in the context of the loop and junctions rules for electrical circuits a junction is: a) where a wire is connected to a resistor b) where a wire is connected to a battery c) where only two wire are joined

5,041 results
  1. science

    Which circuit will have the greatest electric current? (1 point) circuit 1 circuit 4 circuit 2 circuit 3 Circuit A has a resistance of 7.5 ohms, and circuit B has a resistance of 5 ohms. Which statement about the circuits must be correct?(1 point) If the

  2. Solar Energy Please Help

    The figure below presents the EQE of a triple junction solar cell with junctions A, B and C under short circuited (V = 0 V) condition. a) What is the bandgap (in eV) of the absorber layer of the junction A? b) What is the bandgap (in eV) of the absorber

  3. electric circuit

    Some types of fuses used to protect electric meters have resistances of several ohms. Is this objectionable (a) in ammeter circuits and (b) in voltmeter circuits? Why?

  4. solar science physics

    On the left-hand side of the figure below a III-V triple junction solar cell is shown. On the right-hand side, the J-V curves of the individual component cells and the multi-junction solar cell are shown. Which junction corresponds to sub cell 3?

  5. Physics

    A small block of mass m = 1.3 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 54.0 m above the bottom of the loop of radius R = 19.0 m. What is the kinetic energy of the mass at the point A

  6. physics

    The emf of a battery is equal to its terminal potential difference: A) under all conditions B) only when the battery is being charged C) only when a large current is in the battery D) only when there is no curent in the battery E) under no conditions my

  7. physics EM

    Shrinking Loop. A circular loop of flexible iron wire has an initial circumference of 167 cm, but its circumference is decreasing at a constant rate of 10.0 cm/s due to a tangential pull on the wire. The loop is in a constant uniform magnetic field of

  8. PHYSICSI

    The rotating loop in an AC generator is a square 11.0 cm on a side. It is rotated at 60.0 Hz in a uniform field of 0.800 T. Calculate the following quantities as functions of time t, where t is in seconds. (a) the flux through the loop mT·m2 (b) the emf

  9. physics

    A bead slides without friction around a loop-the-loop. The bead is released from a height h = 3.5R. A is at the highest point of the loop and R is the radius of the loop (a) What is its speed at point A? (b) How large is the normal force on it if its mass

  10. Physics

    A pilot, whose mass is 91.0 kg, makes a loop-the-loop in a fast jet. Assume that the jet maintains a constant speed of 125 m/s and that the radius of the loop-the-loop is 0.478 km. What is the apparent weight that the pilot feels (i.e., the force with

  11. physics (thanks)

    in the context of the loop and junctions rules for electrical circuits a junction is: a) where a wire is connected to a resistor b) where a wire is connected to a battery c) where only two wire are joined d) where three or more wire are joined e) where a

  12. English

    Put the parts of the heading in the correct order. Apache Junction, AZ 85219January 17, 20094717 East Junction Drive 4717 East Junction DriveJanuary 17, 2009Apache Junction, AZ 85219 January 17, 2009Apache Junction, AZ 852194717 East Junction Drive asap

  13. physics

    A mass m = 76.0 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 19.7 m and finally a flat straight section at the same height as the center of the loop (19.7 m off the ground). Since the mass would not make it

  14. Physics

    A toy car moves around a loop-the-loop track. The loop is 0.5 m high.What is the minimum speed of the car at the top of the loop for it to stay on the track?

  15. physics

    A mass m = 88 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 15.5 m and finally a flat straight section at the same height as the center of the loop (15.5 m off the ground). Since the mass would not make it

  16. TRIPLE JUNCTION SOLAR CELL - I

    The figure below presents the EQE of a triple junction solar cell with junctions A, B and C under short circuited (V = 0 V) condition. EQE table is: A: EQE = 0.7 wavelength= 300 to 650 nm B: EQE = 0.9 Wavelength= 650 to 850 nm C: EQE = 0.8 Wavelength= 850

  17. Science

    Megan wants to determine if an electrical circuit has electricity flowing through it. Which of the following evidence is proof that the circuit has an electrical current? a)The circuit is a closed loop. b)A light bulb is lit in the circuit. c)The circuit's

  18. Physics

    I THINK SOMEONE HAS THIS SAME QUETION! A massless spring of constant k = 91.0 N/m is fixed on the left side of a level track. A block of mass m = 0.50 kg is pressed against the spring and compresses it a distance of d. The block (initially at rest) is then

