1. Find the power dissipated in each resistor in the following circuits and compare the sum of the power of the resistors in a circuit to the power out of the battery. (13) 12.0v_ 12.0V 30.0 0 40.0 �
Answers
The sum of the power dissipated in the resistors (0.51 W) is less than the power output of the battery (1.752 W) since some power is lost in the circuit due to internal resistance or other factors. Current flowing through the circuit is 0.146 A.
To find the power dissipated in each resistor in the given circuit and compare it to the power output of the battery, we need to apply Ohm's Law and the power formula.
In the circuit, we have three resistors: R1 = 12.0 Ω, R2 = 30.0 Ω, and R3 = 40.0 Ω. The voltage across the circuit is 12.0 V.
First, we can calculate the current flowing through the circuit using Ohm's Law:
I = V / R_total,
where V is the voltage and R_total is the total resistance.
The total resistance can be calculated as:
R_total = R1 + R2 + R3 = 12.0 Ω + 30.0 Ω + 40.0 Ω = 82.0 Ω.
Plugging in the values, we find:
I = 12.0 V / 82.0 Ω ≈ 0.146 A.
Now, we can calculate the power dissipated in each resistor using the power formula:
P = I^2 * R.
For R1:
P1 = (0.146 A)^2 * 12.0 Ω ≈ 0.255 W.
For R2:
P2 = (0.146 A)^2 * 30.0 Ω ≈ 0.109 W.
For R3:
P3 = (0.146 A)^2 * 40.0 Ω ≈ 0.146 W.
The total power dissipated in the resistors is the sum of the individual powers:
P_total = P1 + P2 + P3 ≈ 0.255 W + 0.109 W + 0.146 W ≈ 0.51 W.
To compare this with the power output of the battery, we multiply the battery voltage by the current:
P_battery = V * I = 12.0 V * 0.146 A ≈ 1.752 W.
Therefore, the sum of the power dissipated in the resistors (0.51 W) is less than the power output of the battery (1.752 W) since some power is lost in the circuit due to internal resistance or other factors.
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Related Questions
is hydrogen good conductor or poor conductor
Answers
Answer:
Good one
Explanation:
Hydrogen has the highest thermal conductivity of any gas.
how can I make a square fit in a triangle hole
Answers
cut the square and make it a triangle
10. If an electrical appliance becomes live, the appliance
A) stops working and is safe to touch
B) continues working and is safe to touch
(C) continues working and is dangerous to touch
D) Is safe to touch because of the fuse.
Answers
Answer:
C
Explanation:
If an electrical appliance becomes alive, the appliance continues working and is dangerous to touch
Which of these jobs is MOST likely to be open to someone with an associate’s degree (in other words, a two-year college degree)?
A.
computer support specialist
B.
database administrator
C.
operations research analyst
D.
business information manager
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how many band is the parametric microphone equalizer?
Answers
Answer:
3 bands
Explanation:
Basically, the Parametric EQ divides the audio spectrum into three bands, allowing you to enhance (or suppress) the level in that range.
Examine the weather map.
A weather map of the United notes. The following are shown on the map: major cities with high and low temperatures; high and low pressure systems; types of precipitation, fronts. The arrow is pointing to an H in a circle.
What does the symbol indicated by the arrows most likely represent?
a hurricane
low pressure
high pressure
high temperatures
Answers
Answer:
High pressure.
Explanation:
The symbol H indicates high pressure, while the symbol L indicates low pressure. Therefore, option C is correct.
What is a weather map?A weather map is a map of the world or a portion of it that uses symbols to depict the weather conditions at a given time, including temperature, pressure, wind speed and direction, humidity, clouds, visibility, and type and amount of precipitation.
Different kinds of weather maps are used by meteorologists to display forecasts. Satellite, Doppler radar, precipitation, temperature, and wind speed are the primary weather maps. Let's investigate each of these in greater depth. There are four types of weather maps and that is station model map, aviation map, temperature map, and streamline map.
The symbol H indicates high pressure. Therefore, option C is correct.
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dhe ti sera
SM TOM
ORAL, cu
fut-ve, ne E
3:13
dingin Sub
5 ton as watinga
testant of town
Answers
Answer:
what does it mean
Explanation:
How can I help with your question?
Since all stars begin their lives with the same basic composition what characteristics most determines how they will differ
Answers
Answer:
Mass they are formed with
Explanation:
All stars are born with the same composition such as one quarter of helium, three quarter of hydrogen, and heavier element does not found more than two except their mass. Mass that differ all stars from other stars they born with. How much the mass of a star is large , the star would be as messy.
