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Ginny
Tangent line problem?
Find the equation in x and y for the line tangent to the curve given parametrically by x=12sin(2t), y=12cos(2t) at the point on the curve associated with t=pi/8
2 AnswersMathematics3 years ago
Induced FEM by moving bar?
A conducting rod is pulled horizontally with constant force F = 6.00 N along a set of rails separated by d = 0.66 m. A uniform magnetic field B= 0.40 T is directed into the page. There is no friction between the rod and the rails, and the rod moves with constant velocity v = 5.50 m/s. Using Faraday's Law, calculate the magnitude of the induced emf (in V) around the loop in the figure that is caused by the changing flux.
1 AnswerPhysics3 years agoStep-up transformer problem?
A step-up transformer is plugged into a 110 V source. The output voltage is 9131.3 V. If the primary coil contains 518 loops of wire, how many loops are there in the secondary (assume a whole number of loops)?
1 AnswerEngineering3 years agoInductance problem?
A solenoid of radius 2.32 cm has 347 turns and a length of 20.1 cm. Calculate its inductance.
Calculate the rate at which current must change through it to produce an EMF of 64.8 mV.
1 AnswerPhysics3 years agoSolenoid problem?
A solenoid of radius 2.32 cm has 347 turns and a length of 20.1 cm. Calculate its inductance.
Calculate the rate at which current must change through it to produce an EMF of 64.8 mV.
1 AnswerPhysics3 years agoElliptical loop spinning in the Earth's magnetic field?
A coil of 12 turns is in the shape of an ellipse having a major axis of 16.4 cm and a minor axis of 6.40 cm. The coil rotates at 138 rpm in a region in which the Earth's magnetic field is 69.3 μT. What is the maximum voltage induced in the coil if the axis of rotation of the coil is along its major axis and this axis of rotation is aligned perpendicular to the Earth's magnetic field?
What is the maximum voltage induced in the coil if the axis of rotation of the coil is along its major axis and this axis of rotation is aligned parallel to the Earth's magnetic field?
1 AnswerPhysics3 years agoElliptical loop spinning in the Earth's magnetic field?
A coil of 12 turns is in the shape of an ellipse having a major axis of 16.4 cm and a minor axis of 6.40 cm. The coil rotates at 138 rpm in a region in which the Earth's magnetic field is 69.3 μT. What is the maximum voltage induced in the coil if the axis of rotation of the coil is along its major axis and this axis of rotation is aligned perpendicular to the Earth's magnetic field?
What is the maximum voltage induced in the coil if the axis of rotation of the coil is along its major axis and this axis of rotation is aligned parallel to the Earth's magnetic field?
1 AnswerPhysics3 years ago
Solanoid problem?
A square, single-turn wire loop L = 1.83 cm on a side is placed inside a solenoid that has a circular cross section of radius r = 2.66 cm, as shown in the figure.
The solenoid is 21.1 cm long and wound with 150 turns of wire. If the current in the solenoid is 3.04 A, what is the flux through the loops?
If the current in the solenoid is reduced to zero in 2.94 s, what is the magnitude of the average induced EMF in the loop?
1 AnswerPhysics3 years agoMoving rectangular loop problem?
A single rectangular wire loop (width a=0.32 m, length b=0.5 m) is moving with a speed of 5.2 m/s to the right into an area with a 93 mT magnetic field (see figure below). What is the magnitude of the induced voltage?
1 AnswerPhysics3 years ago
Circuitry question?
The circuit diagram shows two identical voltage sources and three resistors in a network, as well as assumed current directions through the resistors. Which one of the following conditions is always correct regarding the indicated currents?
I1−I2−I3=0
I1+I2−I3=0
I1−I2+I3=0
I1+I2+I3=0
None of the above.
Which one of the following conditions is always correct regarding the voltage drops?
I1R1−I2R2−I3R3=0
2V+I1R1+I2R2+I3R3=0
2V−I1R1−I2R2=0
V+I1R1+I2R2=0
1 AnswerPhysics3 years ago
Calculus integral problem?
I got the 2nd one wrong despite entering the integral correctly, where did I make a mistake?
1 AnswerMathematics3 years ago
Calculus problem?
I got the 2nd answer wrong but I'm not sure why, I simply changed 25 to 26, shouldn't that work?
3 AnswersMathematics3 years ago
Calculus problem?
I got the answers wrong but I'm not sure what I'm doing wrong
2 AnswersMathematics3 years ago
Calculus cartesian problem?
No examples have been given for how to do a problem of this sort so I'm confused on how to proceed
1 AnswerMathematics3 years ago
Parametric curves problem?
What is the corresponding Cartesian equation for this curve (the equation in x and y only)?
2 AnswersMathematics3 years agoCalculus problem?
A particular curve is represented parametrically by x = -6sec(3t), y = 6tan(3t), t ∈ (-(pi/6), (pi/6))
What is the corresponding Cartesian equation for this curve (the equation in x and y only)?
Give the range of y-values for this curve
2 AnswersMathematics3 years ago
Calculus problem?
I'm not asking for the answer, just for how to go about solving this problem. I have been given no examples of similar problems so I'm not sure how to go about solving this one.
1 AnswerMathematics3 years ago
Maclaurin polynomial Calculus?
I've tried this question several times now, and I'm quite certain that the bottom answer is wrong despite asking for help and getting it wrong over and over.
1 AnswerMathematics3 years ago
Maclaurin polynomial question?
I got the first part but the 2nd part is confusing me right now.
1 AnswerMathematics3 years ago