  19. Physics- Elena please help!

    A massless spring of constant k =84.8 N/m is fixed on the left side of a level track. A block of mass m = 0.5 kg is pressed against the spring and compresses it a distance d, as in the figure below. The block (initially at rest) is then released and

  20. JAVA PROGRAMMING

    "POWERS" Compute the power of a number given the base and exponent. Do three versions of this program using a while loop, a do-while loop and a for-loop. Introduction Please help..i don't know how to input this in java...please help.tnx

  21. Physics- Circuits Current & Voltage Problem

    Please find this question onto y a h o o s e a r c h e n g i n e b y c o p y & p a s t e. Determine... (a) the current in each resistor (Indicate the direction of the current flow through each resistor through the sign of your answer. Take upward current

  22. Physic please help!

    A piece of copper wire is formed into a single circular loop of radius 13 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0 to 0.70 T in a time of 0.45 s. The wire has a resistance per unit length of 3.3 10-2 /m.

  23. physics

    Design some simple digital circuits based on Boolean expressions. Draw circuits that implement the following Boolean expressions using some combination of AND, OR, NOT, NAND, and NOR gates. - NOT X OR NOT Y OR Z - X OR Y OR NOT Z - NOT X AND Y OR NOT Y AND

  24. PHYSICS

    A circular loop of flexible iron wire has an initial circumference of 168cm , but its circumference is decreasing at a constant rate of 15.0cm/s due to a tangential pull on the wire. The loop is in a constant uniform magnetic field of magnitude 1.00T ,

  25. physics

    The figure below shows three circuits, each consisting of a switch and two capacitors, initially charged as indicated. Let qL represent the charge on the left-hand capacitor in each circuit. The switches in all circuits are then closed.

  26. physics

    A long, vertical, straight wire carries a current I going upwards. The wire is perpendicular to the plane of a circular metal loop and passes through the center of the loop. The loop is allowed to fall and maintains its orientation with respect to the

  27. electricity

    What bias conditions must be present for the normal operation of a transistor amplifier? A)the emitter base junction must be reverse biased, and the collector base junction must be forward biased. B)the emitter base junction must be forward biased, and the

  28. Math!!

    Christmas lights that stay on when one bulb burns out are wired as parallel circuits. Resistors can be used with parallel electrical circuits to restrict the current flow and produce heat. If the first resistor (R1) = 20 Ohms, the second resistor (R2) = 30

  29. Ap physics b

    A piece of copper wire is formed into a single circular loop of radius 11 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0 to 0.65 T in a time of 0.45 s. The wire has a resistance per unit length of 3.3 10-2 /m.

  30. Physics

    Explain, with a diagram, how 2 plane mirrors could be fixed at a dangerous T-junction so that motorists approaching the junction could see all other traffic?

  31. Physics

    A massless spring of constant k = 91.0 N/m is fixed on the left side of a level track. A block of mass m = 0.50 kg is pressed against the spring and compresses it a distance of d. The block (initially at rest) is then released and travels toward a circular

  32. Physics

    A bead slides without friction around a loop- the-loop. The bead is released from a height of 12.9 m from the bottom of the loop-the- loop which has a radius 4 m. The acceleration of gravity is 9.8 m/s2 . A 4m 12.9 m What is its speed at point A ? Answer

  33. physics

    A small block of mass 42 kg slides along a frictionless loop-the-loop track. The radius of the loop is 5 meters. At what height above the bottom of the track should the block be released from so that it just makes it through the loop-the-loop without

  34. physics

    A square loop of wire of side 2.8 cm carries 3.0 A of current. A uniform magnetic field of magnitude 0.67 T makes an angle of 43° with the plane of the loop. (a) What is the magnitude of the torque on the loop? (b) What is the net magnetic force on the

  35. Physics

    Exercise 1: a) What is the apparent weight for a roller coaster rider at the bottom of a loop vs at the top of a loop? b) What is the min speed the car must pass along the loop so that the rider does not fall out while upside down at the top of the loop?

  36. physics

    A rectangular loop of side 8cm and 2cm with a smal cut is movg out of uniform magnetic field of magnitude O.3t directed normal to d loop .wat is d emf developed acros d cut if d velocity of d loop is 1cm in a directed normal to d 1) longer side,2)short

  37. science

    how does an electric ciircuit work? Books have been written about electrical circuits, what kinds, specilized circuits, etc. You need to be a little more specific with your question.

