:
Light passes through a transparent layer, the cornea, which begins to focus light onto inside rear of the eye. Light will then need to pass through the aqueous humor before it passes through the _______,the major focusing structure. The lens is held in place by suspending ligaments attached to a muscle called the________.
Contraction of the ciliary muscles changes the shape of the lens which helps to focus the image onto the retina. The amount of light entering the eye is determined by the size of the of the________.
The size of this opening is controlled by the smooth muscle action of the pigmented _________.
The innermost tunic that contains photoreceptor cells is called the________
There are about 3 million_____which detect COLOR and about 1 billion____. which detect light and dark. The central region of the retina where images are focused for sharpest vision is the_______. The_______
nerve carries the visual stimulus as a nerve impulse to the_______lobes of the brain. Remember the nerves exit each eye and cross before entering the opposite side of the brain; this cross is the_______.
The anatomical "blind spot", called the__________is where this nerve interrupts the retinal layer and no photoreceptor cells are present.
Answers
The completed words in relation to the structure of the eyes are given as follows:
lensciliary bodypupilirisretinaconesrodsfoveaoptic nerveoccipital lobesoptic chiasmoptic discWhat is the completed text?It is given as follows;
Light will then need to pass through the aqueous humor before it passes through the lens, the major focusing structure. The lens is held in place by suspending ligaments attached to a muscle called the ciliary body.Contraction of the ciliary muscles changes the shape of the lens which helps to focus the image onto the retina. The amount of light entering the eye is determined by the size of the of the__pupil_.The size of this opening is controlled by the smooth muscle action of the pigmented iris.The innermost tunic that contains photoreceptor cells is called the retina.There are about 3 million___cones__which detect COLOR and about 1 billion__rods__. which detect light and dark. The central region of the retina where images are focused for sharpest vision is the____fovea___. The__optic_nerve carries the visual stimulus as a nerve impulse to the___occipital____lobes of the brain. Remember the nerves exit each eye and cross before entering the opposite side of the brain; this cross is the___chiasm____.The anatomical "blind spot", called the____optic disc______is where this nerve interrupts the retinal layer and no photoreceptor cells are present.Learn more about the eyes:
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what is the condition for the first dark fringe through a single slit of width w?
Answers
The condition for the first dark fringe through a single slit of width w is when the path difference between the rays passing through the top and bottom edges of the slit is half a wavelength, which causes destructive interference and results in a dark band on the screen.
This can be expressed mathematically as sin θ = λ/w, where θ is the angle between the direction of the incoming light and the direction of the diffracted light, λ is the wavelength of the light, and w is the width of the slit.
The condition for the first dark fringe in a single-slit diffraction pattern occurs when the path difference between adjacent rays is equal to half the wavelength (λ/2). This can be represented by the equation:
sin(θ) = λ/(2w)
where θ is the angle of the first dark fringe, λ is the wavelength of the light, and w is the width of the slit.
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Can someone please explain
1) Centripetal force with example
2) Centrifugal force with example
3) Circular motion with example
Answers
Explanation:
centripetal force is a force that makes a body follow a curved path. for example, twirling,a lasso, cream seperator etc.
A force that causes an objectmoving in a circular path to move out and away from the centres of it's path is centrifugal force. for example,drifting, banked roads, washing machine etc.
Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. for example, stirring batter, stone tied to a string etc
hope its helpfull♡
To convert 1.3 hours to minutes, you would multiply by 1 h / 60 min. Is this true or false?
Answers
When we convert units, we have to use a conversion factor, which is a fraction of the relation between the magnitudes involved. In this case, if we want to convert 1.3 hours to minutes, we have to multiply by 60min / 1h because in the opposite case, we won't obtain the correct transformation. The expression below shows it.
\(1.3hr\cdot\frac{1hr}{60\min}=0.02166\ldots\frac{hr^2}{\min }\)As you can observe, we are not able to convert the units following the given statement.
Therefore, the answer is false.TRUE OR FALSE!!!!!
PLEASE HELP
Igneous rock is formed by volcanoes releasing magma from the mantle, the rock cools and piles up forming a mountain. Rivers direct water to cool magma underground forming metamorphic rock under lake beds.
Answers
Answer:
true
Explanation:
this is true, igneous rocks are formed from molten lava when it cools
Answer: True
Explanation:
what are the types of measurement units used in colombia?
Answers
The types of measurement units used in Colombia is international System of Units (SI), which is the successor of the Decimal Metric System.
What is the international System of Units?The International System of Units, known by the international abbreviation SI in all languages and sometimes pleonastically as the SI system, is described as the modern form of the metric system and the world's most widely used system of measurement.
