Answer:
69.54
Explanation:
A power ratio of 9000000:1 corresponds to 69.54 dB.
The calculation is presented below:
Formula for calculating Power ratio (db) = 10 * log [P(out)/P(in)]
Since the given ratio is 9000000:1, substituting in the formula gives us 10 * log (9000000/1)
Note that log 9000000 = 6.954
Therefore, 10 * log (9000000/1) = 69.54
Hence the required power ratio in db is 69.54 db.
Answer: e) a, b, and c
Explanation: OnStar system is the secondary service that is provided by the General Motor Corporation , who is the parent company of this system.The services like in-vehicle protection, diagnosing issues from distance emergency services, communication services based on subscriptions, turn by turn navigation etc.
Conversation started with OnStar member by vehicle owner is communication service in hands -free way, vehicle sending message to OnStar member after mishap/accident is type of emergency services and OnStar member putting off the gas pedal without the permission of driver of the the vehicle is also a protect service .Thus, all the given options are correct.
Answer: The answer is Proximity.
Explanation:
SSD stands for system sequence diagrams. SSd diagrams <span>model the interactions between objects in a single use case and illustrate how the different parts of a </span>system<span> interact with each other </span>
On an SSD, a dashed arrow usually represents an object. SSD <span>depicts the </span>objects<span> and classes involved in the scenario and the </span>sequence<span> of messages exchanged between the </span><span>objects.</span>