  38. phy

    when the junctions of two dissimilar metals are maintained at different temperatures an electromotive force is set up in the circuit of which these junctions are part. a pair of junctions of this kind and the effect are known respectively as

  39. maths

    The number of vehicles entering each of 15 junctions from a motorway during a 20-minute period on a Sunday morning is given below. 7 26 30 26 19 22 12 30 8 28 8 15 26 32 4 1 Choose the option that gives the median number of vehicles entering a junction.

  40. thermodynamics and static machenics

    For thermocouple,the value of C1 and C2 are 40.0×10^-6 v°/c and -0.01×10^-6 v°/c^2 respectively.If the thermo emf between the junction is 2.3×10^-2 v and the cold junction is kept at the ice point,calculate the temperature of the hot junction.

  41. College Physics

    A student of mass M = 82 kg takes a ride in a frictionless loop-the-loop at an amusement park. The radius of the loop-the-loop is R = 15 m. The force due to the seat on the student at the top of the loop-the-loop is FN = 696 N and is vertically down. What

  42. Science

    What are fuses and why do they come in different sizes? Fuses are devices placed in electrical circuits as protection for those circuits. They consist of small pieces of wire, sometime as ribbons, and are placed in series with the circuit so that the

  43. Computer Science (MATLAB)

    I had a test in my computer science course in which I was asked if any while loop can be replaced with a for loop. I put true. I guess the answer was false. My professor said that if you had a while loop in which you asked the user to input a certain value

  44. Computer Science (MATLAB)

    I had a test in my computer science course in which I was asked if any while loop can be replaced with a for loop. I put true. I guess the answer was false. My professor said that if you had a while loop in which you asked the user to input a certain value

  45. mathematica

    Christmas lights that stay on when one bulb burns out are wired as parallel circuits. Resistors can be used with parallel electrical circuits to restrict the current flow and produce heat. If the first resistor (R1) = 20 Ohms, the second resistor (R2) = 30

  46. Science

    Can you advise me on how to draw electrical circuits for equipment in my room such as my tv and stereo. Thanks

  47. Pysics

    A 0.480 kg, 37.5 cm long metal rod is sliding down two metal rails that are inclined 42 degrees to the horizontal. The rails are connected at the bottom so that the metal rod and rails form a loop that has a resistance of 52 ohm. There is a 2.0 T vertical

  48. electrical

    The minimum size of electrical cable recomended for use inpower circuits by the NEC in adomestic installation is

  49. physics

    Given circuits for f and f−1, we can create classical reversible circuits Rf, R−1f, Rf−1, R−1f−1 which are shown in the following figure. (Assume that f is a bijection.)In what sequence shall we apply the above circuits in order to implement a

  50. physics

    A mass m = 88 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 15.5 m and finally a flat straight section at the same height as the center of the loop (15.5 m off the ground). Since the mass would not make it

  51. Physics circuit help please!

    Hi all. I posted earlier but I'm still stuck on part of this problem. I thought that statements 2 and 3 were correct below. But I got the problem wrong. Any help would be great! Can the voltage across any of the three components in the R-L-C series circuit

  52. Physics help please!

    Hi all. I posted earlier but I'm still stuck on part of this problem. I thought that statements 2 and 3 were correct below. But I got the problem wrong. Any help would be great! Can the voltage across any of the three components in the R-L-C series circuit

  53. Physics

    A pilot, whose mass is 70.0 kg, makes a loop-the-loop in a fast jet. Assume that the jet maintains a constant speed of 325 m/s and that the radius of the loop-the-loop is 5.922 km. What is the apparent weight that the pilot feels (i.e., the force with

  54. physics

    A mass m = 76.0 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 19.7 m and finally a flat straight section at the same height as the center of the loop (19.7 m off the ground). Since the mass would not make it

  55. Physics

    A piece of copper wire is formed into a single circular loop of radius 13 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0 to 0.70 T in a time of 0.45 s. The wire has a resistance per unit length of 3.3 10-2 /m.

  56. Physics (Mechanics)

    A student of mass M = 62 kg takes a ride in a frictionless loop-the-loop at an amusement park. The radius of the loop-the-loop is R = 19 m. The normal force by the track on the student at the top of the loop-the-loop is N1 = 100 N Find the speed of M at

  57. energy

    A 9.97kg object slides along the frictionless loop the loop with a diameter of 3 m . what minimum speed must it have at the loop in order to remain in contact with the loop ?