For example our sun is a star and have large mass four times greater than other living stars. It is found that smallest mass is around 1/12th of sun mass. The masses of a star is determined by its orbit binary. Sun is called a brown dwarf.
The actual mass of a sheet of copy paper is 4.5 g. What must be the actual mass of a 1 cm² plece of copy paper?
Show your calculations.
Answers
The mass of 1 cm² piece of copy paper is 0.0072 g.
What is the area of a piece of paper?Assuming the dimensions of a piece of paper is 21.0 x 29.7 cm
The area of the piece of paper = 21.0 * 29.7 = 623.7 cm²
Mass of 623.7 cm² = 4.5 g
Mass of 1 cm² piece of copy paper = 4.5/623.7 cm² = 0.0072 g
Therefore, the mass of 1 cm² piece of copy paper is 0.0072 g.
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what term describes a wave changing direction when it enters a new medium?
Answers
refraction, in physics, the change in direction of a wave passing from one medium to another caused by its change in speed. For example, waves travel faster in deep water than in shallow.
The resistance of a component can be found by measuring the potential difference across it and the __________ that travelled through it. What word completes the sentence?
asap please
Answers
The resistance of a component can be found by measuring the potential difference across it and the current that traveled through it.
What is resistance?In physics, the word resistance makes reference to the force against the movement of a current in an electrical circuit.
This value (resistance value) is measured in Ohms and it is directly related to energy current.In conclusion, the resistance of a component can be found by measuring the potential difference across it and the current that traveled through it.
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a body of groundwater that is porous, permeable and has the water table as its upper surface is a
Answers
A body of groundwater that is porous, permeable, and has the water table as its upper surface is called an aquifer.
An aquifer is a body of groundwater that is porous, permeable and has the water table as its upper surface. It is an underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, silt, or clay) from which groundwater can be extracted using a well or by pumping.The term “aquifer” comes from two Latin words: aqua, which means “water,” and ferre, which means “to carry.” There are two types of aquifers: confined and unconfined. Confined aquifers are those that are separated from the land surface by an overlying layer of low-permeability material, while unconfined aquifers are not.Aquifers are a vital resource for human activities, particularly in areas where surface water is scarce. Groundwater from aquifers is commonly used for drinking, irrigation, and industry. It is essential to manage and conserve aquifers to ensure their continued availability and sustainability.
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fill in the blanks
11) Stored energy is called ________ energy.
12) When you move your hand or foot, your body has converted potential energy into ________ energy.
13) When coasting while roller skating, you eventually stop due to ________.
14) A ball has 100 J of potential energy when it is on a shelf. The kinetic energy of the ball the instant it hits the floor is ________J.
Answers
A concave mirror has a focal length of 18 cm. This mirror forms an image located 54 cm in front of the mirror. What is the magnification of the mirror? (Include the sign.)
Answers
magnification m = -v/u = -2
Concave mirrors can generate both real and virtual images. A virtual, magnified image of the object is produced when the concave mirror is positioned very near to it.
As the distance between the object and the mirror increases, the size of the image decreases and real images are produced. When an object's distance is less than the focal length in a concave mirror, the magnification will be higher than one. When the object's distance exceeds the focal length, the magnification is less than one.
Given focal length f = 18 cm
image distance v = 54 cm
then from lens equation
(1/f) = (1/u)+(1/v)
(1/18) = (1/u)+(1/54)
-(1/u) = (1/54)-(1/18)
object distance u = (18*54)/(18-54) = 27 cm
magnification m = -v/u = (-54)/(27) = -2
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Similarities between extrusive igneous rocks and intrusive igneous rocks
Answers
Answer:
Well this would be science... not physics...
Explanation:
1) both are a product of cooling lava/magma
2) Both stones can be caused during volcanic eruptions or clastic flow
3) Both are igneous in family (duh)
4) Intrusive rocks are formed underground from seeping into crevasses and are slow cooling and extrusive rocks are fast or instant cooling and cool above the surface (if differences are needed)
A concave mirror of radius of curvature 40 cm is to be used to obtain a real image of an object. The image is to be one- third as large as the object. Where should the object be placed, and where is the image to be found?
Answers
Answer:
u = 80 cm and v = 80/3 cm
Explanation:
focal length f = +40/2 = 20 cm.
magnification m = v/u = 1/3, thus v = u/3
using 1/u+1/v=1/f gives 1/u=1/(u/3)=20
So u = 80 cm and v = 80/3 cm
A drag racer accelerated from 0m/s to 200m/s in 5 seconds
Answers
The acceleration of the drag racer when he attains the speed of 200 m/s from 0 m/s in just five seconds is 40 m/s^2.