This means that since instead of inches, feet or miles, Colombia will be using centimeters, meters and kilometers.
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find the work done by a force of 4 n acting in the direction 2i + 2j + 2k in moving an object 9 m from (0,0,0) to (0,9,0).
Answers
Work
done by the force = 18√2 Joules.Work done by a force is the product of force and the distance moved in the direction of force. We are given force = 4 N and the direction of force as 2i + 2j + 2k.
The direction of force is a unit vector and represents a
direction
perpendicular to the face of a cube. Hence the force is acting in the direction of a diagonal of the cube.
Hence the force is at an angle of 45 degrees with each of the axis.Now let us find the displacement of the object in the direction of the force.
The displacement is given as the distance between the two points (0,0,0) and (0,9,0).
Use the distance formula to calculate the displacement between the two points:(0,0,0) and (0,9,0) = √((0-0)²+(9-0)²+(0-0)²) = √81 = 9 meters.
The distance moved in the direction of force = 9 meters * sin 45 degrees = 9/√2 meters. Work done by the force = force * distance moved in the direction of force= 4 N * 9/√2 meters= 18√2 Joules.
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a student pushed a 100 N bicycle over a distance of 15 m in 5 s. calculate the power generated.
Answers
The catch in this one is: We don't know how much force the student used to push the bike.
It wasn't necessarily the 100N. That's just the weight of the bike. But you know that you can push a car, a wagon, or a bicycle hard, you can push it not so hard, you can give it a little push, you can give it a big push, you can push it strong, you can push it weak, you can push it medium. The harder you push, the more it'll accelerate, but it's completely up to you how hard you want to push. That's what's so great about wheels ! That's why they were such a great invention ! This is where I made my biggest mistake. This guy came into my store one day and said he's got this great invention, it's definitely going to take off, it'll be a winner for sure, he called it a "wheel". I looked at it, I turned it over and I looked on all sides. I thought it was too simple. I didn't know then it was elegant. I threw him out. I was so dumb. I could have invested money in that guy, today I would have probably more than a hundred dollars.
Anyway, can we figure out how much force the student used to push with ? Stay tuned:
-- The bike covered 15 meters in 5 seconds. Its average speed during the whole push was (15m/5s) = 3 meters/sec.
-- If the bike started out with no speed, and its average speed was 3 m/s, then it must have been moving at 6 m/s at the end of the push.
-- If its speed increased from zero to 6 m/s in 5 seconds, then its acceleration was (6m/s / 5 sec) = 1.2 m/s²
-- The bike's weight is 100N.
(mass) x (gravity) = 100N
Bikemass = (100N) / (9.8 m/s²)
Bikemass = 10.2 kilograms
-- F = m A
Force = (mass) x (acceleration)
Force = (10.2 kg) x (1.2 m/s²)
Force = 12.24 N
-- Work = (force) x (distance)
Work = (12.24 N) x (15 m)
Work = 183.67 Joules
-- Power = (work done) / (time to do the work)
Power = (183.67 joules) / (5 seconds)
Power = 36.73 watts
would you consider caffeine to be more or less toxic then arsenic explain
Answers
What are at least two ways that you can get your catapult to increase the horizontal distance of an object launched from it?
Answers
Answer:Use Bungee Cord Power. Use the tension of bungee cords as opposed to springs to power your catapult.
Shoot From the Best Angle. Create an arm break that stops the arm at a 45-degree angle from the floor.
Explanation:
find the voltage drops on each resistor ( r1, r2, r3 ), currents (i1, i2, i3), total power dissipated on the circuit (pt), and match the values.
Answers
To determine the voltage drops on each resistor (R1, R2, R3), currents (I1, I2, I3), and the total power dissipated in the circuit (Pt), we would need the specific values of the resistors and the applied voltage or current source.
Voltage Drops (V1, V2, V3): Use Ohm's Law (V = IR) to calculate the voltage drops across each resistor. Multiply the current flowing through each resistor by its respective resistance.Currents (I1, I2, I3): If the circuit is in series, the current passing through each resistor is the same and can be calculated using Ohm's Law. If the circuit is in parallel, you need to use the appropriate formulas to determine the current flowing through each branch.Total Power Dissipated (Pt): Calculate the power dissipated on each resistor using the formula P = VI or P = I^2R, where V is the voltage drop and I is the current. Then, sum up the power dissipated on each resistor to obtain the total power dissipated in the circuit.By finding the voltage drops, currents, and power dissipated on each resistor, you can compare the values to check if they match. However, without specific values for the resistors and the circuit configuration, cannot provide the exact calculations.
