PHYSICS HIGH SCHOOL

What is the total magnification of a microscope with two lenses when one lenses has a magnification of 15 and the other lens has magnification of 30- 15

- 30

- 45

- 450

Answers

Answer 1
Answer:

Answer:

45 easy and if u ever need anything holla

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a gust of wind blows an apple from a tree. As the apple falls, the gravitational force on the apple is 2.25N downward and the force of the wind on the apple is 1.05N to the right. Find the magnitude and the direction of the net force on the apple.

Answers


Vertical component =  2.25 N downward

Horizontal component = 1.05 N to the right

Magnitude of the net force = √ (2.25² + 1.05²)
                                              = √6.165 =              2.483 N  (rounded)

Direction of the net force = tan⁻¹ (1.05/2.25) to the right of downward

                                           = tan⁻¹ ( 7/15 ) to the right of downward

                                           = 25° to the right of downward (rounded)

The magnitude of the net force on the apple is \boxed{2.48{\text{ N}}}.

The direction of the net force is with vertical \boxed{25^\circ}.

Further explanation:

Here, we have to calculate the magnitude and the direction of the net force on the apple.

Given:

The gravitational force exerted on the apple is 2.25{\text{ N}}.

Force exerted by the wind on the apple is 1.05{\text{ N}}.

Formula and concept used:

The gravitational force is a universal force and it act in downward direction that is towards the center of the earth.

The direction of the force exerted by the wind on the apple is towards write side in the horizontal direction.

So, the angle between the gravitational force and force due to wind will be 90^\circ that is both the forces are perpendicular to each other.

Consider gravitational force is W and force due to wind is F.

So, the net force applied on the apple is,

\boxed{R=\sqrt {\left( {{W^2} + {F^2} + 2WF\cos \theta } \right)} }

Here, \theta is the angle between both the forces which is equal to the 90^\circ.

So, the above equation can be written as,

R=\sqrt {{W^2} + {F^2}}                                                                                   …… (1)

The direction of the net force can be written as,

\boxed{\phi={{\tan }^( - 1)}\left( {(F)/(W)}\right)}                                  ….. (2)

Calculation:

Substitute 2.25{\text{ N}} for W and 1.05{\text{ N}} for F in the equation (1).

\begin{aligned}R&=\sqrt {{{2.25}^2}+{{1.05}^2}}\n&=\sqrt {6.165}\n&=2.48{\text{ N}}\n\end{gathered}

For the direction,

Substitute 2.25{\text{ N}} for W and 1.05{\text{ N}} for F in the equation (2).

\begin{aligned}\phi&={\tan ^( - 1)}\left( {\frac{{1.05}}{{2.25}}} \right)\n&=25^\circ\n\end{aligned}

Thus, the net force on the apple is \boxed{2.48{\text{ N}}} and direction of the net force is with vertical \boxed{25^\circ}.

Learn more:

1. Water is a compound: brainly.com/question/1073452

2. Expansion of the gas with change in temperature: brainly.com/question/9979757

3. Two arrows are fired simultaneously with the speed of 30m/s brainly.com/question/2370982

Answer detail:

Grade: Senior School

Subject: Physics

Chapter: Force

Keywords:

Wind blow, apple falls, gravitational force, wind force, magnitude of force, direction of force, 2.25N downward, 1.05N, magnitude and direction, net force on apple.

Water _____.a. has a pH value of 0
B: expands when it freezes
C: is less dense than ice
D: dissolves in most substances

Answers

Water does not have a pH of 0, its actually 7. Also, it is not less dense than ice. Lastly, it does not dissolve in most substances, its the complete opposite. As its a solvent, not a solute. 

Answer: B

After generating a hypothesis, a scientist next: A. designs a series of tests. B. formulates a theory. C. makes a prediction. D. writes a grant proposal. E. does an experiment.

Answers

The answer is (c) because

When a refrigerant condenses, the surrounding air is _____.a) condensed

b) cooled

c) warmed

d) unchanged

Answers

When a refrigerant condenses, the surrounding air is warmed. The correct option is c.

What is a refrigerant?

The refrigerant is a working fluid in a refrigerator which is capable of changes of phase at low temperatures.

A refrigerator undergoes a vapor compression refrigeration cycle using the working fluid.

When a refrigerant condenses, the surrounding air is warmed.

Thus, the correct option is c.

Learn more about refrigerant

brainly.com/question/2928084

#SPJ2
When a refrigerant condenses, the surrounding air is "Warmed"

In short, Your Answer would be Option C

Hope this helps!

Diffraction patterns are due to

Answers

diffraction patterns are due to diffraction i think  or self interference

Answer:

Diffraction patterns are due to INTERFERENCE.

Explanation:

Which of the following are pure substances?a. solutions
b. compounds
c. homogeneous mixtures
d. colloids

Answers

The pure substances are c. homogenous mixtures
I think it's C hope this help
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