Acceleration refers to the rate at which the moving object acquires a certain velocity in a specific period of time. It is denoted by 'a'. It is also equal to ratio of change in velocity to the difference of time taken.
In the given scenario, the drag racer attains a speed of 200 m/s from 0 m/s. This means the change in velocity is given as follows:
Change in velocity = 200 - 0 = 200 m/s
Since the time taken by the drag racer to attains this speed is 5 seconds, therefore acceleration = change in velocity/ time
Acceleration = 200/5 = 40 m/s^2
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Refer to complete question below:
A drag racer accelerated from 0 m/s to 200 m/s in 5seconds . What was the acceleration of the drag racer?
Elena puts her eggs in a cage made out of wood. The wood breaks during
the landing, but the eggs survive. Which would be the best reason to
explain why this prevented her eggs from breaking?"
O Directs the energy of the impact towards the egg
O Decreases the velocity of the egg before it starts slowing down
O Increases the time that the egg slows down
O Decreases the time that the egg slows down.
O Directs the energy of the impact away from the egg
O Increases the velocity of the egg before it starts slowing down
Answers
Answer:
I think the answer is Decreases the time that the egg slows down.
Explanation:
If not try it starts slowing down
O Increases the time that the egg slows down.
A body with mass 2 kg falls freely from rest, from a height of 4 m. If acceleration due to gravity is 9.8 m/s2, determine the work done by the force of gravity.
Answers
We will determine the work as follows:
\(W=m\cdot g\cdot h\)So:
\(W=(2Kg)(9.8m/s^2)(4m)\Rightarrow W=78.4Kg\cdot m^2/s^2\)\(\Rightarrow W=78.4J\)So, the work done by the force of gravity is of 78.4 J.
Energy from the sun drives the _ of the water from the ocean surface. As the air moves up the west side of the mountain, the water vapor cools and undergoes _ . The force of gravity causes the _ of the water from the cloud. Choices for the _ are condensation, evaporation, precipitation
Answers
Answer: The air is full of water, as water vapor, even if you can't see it. Condensation is the process of water vapor turning back into liquid water, with the best example being those big, fluffy clouds floating over your head. And when the water droplets in clouds combine, they become heavy enough to form raindrops to rain down onto your head.
Explanation:
In this experiment, you need to examine the idea of
thermal energy transfer. Using a controlled experiment,
what might a good question about the variables that
affect thermal energy transfer be? Thermal energy
transfer depends on many properties, but limit your
question to only two.
I
Answers
By examining the influence of surface area and material composition on thermal energy transfer in a controlled experiment, we can gain valuable insights into the fundamental factors that affect heat exchange. This knowledge can have practical applications in fields such as engineering, materials science, and energy efficiency.
A good question about the variables that affect thermal energy transfer in a controlled experiment could be: How does the surface area and material composition of an object influence the rate of thermal energy transfer?
By focusing on the surface area and material composition, we can investigate how these two variables affect the transfer of thermal energy. The surface area of an object determines the amount of area available for heat exchange, potentially affecting the rate of energy transfer. The material composition, on the other hand, can impact factors such as thermal conductivity, specific heat capacity, and emissivity, all of which play a role in how effectively heat is transferred.
To conduct the experiment, you can select objects of different materials and surface areas, such as metal plates or plastic blocks with varying dimensions. By exposing them to a controlled heat source and measuring the temperature change over time, you can analyze how the chosen variables affect thermal energy transfer.
This investigation would provide insights into the fundamental factors that influence heat exchange and can be used to inform practical applications in various fields such as engineering, materials science, and energy efficiency.
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is there any book for physics.
Answers
Answer:
which class or course
Explanation:
please tell
How do you think organisms capture and store energy? How do you think organisms use and release this energy?
Answers
Speed and velocity use the same formula for calculations. However, an object can have a different average speed and average velocity because of
displacement
True
False
Answers
Answer:
true..........................
Speed and velocity use the same formula for calculations. However, an object can have a different average speed and average velocity because of displacement. This is true statement.
What are velocity and speed?As a vector quantity with both magnitude and direction, velocity has both. This term refers to the speed at which an object is moving or shifting positions.
Since speed is a scalar quantity, it lacks direction. It indicates the rate of a moving thing. When a particle's speed is high, it indicates that it is travelling quickly, and when it is low, it indicates that it is going slowly.