  58. Physics

    Explain, with a diagram,how 2 plane mirror could be fixed at a dangerous T-junction so that a motorists approaching the junction could see all other traffic.

  59. physics

    A mass m = 88.0 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 15.8 m and finally a flat straight section at the same height as the center of the loop (15.8 m off the ground). Since the mass would not make it

  60. Science

    What is the rule for combining resistors in series and parallel circuits( combination circuits)?

  61. Physics

    In the figure below, a spider is resting after starting to spin its web. The gravitational force on the spider is 0.167 N on the junction of the three strands of silk. The junction is supported by different tension forces in the two strands above it so

  62. Physics II

    The force on the rectangular loop of wire in the magnetic field in the figure below can be used to measure field strength. The field is uniform, and the plane of the loop is perpendicular to the field. Justify the claim that the forces on the sides of the

  63. Physics repost

    I know I have posted this question before but I have tried everything under the sun to no avail. Please help a clueless student!!!! A piece of copper wire is formed into a single circular loop of radius 13 cm. A magnetic field is oriented parallel to the

  64. Physics URGENT!!!

    A massless spring of constant k =84.8 N/m is fixed on the left side of a level track. A block of mass m = 0.5 kg is pressed against the spring and compresses it a distance d, as in the figure below. The block (initially at rest) is then released and

  65. Physics URGENT!!!

    : A massless spring of constant k =84.8 N/m is fixed on the left side of a level track. A block of mass m = 0.5 kg is pressed against the spring and compresses it a distance d, as in the figure below. The block (initially at rest) is then released and

  66. physics

    A massless spring of constant k =60.9 N/m is fixed on the left side of a level track. A block of mass m = 0.7 kg is pressed against the spring and compresses it a distance d, as in the figure below. The block (initially at rest) is then released and

  67. Physics

    The radius of curvature of a loop-the-loop for a roller coaster is 11.8 m. At the top of the loop (with the car inside the loop), the force that the seat exerts on a passenger of mass m is 0.80mg. Find the speed of the roller coaster at the top of the

  68. Physics

    The radius of curvature of a loop-the-loop for a roller coaster is 11.8 m. At the top of the loop (with the car inside the loop), the force that the seat exerts on a passenger of mass m is 0.80mg. Find the speed of the roller coaster at the top of the

  69. physics

    The radius of curvature of a loop-the-loop for a roller coaster is 11.8 m. At the top of the loop (with the car inside the loop), the force that the seat exerts on a passenger of mass m is 0.80mg. Find the speed of the roller coaster at the top of the

  70. Physics

    The radius of curvature of a loop-the-loop for a roller coaster is 11.8 m. At the top of the loop (with the car inside the loop), the force that the seat exerts on a passenger of mass m is 0.80mg. Find the speed of the roller coaster at the top of the

  71. Physics repost

    Please help!! I have tried everything and is still coming up with and incorrect answer. A piece of copper wire is formed into a single circular loop of radius 13 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0

  72. Physics

    A massless spring of constant k = 88.9 N/m is fixed on the left side of a level track. A block of mass m = 0.50 kg is pressed against the spring and compresses it a distance of d. The block (initially at rest) is then released and travels toward a circular

  73. physics

    A mass m = 73 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 17.9 m and finally a flat straight section at the same height as the center of the loop (17.9 m off the ground). Since the mass would not make it

  74. physicssss

    A mass m = 73 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 17.9 m and finally a flat straight section at the same height as the center of the loop (17.9 m off the ground). Since the mass would not make it

  75. physics

    A small block of mass m = 1.1 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 56.0 m above the bottom of the loop of radius R = 17.0 m. What is the kinetic energy of the mass at the point A

  76. physics

    A small block of mass m = 1.1 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 56.0 m above the bottom of the loop of radius R = 17.0 m. What is the kinetic energy of the mass at the point A

  77. Physics

    There are two circular loop of wires and each has a single turn. One loop has radius R and the other 2R radius. The is a counterclockwise current flows in both loops. These two loops are placed on top of each other. Hence the smaller loop is inside the

  78. Physics -- Electromagnetic

    A 7.4 Ù ­ square loop, whose dimensions are 4:5 m x 4:5 m, is placed in a uniform 0.093 T magnetic field that is directed perpendicular to the plane of the loop The loop, which is hinged at each vertex, until the separation between points C and D is d =

