In a parallel circuit with a 4 ohm and a 2 ohm resistor and a 12 volt source, what is the potential difference across the 4 ohm resistor?
Answers
Answer:
12volts
Explanation:
The potential difference between 4ohm resistor is 12volts because equal voltage is dropped in both resistor.
The picture clearly shows that the 4Ω resistor is connected directly to both terminals of the battery. If you connect a voltmeter to the ends of the resistor, the voltmeter is connected directly to the battery terminals. So the potential difference across the 4Ω resistor IS the potential difference across the battery . . . 12 volts.
As long as the battery is fresh enough to supply all the current that both resistors want, the 4Ω resistor doesn't even know that the 2Ω resistor is there. (And the feeling is mutual.)
Related Questions
Which is the correct equation for calculating the kinetic energy of an object?
COM
1
1
KE = mgh
KE = mu?
KE = at
KE =
492
O
) Intro
✓ Done
DO
Answers
Answer:
KE = 1/2(m)(v^2)
Explanation:
Answer:
I hope this helps
Explanation:
An 8000 kg engine pulls a train of 5 wagons, each of 2000 kg, along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate: the force of wagon 1 on wagon 2?
Answers
Answer:
The net force of engine on total mass of train is 35000 N
The net acceleration is 1.944 m/s²
I
Question 1(Multiple Choice Worth 4 points) The star named Canopus has a declination of approximately –52°. Which of these statements is correct about Canopus? It is 52° above the celestial equator. It is 52° below the celestial equator. It is 52° to the left of the celestial equator. It is 52° to the right of the celestial equator.
Answers
Answer:
It is 52° below the celestial equator.
Explanation:
The declination is the angle in degrees measured north (+) or south (-) of the an imaginary line called the celestial equator.
The celestial equator is a projection of the earth's equator on the celestial sphere. imaginary
The star named Canopus has a declination of approximately –52°.
Since the angle is negative, this shows that it is south or below the celestial equator and at 52° south of the celestial equator.
Thus, the star named Caponus is 52° below the celestial equator.
Answer:
the answer is 'it is 52° below the celestial equator.' :))
Explanation:
its the correct answer on the quizz,,, good luck!! :3
You start driving north for 9 miles, turn right , and drive East for another 40 miles. At the end of driving, what is your staight line distance from your starting point?
Answers
Answer:
41 miles
Explanation:
Also, the straight line distance from your starting point is technically called your displacement.
Is thermal energy the most common type of energy lostnin electrical devices
Answers
Answer:
Yes
Explanation:
The most common energy that is lost in electronic devices is in the form of heat energy.
scientist who discover fermentation is?
Answers
......
Answer:
it's Louis pastuer
Explanation:
...
Which is best supported by the data in the chart?
A: Current W flows at a higher rate than Current Z.
B: Current Y flows at a lower rate than Current X.
C: Current X has a lower potential difference than Current Y.
D: Current Z has a greater potential difference than Current W.
Answers
Answer:
Option C: Current X has a lower potential difference than Current Y.
Explanation:
The chart above only shows the potential difference of difference current.
A careful observation of the chart shows that Current X has a lower potential difference than Current Y.
Answer:
Answer:
Option C: Current X has a lower potential difference than Current Y.
Explanation:
The chart above only shows the potential difference of difference current.
A careful observation of the chart shows that Current X has a lower potential difference than Current Y.
Explanation:
Calculate the current through a 500W,230V heater. Which fuse would you use for this appliance?
Answers
Answer:
2.17 A
Explanation:
P=VI
I=P/V -----> 500/230=2.17 A
david starts at rest and increase it's speed to 10 m/s in 10s. what is it's acceleration?
Answers
Answer:
a=1 m/s^2
Explanation:
[tex]a = \frac{v - u}{t} \\ = \frac{10 - 0}{10} \\ = 1m {s}^{ - 2} [/tex]
Hey!!
Solution,
Initial velocity(u)=0 m/s
Final velocity(v)=10m/s
Time(t)=10s
Acceleration=?
Now,
Acceleration=v-u/t
=10-0/10
= 10/10
=1 m/s^2
The acceleration is 1 m/s^2
Hope it helps
Good luck on your assignment
few girls can resist flattery
Answers
Answer:
yes
Explanation:
Because they have logic duh!!! ;D
that is true. most ppl in general cant resist flattery. some can resist tho, bc they are smart.
Please help!
1. If a soldier lifts a 2-kg counterweight 0.5 meters, what is the gravitational force of the counterweight? (Include the equation and appropriate units.)
2. If a soldier lifts a 2-kg counterweight 0.5 meters, how much work is done? (Include the equation and appropriate units.)
please please please please help!!!