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Following is the complete question: Find the Voltage drops on each resistor (R1, R2, R3). Currents (11, 12, 13), Total power dissipated on the Circuit (Pt), and match the values. R1 R2 w 30 120 VI BV Hulle R3 -60 V2 21.V Current (13) 1. 60 V VR1 2.-3V Total Power (PT) 3. 24 V Current (12) 4. 5 A < VR2 5.-1A > 6. 4A VR3 7. 399 W Current (1)
which phenomenon causes precipitation to reach earth?
Answers
"Precipitation occurs due to condensation of water molecules in the air into droplets and they fall to the ground due to gravity."
One of the stages of the water cycle is precipitation. Clouds are areas of the sky with enough water content for drops to condense, and they are where precipitation originates. Therefore, precipitation follows mist. Although clouds are the source of all precipitation, not all clouds generate precipitation.
When cloud droplets or crystals become too dense to continue floating in the atmosphere, precipitation starts to descend from the clouds. If droplets do not become sufficiently dense, precipitation will not occur, and if the cloud is sufficiently heated by the Sun, it may even disperse. But for there to be a place for precipitation to come from, clouds do need to develop.
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List at least four objects, one fo which is an aluminum rod. Predict what will happen if you bring each object near one pole of a magnet and then near the other pole of that magnet
Answers
Sure, here are at least four objects, one of which is an aluminum rod, and what might happen when they are brought near one pole of a magnet and then the other pole:
Aluminium rod , paper clip , copper coin , iron nail
1. Aluminum rod - When brought near one pole of a magnet, the aluminum rod will not be attracted to the magnet as aluminum is not magnetic. When brought near the other pole of the magnet, there will still be no attraction.
2. Iron nail - When brought near one pole of a magnet, the iron nail will be attracted to the magnet and stick to it. When brought near the other pole of the magnet, the iron nail will be repelled and pushed away.
3. Copper coin - When brought near one pole of a magnet, the copper coin will not be attracted to the magnet as copper is not magnetic. When brought near the other pole of the magnet, there will still be no attraction.
4. Paper clip - When brought near one pole of a magnet, the paper clip will be attracted to the magnet and stick to it. When brought near the other pole of the magnet, the paper clip will be repelled and pushed away.
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Nuclear energy is currently used in which three kinds of vehicles?
A. cars, submarines, spacecraft
B. submarines, ships, spacecraft
C. spacecraft, airplanes, cars
D. airplanes, submarines, ships
Answers
Answer:
d
Explanation:
A force of 20N is directed at an angle of 60° above the x-axis. A force of 20N is directed at an angle below the x-axis. What is the vector sum of the two forces?
NB:Use graph paper to find your answer.
Answers
check the pictures(2 pictures)check the pictures(2 pictures)check the pictures(2 pictures)
The vector sum of the two forces is 20 and the magnitude of the resultant is 20 towards positive x-axis.
What is a vector?A vector is a quantity or phenomena with magnitude and direction that are independent of one another. The phrase also refers to a quantity's mathematical or geometrical representation.
If no vector can be written as a linear combination of the others, a set of vectors is said to be linearly independent.
The vector representation for the forces F and F are:
\(\rm \vec F_1 = 20 COS 60^0 \vec i + 20 SIN 60^0 \vec j\\\\ F_1 =20 \times \frac{1}{2} \vec i+20 \times \frac{\sqrt{3} }{2} \vec j \\\\ \vec F_1 = 10 \vec i+ 10 \sqrt{3} \vec J\)
\(\rm F_2 = 20 cos 60^0 \vec i+20 sin(-60) \vec j \\\\ F_2 = 20 \times \frac{1}{2} \times \vec i+20 \times \frac{\sqrt{3} }{2} \vec j \\\\ \vec F_2 = 10 \vec I -10\sqrt{3} \vec J\)
The vector sum of the two forces are;
\(\rm \vec R = \vec F_1+\vec F_2\\\\ \vec R = 10 \vec i+ 10 \sqrt{3} \vec J+10 \vec i-10\sqrt{3} \vec J\\\\ \vec R =20 i\)
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what is the normal force acting on a mountain goat that weighs 650 n and is standing on such a slope?
Answers
The normal force acting on the mountain goat is 650 N. It supports the weight of the goat and keeps it in equilibrium on the slope.
The normal force is the force exerted by a surface to support the weight of an object resting on it. It acts perpendicular to the surface. In this case, the mountain goat is standing on a slope.
When an object is on an inclined surface, the normal force can be split into two components: one perpendicular to the slope (normal to the surface) and one parallel to the slope (tangential to the surface).
The component parallel to the slope is responsible for counteracting the gravitational force pulling the object down the slope.
