Electrical Engineering Concepts

A climate control system, a motor load, and a lightning circuit of a small warehouse establish a 20kVA power demand at 0.587 power factor lagging on a 240 V, 60 Hz supply. a) Establish the power... more

12/16/23

Integral S Calculus 3 Question

Evaluate ∬S​F⋅dS where F=−xi+2yj​−zk and S is the portion of y=3x2+3z2 that lies behind y=6 oriented in the positive y-axis direction.Thank you in advance!

12/13/23

Equilibrium: Rotational Motion

A 2150 kg drawbridge, 8.74 m long, is held up by a chain attached to the end. The chain makes a 51.0 degree angle. What force does the chain exert? (Don't forget: w=mg, at the center of the... more

12/12/23

RLC Circuit help

In an RLC circuit:R = 2 OmegaL = 3 HC = 8 FA phasor diagram is drawn for this circuit and it is found that:the phasor for the inductor is 3 times longer than the phasor for the resistorthe phasor... more

Solve the following DE using undetermined coefficients

x'' - 2x' + x = e^t/t

Solve the Differential equation by variation of parameters

(2D^3 - D^2 + 8D - 4)y = 5x - cos x

11/30/23

At a certain moment a 100-gallon mixing tank is full of brine containing 0.25 pounds of salt per gallon.

At a certain moment a 100-gallon mixing tank is full of brine containing 0.25 pounds of salt per gallon. Find the amount of salt present t minutes later if the brine is being continuously drawn off... more

11/30/23

A 200-liter tank, initially full of water, develops a leak at the bottom.

A 200-liter tank, initially full of water, develops a leak at the bottom. Given that 20% of the water leaks out in the first 5 minutes, find the amount of water left in the tank t minutes after the... more

Parallel Wires Question Physics

Two long, parallel wires separated by 2.50 cm carry in opposite directions. The current in on wire is 1.25 A, and the current in the other is 3.50 A. (a) Find the magnitude of the force per unit... more

Magnetic field question

The magnetic field 40.0 cm away from a long, straight wire carrying current 2.00 A is 1.00 μT. (a) At what distance is it 0.100 μT? (b) at one instant, the two conductors in a long household... more

11/26/23

Directionality Physics 2 Question

A long, straight wire lies on a horizontal table in the xy-plane and carries a current of 1.20 μA in the positive x-direction along the x-axis. A proton is traveling in the negative x-direction at... more

11/25/23

Q8: Prb 1 - This problem has three parts to this. I will type out the questions for each of the three parts along with additional info in "Description" below.

A boy is riding a bicycle. The boy and the bicycle together have a combined mass of m = 147 kg and a linear momentum of magnitude P = 1072 kg*m/s. Part a) Write an expression for the boy's speed,... more

11/18/23

Please Solve This Physics Problem

A particle of mass 4.4 kg has position vector r = (1.9î − 2.6ĵ) m at a particular instant of time when its velocity is v = (2.6î) m/s with respect to the origin. (Express your answers in vector... more

Power (electrical engineering) question regarding power absorbed vs delivered

Q: A load consisting of a 480 Ohm resistor in parallel with a (5/9) microFarad capacitor is connected across the terminals of a sinusoisal voltage Vg, where Vg = 240 * cos (5000t) Volts.a) What is... more

11/17/23

Calculate the time this took.

An electric current of 290.0 mA transports 0.90 kC of charge. Calculate the time this took.Be sure your answer has the correct unit symbol and 2 significant digits.

11/14/23

Potential energy

A magnetized sewing needle has a magnetic moment of 9.70x10−3Am2 . At its location, the Earth’s magnetic field is 55.0 T northward at 48.0o below the horizontal. Identify the orientations of the... more

11/14/23

Q7 - This problem has two parts. I will state the questions for each of those two parts, as well as any other additional info below in "Description".

A tennis ball of mass m = 0.076 kg is thrown straight up with an initial speed v0 = 12 m/s. Let the gravitational potential energy be zero at the initial height of the tennis ball. Part a) What is... more

11/14/23

Q7 - This problem has three parts. I will list the questions for each of the three parts, and any other additional info in the "Description" below.

The pump in a water tower lifts water with a density of pw = 1.00 kg/liter from a filtered pond at the base of the tower up hT = 21 m to the top of the tower. The water begins at rest in the pond... more

11/13/23

Find the largest possible window

A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window... more

11/13/23

[Related Rates] How fast is the bottom moving along the ground when the bottom of the ladder is 5 ft from the wall?

A 10-ft ladder is leaning against a wall. If the top of the ladder slides down the wall at a rate of 2 ft/sec, how fast is the bottom moving along the ground when the bottom of the ladder is 5 ft... more

11/11/23

Please Solve This Physics Problem

(a) Calculate the rotational kinetic energy (in J) of Venus on its axis. (Assume its mass to be 4.90 ✕ 1024 kg, the period about its axis to be 5830 h, and its diameter to be 12100 km.) (b) What is... more

11/10/23

Applications- Incl. Minimum and Maximum

An object is thrown upward at a speed of 99 feet per second by a machine from a height of 3 feet off the ground. The height hℎ of the object after t� seconds can be found using the... more

11/10/23

Heat Transfer│Please Help!

A beaker contains 25 g of liquid at 15 C. The specific heat of the liquid is 2.56 J/g°C. If the liquid absorbs 704 J of heat, what is the final temperature of the liquid? 

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