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Which type of shift keying technique is used in two tone modulation for code transmission? How is it beneficial than the other type of keying?
Define the word modulation. Describe the requirement of modulation. Name three different kinds of modulation used for a message signal by using a sinusoidal continuous carrier wave. Describe the mea
What do you mean by the term critical frequency for sky wave propagation? Write down an expression for the critical frequency in terms of the maximum electron density of the ionosphere. Determine th
What are the three fundamental units of a communication system?
What is an electric polarization of a dielectric? What is the consequence on capacitance of a capacitor when a dielectric of width ‘t’ is placed between the two plates of parallel plate
Three charges Q, + q and + q are placed at the vertices of a right angle isosceles triangle as shown below. Find out the magnitude of Q for which total electrostatic energy of the configuration is z
Why does the electric field in a dielectric decrease when it is placed in an external electric field?
Why can one ignore quantization of charge when dealing with the macroscopic charges?
A stone is dropped from the top of a 95.0 m building. The second stone is dropped 0.75 s later. How far from the ground is this second stone when the first stone hits the ground?
A car accelerates uniformly from rest to a velocity of 101 km/h east in 8.0 s. What is the magnitude of its acceleration?
You jog once around an oval track in 6.0 minutes at an average speed of 1.7 mIs. a) Determine the distance travelled? b) Determine the displacement?
A small child throws a rock vertically downward with an initial velocity of 6.0 m/s from the top of a 225 m building. How far does the rock travel in the first 6.0 seconds of its drop?
A car is traveling at a velocity of 82 km/h 32° N of W. a) Determine the west component of the velocity? b) Determine the south component of the velocity?
A small plane makes a complete circle with a radius of 3282 m in 2.0 min. Determine the centripetal acceleration of the plane?
A curve of radius 120 m is banked at an angle of 18°. At what speed can it be negotiated beneath icy conditions where friction is negligible?
If the speed is doubled, does the centripetal force double? If not by what factor does the centripetal force raise? Why?
An asteroid consists of an orbital radius of 4.8 x 1011 m and a mass of 1.4 x 1018 kg. Find out its period of rotation around the sun?
Jupiter is 7.78 x 1011 m from the sun and has a mass of 1.90 x 1027 kg. Determine the force of gravity due to the sun acting on Jupiter?
Compute the Kepler’s constant for objects rotating around the sun given that the earth has a period of revolution around the sun of 3.16 x 107 s and an orbital radius of 1.49 x 1011 m.
A car travels around a curved path that consists of a radius of 225 m at a constant speed of 26.0 m/s. Determine the centripetal acceleration of the car?
Joe wishes to hang a sign weighing 750 N so that cable A joined to the store makes a 30° angle as shown by θ in the figure. Cable B is attached to an adjoining building. Compute the tensio
A crazed 4-year old on a tricycle is chasing Jordan. When the child hits Jordan his acceleration is 1.5m/s2 and his mass is 32 kg. What is the force applied on Jordan by the angry 4-year old?
The distance between successive crest in a sequence of water waves is 4.0 m and the crests travel 9.0 m in 4.5 s. Determine the frequency of the waves?
A 1.3 kg mass on a spring consists of a maximum speed of 1.4m/s and a spring’s constant of 3.4 N/m. Determine its displacement when it is moving at 0.65m/s?
A person on a dock counts 8 troughs going by in 20 seconds. The distance between the troughs is .75m. Determine the speed of the waves?