Why might the 1990 earthquake and volcanic eruption in Luzon be related?

Problem 1: Spherical mirrorConsider a spherical mirror of radius 2 m, and rays which go parallel to the optic axis. What is thep

SIZIF [17.4K]

Answer:

1) iii i= 1m, 2) iii and iv, 3) i = f₂ (L-f₁) / (L - (f₁ + f₂))

Explanation:

Problem 1

For this problem we use two equations the equations of the focal distance in mirrors

f = r / 2

f = 2/2

f = 1 m

The builder's equation

1 / f = 1 / o + 1 / i

Where f is the focal length, "o and i" are the distance to the object and the image respectively.

For a ray to arrive parallel to the surface it must come from infinity, whereby o = ∞ and 1 / o = 0

1 / f = 0 + 1 / i

i = f

i = 1 m

The image is formed at the focal point

The correct answer is iii

Problem 2

For this problem we have two possibilities the lens is convergent or divergent, in both cases the back face (R₂) must be flat

Case 1 Flat lens - convex (convergent)

R₂ = infinity

R₁ > 0

Cas2 Flat-concave (divergent) lens

R₂ = infinity

R₁ <0

Why the correct answers are iii and iv

Problem 3

For a thick lens the rays parallel to the first surface fall in their focal length (f₁), this is the exit point for the second surface whereby the distance to the object is o = L –f₁, let's apply the constructor equation to this second surface

1 / f₂ = 1 / (L-f₁) + 1 / i

1 / i = 1 / f₂ - 1 / (L-f₁)

1 / i = (L-f₁-f₂) / f₂ (L-f₁)

i = f₂ (L-f₁) / (L - (f₁ + f₂))

This is the image of the rays that enter parallel to the first surface

6 0

2 years ago

All organisms require a set of instructions that specify its traits. The instructions that are responsible for all the inherited

garri49 [273]

The genes that are inside the chromosomes of the cell.

5 0

2 years ago

Read 2 more answers

Gina is driving her car to work, but she’s stopped at a red light. When the light turns green, she presses the gas pedal and acc

Vlad [161]

Since car is initially at rest so at that position the net force on car in vertical as well as horizontal both direction is zero

but after lights are green the car will speed up in horizontal direction

so now we can say that

It will accelerate in horizontal direction

So now as per Newton's formula we have

$F = ma$

so now the force in horizontal direction will become nonzero while in vertical direction car is still in equilibrium

So now we can say

$F_x = ma$

$F_y = 0$

so the correct answer will be

C. The net force on the car is greater than zero in the horizontal direction.

4 0

2 years ago

What do you need to know to analyze the forces in a situation?

alukav5142 [94]

Answer:

An analysis yielding the respective forces acting at any point of any member, or part of a member, of a mechanism, obtained by using relationships for dynamic equilibrium in a plane rigid body subject to external forces within this plane and to internal forces due to its motion in this plane.

6 0

1 year ago

A motorist traveling with a constant 15m/s passes a school crossing conner where the speed limit is 10m/s,just as a motorist pas

aleksklad [387]

Answer:

The answer is 5 seconds;

Explanation:

<h3>a) We know that the speed(V) is 15 m/s and acc. (a) is 3 m/s^2 </h3><h3>b) The formula for the acceleration is a= $\frac{V}{t}$ ;</h3><h3>Using this formula we can define the next equation:</h3><h3>3 = $\frac{15}{t}$ , where t is the sought time. After solving the equation we get that t is 5; </h3><h3> </h3><h3></h3><h3></h3>

3 0

1 year ago