Answers
Answer:
the gravitational force of the counterweight is 19.6 Nthe work done is 9.8 JExplanation:
Question 1:
Given;
a counterweight of mass, m = 2-kg
distance moved by this weight, d = 0.5 meters
the gravitational force of the counterweight is calculated as;
F = mg
where;
F is gravitational force
m is the mass
g is acceleration due to gravity
F = 2 x 9.8 = 19.6 N
Thus, the gravitational force of the counterweight is 19.6 N
Question 2:
Given;
a counterweight of mass, m = 2-kg
height moved by this weight, h = 0.5 meters
the work done is calculated as;
Work done = Force x distance moved by this weight
Work done = 19.6 x 0.5 = 9.8 J
Thus, the work done is 9.8 J
Conductivity in metallic solids is due to the presence of free
Answers
Answer:
due to the presence of fee electrons.
Explanation:
these electrons conduct electric current.
Conductivity in metallic solids is due to the presence of free electron. No of the electron will decide the flow of the electric current.
What is the charge?When the matter is put in an electromagnetic field, it has an electric charge, which causes it to experience a force. A positive or negative electric charge can exist.
Charges that are similar repel each other, whereas charges that are dissimilar attract each other. The term “neutral” refers to an item that has no net charge.
A valence electron is an electron in the outermost shell. Hence, associated with an atom that can experience the innovation of a chemical bond if the outer shell is not closed.
Conductivity in metallic solids is due to the presence of free electron.
Hence, electron is the correct answer for blank.
To learn more about the charge, refer to the link;
https://brainly.com/question/24391667
#SPJ2
rewrite this sentance so that it is correct: the energy stored in the sun is 6 million degrees C'
Answers
I was confused with the question so, the following are the two answers. You can take whichever u want to. :)
Explanation:
If the qn is Rearrange to make it right, then the answer is: The 6 million degrees energy is stored in the sun.
Or if the question is Correct the sentence, then the answer will be: The energy stored in the sun is solar energy.
An astronaut is on a new planet. She discovers that is she drops a space rock from 12m above the groundnut has a final velocity of 3m/s just before it strikes the planet surface. What is the acceleration due to gravity on the planet?
Answers
Answer:
-0.375 m/s2
Explanation:
To find the acceleration due to gravity in this planet, we can use the Torricelli formula of UALM (uniformly accelerated linear motion):
V^2 = Vo^2 + 2*a*S
Where V is the final velocity, Vo is the inicial velocity, a is the acceleration and S is the total displacement.
With V = 3, Vo = 0 and S = -12, we have:
3^2 = 0^2 - 2*a*12
24a = -9
a = -9/24 = -0.375 m/s2
The greatest number of thunderstorms occur in the?
mountains
tropics
high latitudes
middle latitudes
Answers
Answer:
On the other hand, Florida's Gulf Coast experiences the greatest number of thunderstorms out of any U.S. location. These types of storms occur on average 130 days per year in Florida.
A sled is moving down a steep hill. The mass of the sled is 50 kg and the net force acting on it is 20 N. What must be done to find the acceleration of the sled? Check all that apply.
-The force of gravity must be broken into its parallel and perpendicular components.
-Acceleration can be found by dividing the net force by mass.
-Acceleration can be found by multiplying the net force by mass.
-The magnitude of the force components must be multiplied by gravity.
-Trigonometry can be used to solve for the magnitude of the force components.
-Net force must be found before acceleration can be found.
Answers
Answer:
-The force of gravity must be broken into its parallel and perpendicular components.
-Acceleration can be found by dividing the net force by mass.
-Trigonometry can be used to solve for the magnitude of the force components.
-Net force must be found before acceleration can be found.
Answer:
A, B, E, F
Hope this helps!!! :)
Q2. Fill in the blanks:
North Pole of a magnet will.....
.. North pole of another magnet.
South Pole of a magnet will.
North pole of a another magnet.
Needle of a compass lines up with the......
of a magnet.
You can find the shape of a magnetic field using........
...... and also a plotting.
Answers
Answer:
repel , attract,l am sure with these two blanks only
Answer:
Magnetic fields
A magnet creates a magnetic field around it. You cannot see a magnetic field, but you can observe its effects. A force is exerted on a magnetic material brought into a magnetic field. The force is a non-contact force because the magnet and the material do not have to touch each other.
A car drives 16 miles south and then 12 miles west. What is the magnitude of the car’s displacement?
Answers
Answer:20 miles
Explanation:
Describe the mechanical energy and the thermal energy of a bouncing basketball
Answers
Answer:
when the ball is bounced gravitationally energy is released (more info below)
Explanation:
When a force is applied down to the ball, the gravitational potential energy is converted into kinetic energy before it hits the earth. Cinetic energy is converted into vibration, thermal, and static electrical energy, before the momentum of the ball pushes the ball back up into the hands of the people.
hope this helped!
