• ### Calculus inverse problem?

How is this problem solved? There is no example problem and I haven't seen something like this in class so I'm not sure what it's asking me to do.
How is this problem solved? There is no example problem and I haven't seen something like this in class so I'm not sure what it's asking me to do.
2 answers · Mathematics · 11 months ago
• ### Integral volume problem?

Let R be the region bounded by the parabola y=x2 and the line y=16. What is the volume of the solid generated when R is rotated about the line y=16? I keep getting 2048pi/5 but that's always wrong so I need to know how I'm messing up.
Let R be the region bounded by the parabola y=x2 and the line y=16. What is the volume of the solid generated when R is rotated about the line y=16? I keep getting 2048pi/5 but that's always wrong so I need to know how I'm messing up.
2 answers · Mathematics · 11 months ago
• ### Mass and energies of a relativistic particle?

Particle X has a speed of 0.890 c and a momentum of 6.85×10-19 kgm/s. What is the mass of the particle? What is the rest energy of the particle? What is the kinetic energy of the particle? What is the total energy of the particle?
Particle X has a speed of 0.890 c and a momentum of 6.85×10-19 kgm/s. What is the mass of the particle? What is the rest energy of the particle? What is the kinetic energy of the particle? What is the total energy of the particle?
1 answer · Physics · 1 year ago
• ### Refracted sunlight problem?

Sunlight strikes a piece of crown glass at an angle of incidence of 38.2o. Calculate the difference in the angle of refraction between a yellow (580 nm) and a blue (470 nm) ray within the glass. The index of refraction is n=1.523 for yellow and n=1.531 for blue light. The ray now travels inside the glass. What is the minimum angle of incidence at... show more
Sunlight strikes a piece of crown glass at an angle of incidence of 38.2o. Calculate the difference in the angle of refraction between a yellow (580 nm) and a blue (470 nm) ray within the glass. The index of refraction is n=1.523 for yellow and n=1.531 for blue light. The ray now travels inside the glass. What is the minimum angle of incidence at which the yellow ray can hit the surface of the glass and become there totally internally reflected and not refracted? I tried answering the first question and ended up with a difference of .0333, but that answer ended up being wrong for some reason.
Physics · 1 year ago
• ### Force on square loop?

A long, straight wire has a 12.7 A current flowing in the positive x-direction, as shown in the figure. Close to the wire is a square loop of copper wire that carries a 2.63 A current in the direction shown. The near side of the loop is d = 39.3 cm away from the wire. The length of each side of the square is a = 1.09 m. Find the net force between... show more
A long, straight wire has a 12.7 A current flowing in the positive x-direction, as shown in the figure. Close to the wire is a square loop of copper wire that carries a 2.63 A current in the direction shown. The near side of the loop is d = 39.3 cm away from the wire. The length of each side of the square is a = 1.09 m. Find the net force between the two current-carrying objects.
Physics · 1 year ago
• ### Current in RL circuit?

The switch in a series RL circuit in which R = 6.30 Ω, L = 3.80 H, and ∆V = 21.1 V is closed at t = 0.0 s. What is the maximum current in the circuit? What is the current when t = 0.603 s?
The switch in a series RL circuit in which R = 6.30 Ω, L = 3.80 H, and ∆V = 21.1 V is closed at t = 0.0 s. What is the maximum current in the circuit? What is the current when t = 0.603 s?
1 answer · Engineering · 1 year ago
• ### Current in RL circuit problem?

An R = 41.5 Ω resistor is connected in series with a C = 17.2 μF capacitor and a 177 Hz, 115 V source. The current in the circuit is 1.72 Amps. What is the value of the inductor that must be inserted in the circuit to reduce the current to one half that found in the previous problem?
An R = 41.5 Ω resistor is connected in series with a C = 17.2 μF capacitor and a 177 Hz, 115 V source. The current in the circuit is 1.72 Amps. What is the value of the inductor that must be inserted in the circuit to reduce the current to one half that found in the previous problem?
4 answers · Engineering · 1 year ago
• ### Reactance of a capacitor?

A certain capacitor in a circuit has a capacitive reactance of 37.3 Ω when the frequency is 115 Hz. What capacitive reactance does the capacitor have at a frequency of 23.6 kHz?
A certain capacitor in a circuit has a capacitive reactance of 37.3 Ω when the frequency is 115 Hz. What capacitive reactance does the capacitor have at a frequency of 23.6 kHz?
4 answers · Physics · 1 year ago
• ### Energy stored in a solenoid?

A 2230-turn solenoid has a radius of 5.55 cm and a length of 21.4 cm. Find the energy stored in it when the current is 0.765 A.
A 2230-turn solenoid has a radius of 5.55 cm and a length of 21.4 cm. Find the energy stored in it when the current is 0.765 A.
1 answer · Physics · 1 year ago
• ### Inductor in RLC circuit to limit current?

An R = 41.5 Ω resistor is connected in series with a C = 17.2 μF capacitor and a 177 Hz, 115 V source. Calculate the current in the circuit. What is the value of the inductor that must be inserted in the circuit to reduce the current to one half that found in the previous problem?
An R = 41.5 Ω resistor is connected in series with a C = 17.2 μF capacitor and a 177 Hz, 115 V source. Calculate the current in the circuit. What is the value of the inductor that must be inserted in the circuit to reduce the current to one half that found in the previous problem?
1 answer · Physics · 1 year ago
• ### Power and power factor of an AC circuit?