In this scenario, the mountain goat is standing on the slope, and we can assume it is in equilibrium, meaning it is not sliding down the slope. Therefore, the parallel component of the normal force is equal in magnitude and opposite in direction to the gravitational force acting down the slope.
The weight of the mountain goat is given as 650 N. This is the magnitude of the gravitational force acting on the goat.
The normal force acting on the goat is equal in magnitude but opposite in direction to the gravitational force. So the normal force is also 650 N.
The normal force acting on the mountain goat is 650 N. It supports the weight of the goat and keeps it in equilibrium on the slope.
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What is the difference between rotation and revolution in relation to the Earth. How long does each take on Earth?
Answers
Answer:
rotation is a day and revolution is 365 days
4.
A person in a wheelchair exerts a force of 25 N to go up a ramp that is 10 m long
The weight of the person and wheelchair is 60 N and the height of the ramp
is 3 m.
Answers
Answer:
72%
Calculating Efficiency:
The amount of work obtained from a machine is always less than the amount of work put into it. Thisis because some of the work is lost due to friction. The efficiency of a machine can be calculated usingthe following formula:Percent Efficiency = (work output-Machine / work input-You) x 100%
The free-fall acceleration on the moon is 1.62 m/s2 . What is the length of a pendulum whose period on the moon matches the period of a 1.90-m-long pendulum on the earth
Answers
Answer:
P = 2 pi (L / g)^1/2
Let 1 represent earth and 2 the moon
P2^2 / P1 ^2 = L2 g1 / (L1 g2) dividing equations
L2 = (P2 / P1)^2 * g2 / g1 * L1
L2 = 1 * 1.62 / 9.80 * 1.9 = .314 m
what of the following choices is one of the main principles behind rotary evaporation?A.Rotation produces larger surface area in the solution, facilitating the evaporation of solvents B.It increases the solvent acidity as its concentration increases during the process C.It lowers the pressure and therefore the boiling point of solvents D.Heated water bath allows the solvent to evaporate since it is an endothermic process
Answers
The correct option is A, the main principles behind rotary evaporation is Rotation produces larger surface area in the solution, facilitating the evaporation of solvents.
Rotary evaporation is a technique used in chemistry to separate and purify liquid mixtures. It involves heating a mixture in a round-bottomed flask, then rotating the flask at a constant speed while reducing the pressure inside the system with a vacuum pump. This causes the liquid to evaporate, and the resulting vapors are condensed and collected in a separate flask. The rotary evaporation process is especially useful for removing solvents from a sample, as the reduced pressure lowers the boiling point of the solvent, making it easier to evaporate.
Rotary evaporators are commonly used in a variety of fields, including chemistry, biology, and pharmaceuticals. They are particularly useful for preparing samples for further analysis or processing, such as in the extraction of natural products or the synthesis of new compounds.
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What is the change in internal energy if 20j of heat is released?
Answers
The change in Internal energy will be 20J.
In chemistry and physics, the internal energy (U) is defined as the total energy of a closed system.
Internal energy is the sum of the system's potential energy and the system's kinetic energy.
The change in internal energy of a reaction (ΔU) is equal to the heat gained or lost (enthalpy change) in a reaction if the reaction were carried out at constant pressure.
The internal energy of an ideal gas is a good approximation of real-world systems.
In such a system, particles in an ideal gas appear as point objects that collide with each other in a perfectly elastic way.
For an ideal gas, the internal energy is proportional to the number of moles of gas and its temperature: U = cnT
u=dq+W
u=20J [w=0]
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A 3.00 kg crate is pulled along a frictionless surface with a force of 55.0 N at 25.00 to the
horizontal so that it accelerates directly to the right. What is the crate's acceleration?
Answers
How to determine the output power (in watts) of a voltage rail
Answers
Answer:
.
Explanation:
To determine the output power (in watts) of a voltage rail, you need to know both the voltage and the current flowing through the rail. The formula for power (in watts) is P = V x I, where P is power, V is voltage, and I is current. So, if you know the voltage and current of the voltage rail, you can multiply them together to get the output power. Keep in mind that power is measured in watts, voltage is measured in volts, and current is measured in amperes.
To determine the output power (in watts) of a voltage rail, you'll need to know the voltage across the rail (in volts) and the current flowing through it (in amperes). You can use the following formula:
Power (in watts) = Voltage (in volts) × Current (in amperes)
Step 1: Measure the voltage across the rail using a voltmeter.
Step 2: Measure the current flowing through the rail using an ammeter.
Step 3: Multiply the measured voltage and current values to calculate the output power in watts.
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Does the earth emit visible light or heat
Answers
Answer:
Heat
Explanation: