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sp2606 [1]
3 years ago
9

HURRY

Physics
2 answers:
Lynna [10]3 years ago
8 0

Answer:

the answer is b or "The sound wave will not be generated, so there will be no echoes received."

Explanation:

Mrac [35]3 years ago
6 0

Answer:

It’s b

Explanation:

Everyone else is wrong and I tried this and got it right

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With light microscopy, if the objective lens (lens closest to the specimen) magnifies 40-fold, and the eyepiece lens magnifies 1
Fed [463]

The final magnification will be 400-fold or 400 times the original size of the object.

For magnifying smaller objects, a compound microscope is used.

A compound microscope consists of an objective and an eyepiece, whose diagram is shown in the adjoining image.

The lens  near  the object is called an objective and the other one is the eyepiece.

Let the magnification of the objective be m1

Let the magnification of the eyepiece be m2

The final magnification by the microscope, M, will be

M = m1 x m2

Putting the values in the above equation

M = 40 x 10

M= 400

Thus, the final magnification will be 400-fold or 400 times the original size of the object.

To know more about "optical instruments", refer to the link given below:

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2 years ago
Which of the following statements regarding heuristics and empiricism is true? A. Heuristics allows a priori theoretical concep
WITCHER [35]

Answer: <em>Option (A) is correct.</em>

Explanation:

A heuristic is  often referred to as an approach to solving problems or discovery that subjects a method, which is considered to be practical although might not be guaranteed to be perfect, optimal, or rational, but sufficient for reaching to goal.

Empiricism is known as a theory under which one can states that knowledge can only be imparted from the sensory experience. It is considered to be one of the main notions underlying in epistemology, i.e. known as the study of human knowledge, alongside skepticism and rationalism.

5 0
3 years ago
If the forces are equal and opposite why does the rocket ship move
qaws [65]
<span>A rocket in its simplest form is a chamber enclosing a gas under pressure. A small opening at one end of the chamber allows the gas to escape, and in doing so provides a thrust that propels the rocket in the opposite direction. A good example of this is a balloon. Air inside a balloon is compressed by the balloon's rubber walls. The air pushes back so that the inward and outward pressing forces are balanced. When the nozzle is released, air escapes through it and the balloon is propelled in the opposite direction.</span>
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A graph with a horizontal line
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What is the difference between newtons law of gravitation and Coulombs law?​
svlad2 [7]
Coulomb's law explains the force between the charges whereas Newton's law of gravitation explains the force between the masses. ... The electrostatic force may be positive or negative in the case of Coulomb's law but the force is always negative in the case of Newton's law of gravitation
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3 years ago
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