Wireless communications a)The following signal represents a 4-bit amplitude modulated signal (10102). What is the carrier frequency? b)You want to transmit the capital letter J over a free space optical link. Assume the link uses a laser which operates at a wavelength of 1200 nm and generates a sinusoidal carrier frequency of 1 kHz, a constant bit time of 4 msec (e. g. each bit sent takes 4 msec to send), and the system sends the most significant bit first. Plot the amplitude versus time for an on-off keyed (OOK) signal, normalizing the amplitude to 1. (Hin

If you turn on the lock alpha button , what happens

This first part of the film shows the early history of motion pictures. how accurate do you think the portrayal of the early motion picture industry is? why? is historical accuracy important in films and theatre productions? explain. in the scene where don is going to the party (starting at time code 14: 51), we see a street scene as he first rides with cosmo and then with kathy. what aspects did the filmmaker include to make the scene look and feel like don, cosmo, and kathy are riding in a car on a street? think about elements such as scenery, sound, props, lighting, and so on. a "talkie" picture is shown starting around time code 21: 15. how does the audience in the film react to the "talkie"? what influence do audiences have on film and theatre performances? how do film and theatre actors influence audiences? in the musical scene with cosmo (starting at time code 27: 00), how does the actor use props? what is the result? do you think the use of props effectively fulfilled the artistic vision for this musical number? why or why not?

Rachel completed typing an official document with a word processing program. she wants to make sure that her document has no typographical errors. she also wants all headings to have the same font. which features in a word processing program should she use? rachel should use the feature in a word processing program to find typographical errors. she should apply to have uniform headings.