, 21.06.2019 17:00 dmurdock1973

Why is there friction between objects

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Physics, 21.06.2019 22:00
A650 mhz receiver with a 2 dbi gain antenna and input impedance of 50 î© detects a signal with a peak voltage of 310 lv. a) what is the average received power in dbm at the receiver? (7 points) b) what is the power density at the location of the receiver? (7 points) c) if the transmitter is operating with a power of 50 w and employs a 6 dbi gain antenna, what is its distance from the receiver? (7 points) d) excluding antenna gains, what is the free space path loss between the transmitter and the receiver, in db? (7 points)
Physics, 21.06.2019 23:30
An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector   between points f and g.