  79. Physics

    A mass m = 85 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 19.2 m and finally a flat straight section at the same height as the center of the loop (19.2 m off the ground). Since the mass would not make it

  80. physics

    The figure below shows a current loop carrying current I. The loop is made of rectangular and semicircular sections with dimensions as shown. The loop lies in the xy-plane. An external magnetic field is applied B = Bx i + Bz k. Determine the torque (if

  81. Physics - electricity

    A thermo junction of iron and copper connected to a galvanometer cannot be used to measure temp above about 450K, whereas one of iron-constantan may be used to at least 875K. What is the explanation? Is it possible that melting at the junction point is a

  82. electromagnets

    A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? What is the magnitude of the torque

  83. electricity and magnetism

    A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? What is the magnitude of the torque

  84. magnetism

    A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? What is the magnitude of the torque

  85. magentism

    6.A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? b. What is the magnitude of the

  86. science

    What can be concluded if the family finds out the lights in the bathroom work, but the floor lamp and tv set still do not work? 1. The electrical service to the cabin has not gone off. 2. The bathroom lights are on the same circuit as the floor lamp and tv

  87. Physics

    A square loop of wire of side 3.0 cm carries 3.0 A of current. A uniform magnetic field of magnitude 0.67 T makes an angle of 37degree with the plane of the loop. What is the magnitude of the torque on the loop? What is the net magnetic force on the loop?

  88. Physics

    You build a loop-the-loop in your backyard. It has a diameter of 3.10 m. a) How fast will you have to be moving at the top of the loop to avoid falling off? The answer I got was 3.90 m/s. Is this correct? b)If you'll be coasting from the time you get to

  89. biology

    Describe the events that occur at the neuromuscular junction. (mechanism of action of neuromuscular junction)

  90. physics

    hi thank you for your help: i have a question that deals with finding the direction and magnitude of the net magnetic force on a loop that is next to a wire (the loop is in the wire's magnetic field) how do i set up a question like this? do i have to

  91. Physics - drwls?

    A small block of mass m = 4.0 kg can slide along the frictionless loop-the-loop. The block is released from rest at point P, at height h = 23R above the bottom of the loop (R is the radius of the loop). Express your answers in the form ngR, where n is the

  92. Physics

    ou build a loop-the-loop in your backyard. It has a diameter of 3.10 m. a) How fast will you have to be moving at the top of the loop to avoid falling off? b)If you'll be coasting from the time you get to the bottom of the loop, how fast will you have to

  93. Physics

    A jet pilot (80 kg) flies a loop-de-loop at a constant speed of 600 m/s. a) What minimum radius can the loop have so that the centripetal acceleration is no more than 6ag? b) Suppose that the pilot just happened to be sitting on a spring scale while flying

  94. Physics

    A jet pilot (80 kg) flies a loop-de-loop at a constant speed of 600 m/s. a) What minimum radius can the loop have so that the centripetal acceleration is no more than 6ag? b) Suppose that the pilot just happened to be sitting on a spring scale while flying

  95. Dynamics of rigid bodies

    An airplane having a mass of 3000kg performs a vertical loop to loop maneuver at 400km/hr. What is the radius of the largest circular loop possible?

  96. Physic II

    A conducting loop in the form of a circle placed perpendicular to a magnetic field of 0.40 T. If the area of the loop increases at m^2/s, what is the induced emf in the loop?

  97. PHYSICS Gr 12

    A pilot is flying his aircraft in a vertical loop. He can't stand "feeling" more than 7.0 g's at the bottom of the loop. If he travels at 800km/h, what is the radius of his loop?

  98. ohys

    Electricity may be generated by rotating a loop of wire between the poles of a magnet. The induced current is greatest when a. the plane of the loop is parallel to the magnetic field. b. the plane of the loop is perpendicular to the magnetic field. c. the

  99. physics

    A rectangular loop with a=2.9 cm, and b=1.9 cm, moving with a velocity v=3.8 cm/s into an area where the magnetic field is uniform, pointing into the page, and whose magnitude is B= 450 mT. a) What is in volts the induced emf in the loop when the loop is

  100. physics

    a rectangular loop with a=6.0 cm, and b=4.0 cm, moving with a velocity v=8.0 cm/s into an area where the magnetic field is uniform, pointing into the page, and whose magnitude is B= 440 mT. a) What is in volts the induced emf in the loop when the loop is

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