The description of the mechanical energy and the thermal energy at the time when the ball should be bounded at the time when there is the realization of the gravitational energy.
Force applied down to the ball:
At the time when the force is applied down to the ball so here the gravitational potential energy should be transformed into kinetic energy prior at the time when it should be hit to the earth. Kinetic energy should be transformed into vibration, thermal, and static electrical energy prior to the momentum of the ball that pushed the ball back up the hands of the people.
Learn more about energy here: https://brainly.com/question/24432180
1. A body whose mass is 2 kg and has a volume of 500cm just floats
when completely immersed in a liquid. Calculate the density of the
liquid
Answers
Answer:
Density equals mass over volume so 2 divided 500
A robot starts from a certain point and moves east for a distance of 5.0 meters, then goes north for 3.0 meters, and then turns west for 2.0 meters. a. What are the x-y coordinates for the resultant vector? b. What is the magnitude of the resultant vector for the robot?
Answers
Explanation:
It is given that, a robot starts from a certain point and moves east for a distance of 5.0 meters, then goes north for 3.0 meters, and then turns west for 2.0 meters.
Let east is +x, west is -x north is +y.
When it moves east for a distance of 5.0 meters, it means (5,0)
When it goes north for 3.0 meters, and then turns west for 2.0 meters, it means (0,3) +(-2,0)
(a) x-y coordinates for the resultant vector is (3,3)
(b) The magnitude of the resultant vector for the robot is given by :
[tex]R=\sqrt{3^2+3^2} \\\\R=4.24\ m[/tex]
What is a closed system?
A. A system in which no work is done
B. A system that can exchange matter with its surroundings
C. A system that cannot exchange matter with its surroundings
D. A system in which no heat flows
Answers
Answer:
C
Explanation:
A closed system does not allow transfer of matter in or out of the system
Which statement correctly compares sound and light waves?
A.Both light and sound waves need matter to carry energy from one place to another.
B.Neither light nor sound waves need matter to carry energy from one place to another.
C.Light waves carry energy parallel to the motion of the wave, while sound waves carry energy perpendicular to it.
D.Sound waves carry energy parallel to the motion of the wave, while light waves carry energy perpendicular to it.
Answers
Answer:
The correct answer is D.Sound waves carry energy parallel to the motion of the wave, while light waves carry energy perpendicular to it.
Explanation:
Just got the answer correct.
State the number of electrons and protons found in an neutral atom
Answers
Answer:
The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).
Explanation:
happy to help ya:)
5. Ultraviolet rays are potentially harmful to us primarily due to their
A. intensity
B. high frequency.
C. long wavelength.
D. amplitude.
Answers
Answer:
A
Explanation:
Ultraviolet light occurs after white light;
Do you know why gamma rays are harmful because of their high frequency and short wavelength leading to high intensity.
Though the frequency is higher than that of white light, its because of its intensity.
Ultraviolet rays comes handy from depletion of the earth's ozone layer
Hence harmful Ultraviolet rays from the sun attacks the skin Leading to Sun burn and other things.
Answer:
High frequency is the answer
Explanation:
Took pf test is was 100% correct
Two basketball teams are resting during halftime. While they are resting, a truck driver asks them for help pushing his broken down truck to the top of a nearby hill so he can coast to the mechanic's shop. One team agrees to help, but the other refuses to help. The team that goes to push the truck is unable to get the truck to the top of the hill by themselves.
Answers
Answer:
It is a superordinate goal because both teams could have helped with the task.
Explanation:
If both teams pushed then they could have made it happened
A EXAMPLE OF WHEN BOTH PHYSICAL CHANGE AND CHEMICAL CHANGE OCCUR 3 EXAMPLES
Answers
Answer:
I know 1, that is in the case of a burning of a candle.
Explanation:
A football player kicks a ball horizontally off a hill with an initial velocity of 42.0 m/s. It travels a horizontal distance of 59.2m. How y'all was the hill he kicked the ball off of?
Answers
Explanation:
.........................
Which of the following devices would you expect to consume the most energy for each hour that it operates?
Answers
The property of matter that resists changes in motion is called
inertia.
friction.
weight.
gravity.
Answers
Answer:
friction
Explanation:
The property of matter that resists changes in motion is called friction. Details about friction can be found below.
What is friction?Friction is a force that resists the relative motion of two bodies in contact.
Friction is a resisting force that is experienced when two bodies are moving over one another, hence, is said to resist changes in motion. Examples of cases of friction are as follows:
Vehicle moving over a tarred roadSliding of both hands over one anotherTherefore, the property of matter that resists changes in motion is called friction.
Learn more about friction at: https://brainly.com/question/13000653