Answer:
The time required to receive the echo at the transducer is 
Explanation:
Frequency of ultrasonic beam, f = 5 MHz
It reflects off an object 5 cm deep.
We need to find the time required to receive the echo at the transducer. The ultrasonic wave is an electromagnetic wave. it moves with a speed of light. Let t is the time taken by the wave to go once.
So,
Time to receive the echo at the transducer gets doubled. So,
Hence, this is the required solution.
The answer is B.
The U.S DEA estimates 75% of people who try drugs become addicted.
Health is the state of your physical, social, and mental, well-being. An individual may have poor health or be very healthy,
Cleanliness/washing.
(Not exactly sure what a more professional term for the "step" is...)
But to wash out open wounds in the skin kills the bacteria that has already gone inside, as well as bacteria on the skin that can very easily make its way into the wound.
This also goes for internal infections, not only on the skin.
For example, drinking a lot of water, eating a lot of vitamin/nutrient/antioxidant rich foods can cleanse your blood, and help your body. It will make it stronger as well, making you less prone to infections, various diseases, and getting sick.
Hope this helped. :)
It depends on what the bully does. If he/she punches you then hit back. You would get in trouble for that but I'd rather get in trouble than get beat up all the time. If he/she hurts you with words, just ignore them. If they really do get on your nerves then respond back but don't start an arguement because you'll get mad and that's exactly what they want.
