Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Search & Filtering

Four point charges (two with q=2.50Β΅C and two with q=-3.0Β΅C) are situated at the corners of a square of a side 1.0m. Find the resultant force that the charge at A will experience due to charges at the corners of the square and it’s direction.




(this question had a diagram but the diagram looks like a square, qA is in the top left corner, qB is in the top right corner. -qC is in the bottom corner of left and -qD is in the bottom corner of right.)

. (a) Find the change in wavelength of 80-pm x-rays that are


scattered 120Β° by a target. (b) Find the angle between the directions of the recoil electron and the incident photon. (c) Find


the energy of the recoil electron.

A plane wave traveling along the x-axis in a polystyrene-filled region with πœ€π‘Ÿ = 2.54 has an electric field given by 𝐸𝑦=𝐸0cos(πœ”π‘‘βˆ’π‘˜π‘₯). The frequency is 2.4 GHz, and 𝐸0= 5.0 V/m.

Find the following:

1.1.1. The amplitude and direction of the magnetic field;

1.1.2. The phase velocity;

1.1.3. The wavelength; and

1.1.4. The phase shift between the positions π‘₯1=0.1π‘š and π‘₯2=0.15π‘š


A bottle dropped from a balloon reaches the ground in 20.0 s. Determine the height of the balloon if a) it was at rest in the air and b) it was ascending with a speed of 50.0 m/s when the bottle was dropped


The acceleration due to gravity at the surface of Mars is roughly 2/5 of Earth’s β€œg”. If an astronaut on Mars were to toss a wrench upward with a speed of 10 m/s, find a) how long it would rise, b) how high it would go, c) its speed at t = 3.0s , and d) its displacement at t = 3.0s.


A car is accelerating uniformly as it passes two checkpoints that are 30 m apart. The time taken between checkpoints is 4.0 s and the car’s speed at the first checkpoint is 5.0 m/s. Find the car’s acceleration and its speed at the second checkpoint. (calculus based)


The velocity of light in a liquid is 0.80 as fast as it is in air. What is the index of



refraction of the liquid?

The velocity of light in a liquid is 0.80 as fast as it is in air. What is the index of




refraction of the liquid?

A copper microstrip transmission line is to be designed for a 100 Ξ© characteristic impedance. The substrate is 0.51 mm thick, πœ€π‘Ÿ = 2.2 and tan Ξ΄ = 0.001.

At 5 GHz, find:

3.1.1. The guide wavelength on the line (in cm) and;

3.1.2. The total attenuation in dB/cm.


A circular copper waveguide has a radius of 0.4 cm and is filled with a dielectric material having πœ€π‘Ÿ = 1.5 and tan Ξ΄ = 0.0002.

2.1.1. Identify the first four propagating modes and their cut-off frequencies.

2.1.2. For the dominant mode, calculate the attenuation due to dielectric loss and attenuation due to conductor loss at 20 GHz.