The displacement of a body during a period of time divided by the passage of time yields the average velocity of the body during that period.
The distance travelled by a body in a given amount of time, divided by the amount of time, is the body's average speed.
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Calculate the % crystallinity of branched polyethylene with a density of 0.925 g/cm3
Answers
To calculate the percent crystallinity of branched polyethylene, you need to know its density. However, the density alone is not sufficient to determine the crystallinity.
Crystallinity is usually determined using techniques such as X-ray diffraction or differential scanning calorimetry. These techniques analyze the polymer's structure and thermal behavior to determine the percentage of crystalline regions.
If you have additional information, such as the degree of branching or molecular weight, please provide it so that I can assist you further. Crystallinity is usually determined using techniques such as X-ray diffraction or differential scanning calorimetry (DSC).
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PLEASE HELP, NO ONE IS HELPING MEEEE :(
While taking the stairs it takes you 10 seconds to reach the top. The next time you take the same stairs, it takes you 5 seconds to reach the top stair. During which of these trips up the stairs did you use more power to climb?
Answers
Answer:
probably the trip where it took u 5 seconds
Does the claims made by Alfred Wegner (of continental drift) make sense? Explain
Answers
Wegener's theory of continental drift was an important early step in our understanding of how the continents move, but it lacked a complete explanation for the forces driving their movement.
Alfred Wegener's theory of continental drift proposed that the continents were once joined together as a single landmass, which he called Pangaea, and that they gradually moved apart over time. He suggested that the continents moved due to the forces of tides, centrifugal forces, and other factors. Although Wegener's theory was met with skepticism when it was first proposed in the early 20th century, it is now widely accepted as a valid explanation for the movement of continents.
Wegener based his theory on several lines of evidence, including the fit of the continents, the distribution of rocks and fossils, and the presence of glacial deposits in areas that are now too warm for glaciers. However, his explanation for the forces driving the movement of the continents was incomplete and lacked a plausible mechanism. It was not until the discovery of plate tectonics in the mid-20th century that a more complete explanation for continental drift was provided.
Plate tectonics explains the movement of the continents by the movement of the plates that make up the Earth's crust. The plates are driven by convection currents in the mantle, which move material up from the hot interior of the Earth, causing the plates to move apart, slide past each other, or collide. As the plates move, they carry the continents with them, causing them to drift apart or come together.
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Indeed, Alfred Wegener's assertions make logical. His hypothesis of continental drift, which is backed by a variety of geological and paleontological data, postulated that the continents were originally united together in a single landmass before drifting apart.
According to Alfred Wegener's hypothesis of continental drift, Pangaea, all the continents previously belonged to a single supercontinent. He thought the continents drifted to their present locations over millions of years after the supercontinent started to disintegrate some 200 million years ago. The matching of geological characteristics and fossils across continents, the resemblance of rock formations and mountain ranges, and the discovery of magnetic stripes on the ocean floor have all been used to support this idea, which was previously viewed with suspicion. In light of this, Wegener's assertions that the continents were originally linked and then drifted apart make sense, and his hypothesis has completely changed how we think about the Earth's past and current dynamics.
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Use dimensional analysis to calculate how many dozen donuts you would need to order to
feed a school of 456 students.
Answers
There are 38 dozens donuts needed to order to feed a school of 456 students.
How many dozen donuts you would need to order to feed a school of 456 students?There are 38 dozens of donuts you would need to order to feed a school of 456 students if each student eat one donut. We know that there are 12 units in one dozen so if we do the calculation of 456 divided by 12, we get 38. If each student receives one donut, 38 dozens of donut are required while on the other hand, if each student receives two donuts, then 76 dozens of donut are needed. If each student receives three donuts, then 114 dozens of donut are needed. If each student receives four donuts, 152 dozens of donut are needed.
So we can conclude that there are 38 dozens donuts needed to order to feed a school of 456 students.
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If you are traveling at 80 km/h for 1.5 hours, how far will you travel?
Answers
Answer:
120
Explanation:
1h=80
0.5h=40
1h+0.5h=80+40
=120
What do the lysosomes do? (check all that apply)
A) clean the cell
B) ship products
C) destroy foreign objects
D) provides energy for the cell
Answers
Answer:
I think its A
Explanation:
A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria.
The function of lysosomes is to remove waste as well as destroying a cell after it has died, called autolysis. A lysosome is an organelle containing digestive enzymes which it uses to function as the digestion and waste removal for cells, food particles, bacteria, etc.