4.A signal travels from point A to point B. At point A, the signal power is 20 W. At point B, the power is 5 W. 4.1. What is the attenuation in dB? (No score if not show solution)
4.2. What is the attenuation in dBm? (No score if not show solution)
4.3. In case attenuation of a signal is -50 dB. What is the final signal power ? (No score if not show solution)

Why is it uncommon for users to perform searches directly in database tables? a.)users are discouraged from interacting directly with tables because they might confuse tables with spreadsheets. b.) users are discouraged from interacting directly with tables because this may result in unintended changes to source data. c.)users do not have the technical skills required to perform searches directly in database tables. d.)users do not have the permissions required to perform searches directly in database tables.

Fast answer i need for apex ! smartphones should be banned from the classroom in public schools so that students cannot cheat on test so easily? which is an example of a counter argument to the thesis above? a.the classroom is a place for learning not for making phone calls b. smartphones are useful learning tools in the modern classroom c.banning smartphones will not students pay attention to teachers any better d. banning smartphones would decreased incidents of theft

Match the categories in the first column with examples in the second column. 1. good for watching movies 2. maximum power with small size 3. older style mobile devices that may or may not have internet connectivity tablet computer a.)pda b.)smart phone c.)tablet computer