An R = 54.0 Ω resistor is connected to a C = 60.7 μF capacitor and to a ∆VRMS = 113 V, and f = 105 Hz voltage source. Calculate the power factor of the circuit. Calculate the average power delivered to the circuit. Calculate the power factor when the capacitor is replaced with an L = 0.117 H inductor. Calculate the average power delivered to... show more
An R = 54.0 Ω resistor is connected to a C = 60.7 μF capacitor and to a ∆VRMS = 113 V, and f = 105 Hz voltage source. Calculate the power factor of the circuit. Calculate the average power delivered to the circuit. Calculate the power factor when the capacitor is replaced with an L = 0.117 H inductor. Calculate the average power delivered to the circuit now.
3 answers · Engineering · 1 year ago
• ### Circuit physics problem?

In a certain RLC circuit, the RMS current is 6.88 A, the RMS voltage is 238 V, and the current leads the voltage by 51.8°. What is the total resistance of the circuit? Calculate the total reactance X = (XL - XC) in the circuit. Calculate the average power dissipated in the circuit.
In a certain RLC circuit, the RMS current is 6.88 A, the RMS voltage is 238 V, and the current leads the voltage by 51.8°. What is the total resistance of the circuit? Calculate the total reactance X = (XL - XC) in the circuit. Calculate the average power dissipated in the circuit.
1 answer · Physics · 1 year ago
• ### Spinning square coil problem?

A 113-turn square wire coil of area 484 cm2 and L = 22.0 cm rotates about a vertical axis at 1230 rpm, as indicated in the figure. The horizontal component of the Earth's magnetic field at the location of the loop is 2.20×10-5 T. Calculate the maximum EMF induced in the coil by the Earth's field.
A 113-turn square wire coil of area 484 cm2 and L = 22.0 cm rotates about a vertical axis at 1230 rpm, as indicated in the figure. The horizontal component of the Earth's magnetic field at the location of the loop is 2.20×10-5 T. Calculate the maximum EMF induced in the coil by the Earth's field.
1 answer · Physics · 1 year ago
• ### Two parallel wires problem?

Two long parallel wires are shown in the figure below. They are separated by a distance L = 19.0 cm. The bottom wire carries a current of 4.10 A in the direction shown. The current of the upper wire is directed in the opposite direction. The total magnetic field at point A is zero, and the distance d between point A and the bottom wire is 10.0 cm.... show more
Two long parallel wires are shown in the figure below. They are separated by a distance L = 19.0 cm. The bottom wire carries a current of 4.10 A in the direction shown. The current of the upper wire is directed in the opposite direction. The total magnetic field at point A is zero, and the distance d between point A and the bottom wire is 10.0 cm. What is the current in the top wire?
1 answer · Physics · 1 year ago
• ### Elliptical 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... show more
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 answer · Physics · 1 year ago
• ### Magnetic flux of a solenoid?

A solenoid 4.94 cm in diameter and 23.0 cm long has 236 turns and carries a current of 15.7 A. Calculate the magnetic flux through the circular cross-sectional area of the solenoid.
A solenoid 4.94 cm in diameter and 23.0 cm long has 236 turns and carries a current of 15.7 A. Calculate the magnetic flux through the circular cross-sectional area of the solenoid.
2 answers · Physics · 1 year ago
• ### Multimeter problem?

Consider the circuit shown in the figure. The multi-meter M is a multi-mode measuring instrument capable to measure either voltage or current depending on its mode switch. Use the following data: ε = 15.0 V, R1 = 13.5 Ω, R2 = 38.7 Ω, R3 = 37.8 Ω, R4 = 14.5 Ω. The magnitude of the voltage shown by the multi-meter, when it is set in the voltmeter... show more
Consider the circuit shown in the figure. The multi-meter M is a multi-mode measuring instrument capable to measure either voltage or current depending on its mode switch. Use the following data: ε = 15.0 V, R1 = 13.5 Ω, R2 = 38.7 Ω, R3 = 37.8 Ω, R4 = 14.5 Ω. The magnitude of the voltage shown by the multi-meter, when it is set in the voltmeter mode, is 6.96 V What is the magnitude of the current shown by the multi-meter, when it is set in the ammeter mode?
2 answers · Engineering · 1 year ago
• ### Resistivity of wire?

A wire has a diameter of 5.76 mm, an electric current of I=16.9 A, an electric field of E=5.34*10^-2 V/m, a current density of 6.69*10^5, and a conductivity of 1.25*10^7. What is the resistivity of the wire?
A wire has a diameter of 5.76 mm, an electric current of I=16.9 A, an electric field of E=5.34*10^-2 V/m, a current density of 6.69*10^5, and a conductivity of 1.25*10^7. What is the resistivity of the wire?
3 answers · Physics · 1 year ago
• ### Current density of a wire question?

A d = 5.67 mm diameter wire carries an electric current of I = 16.9 A when the electric field is E = 5.34×10-2 V/m along the wire. What is the current density?
A d = 5.67 mm diameter wire carries an electric current of I = 16.9 A when the electric field is E = 5.34×10-2 V/m along the wire. What is the current density?
1 answer · Physics · 1 year ago
• ### Physics resistance question?

3 answers · Physics · 1 year ago