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4 years ago

What is sonar system ?

2 answers:

Pie4 years ago

5 0

Sonar system is a technique that uses sound propagation for underwater activities.Sonar is simply making use of an echo. When an animal or machine makes a noise, it sends sound waves into the environment around it. Those waves bounce off nearby objects, and some of them reflect back to the object that made the noise.

Rufina [12.5K]4 years ago

3 0

Sonar (originally an acronym for Sound Navigation And Ranging) is a technique that uses sound propagation usually underwater, as in submarine navigation to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels.

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Which nucleus completes the following equation? Se+? O A. Ga B. P C. 31P D. CI

Finger [1]

Answer:First option

Explanation:

hope it helped

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3 years ago

The barometer of a mountain hiker reads 930 mbars at the beginning of a hiking trip and 780 mbars at the end. Neglecting the eff

lara31 [8.8K]

We could use the change of pressure to calculate for the height climbed by the mountain hiker. The change of pressure is given by

p = rho * g * h, where p is the change of pressure, rho is the air density, g is the acceleration due to gravity, and h is the height.

Using the conversion 1 mbar = 100 Pa,

(930 - 780)(100) = (1.20)(9.80)h
15000 = 1.20*9.80*h

h = 1.28 km

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4 years ago

What is electron affinity?

Andrews [41]

Answer:

The electron affinity of an atom or molecule is defined as the amount of energy released when an electron is attached to a neutral atom or molecule in the gaseous state to form a negative ion.

4 0

3 years ago

A ball is thrown with velocity of 10 m/s upwards. If the ball is caught 1 m above its initial position, what is the speed of the

White raven [17]

Answer:

v = 8.96 m/s

Explanation:

Initial speed of the ball, u = 10 m/s

It caught 1 meter above its initial position.

Acceleration due to gravity, $g=-9.8\ m/s^2$

We need to find the final speed of the ball when it is caught. Let is equal to v. To find the value of v, use third equation of motion as :

$v^2-u^2=2as$

$v^2=2as+u^2$

$v^2=2(-9.8)\times 1+(10)^2$

v = 8.96 m/s

So, the speed of the ball when it is caught is 8.96 m/s. Hence, this is the required solution.

6 0

3 years ago

Read 2 more answers

State Pascal''s principle. Give and example of its use

BabaBlast [244]

Well, it is also known as the transmission of fluid pressure. So, it is a principle in fluid mechanics that says that pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such as the the pressure variations.

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4 years ago