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3 years ago

What determines the type of the image formed after refraction from a convex lens?

2 answers:

6 0

Type of image is either real or virtual.

Real images (convex)
-light rays travel to a real image from the object

Virtual images (concave)
-not really there and no light reaches them

d. type of light source

**just an opinion, i might be incorrect

Leni [432]3 years ago

6 0

Answer:

Position of the object

Explanation:

What determines the type of image formed by an object in front of a convex lens is the position of the object from the lens. The nature of image formed is determined by the position of the object placed on the principal axis from the lens. As the object is moving closer to the mirror, the nature if the image formed by the object gets magnified. For example, the nature of image formed by an object on the focus will be different from the nature of image formed by an object placed between the focus and the optical center.

When object is positioned on the principal focus of the lens, the image formed will be at infinity, while that positioned between focus and optical center will produce a magnified, erect and virtual image.

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A annoying small child is dropped off a 16.0 m cliff (for complaining about homework). The

belka [17]

Answer:

i would be that annoying child lol

Explanation:

but i just needed this for points sorry :>

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3 years ago

An object is taken from an oven at 350o F and left to cool in a room at 70o F. If the temperature fell to 250o F in one hour, wh

Oksana_A [137]

Answer:

117.83° F

Explanation:

Using Newton's Law of Cooling which can be expressed as:

$\dfrac{dT}{dt}= k(T-T_1)$

The differential equation can be computed as:

$\dfrac{dT}{dt}= k(T-70)$

$\dfrac{dT}{(T-70)}= kdt$

$\int \dfrac{dT}{(T-70)}= \int kdt$

$In|T-70| = kt +C$

$T- 70 = e^{kt+C} \\ \\ T = 70+e^{kt+C} \\ \\ T = 70 + C_1e^{kt} --- (1)$

where;

$C_1 = e^C$

At the initial condition, T(0)= 350

$350 = 70 C_1^{k*0}$

$350 -70 = C_1$

$280 = C_1$

replacing $C_1$ = 280 into (1)

Hence, the differential equation becomes:

$T(t) = 70 + 280 e^{kt}$

when;

time (t) = 1 hour

T(1) = 250

Since;

$250 = 70 + 280 e^{k*1}$

$180 = 280e^k \\ \\ \dfrac{180}{280}= e^k$

$k = In (\dfrac{180}{280})$

k = -0.4418

Therefore;

T(t) = 70 + 280e^{(-0.4418)}t

After 4 hours, the temperature is:

T(t) = 70 + 280e^{(-0.4418)}4

T(4) = 117.83° F

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3 years ago

An RV is traveling 60 km/h along a highway. A boy sitting near the driver of the RV throws a ball to another boy at the back end

alina1380 [7]

Answer:

Speed of the ball relative to the boys: 25 km/h

Speed of the ball relative to a stationary observer: 35 km/h

Explanation:

The RV is travelling at a velocity of

$v_{RV}=+60 km/h$

Here we have taken the direction of motion of the RV as positive direction.

The boy sitting near the driver throws the ball back with speed of 25 km/h, so the velocity of the ball in the reference frame of the RV is

$v_B = -25 km/h$

with negative sign since it is travelling in the opposite direction relative to the RV. Therefore, this is the velocity measured by every observer in the reference frame of the RV: so the speed measured by the boys is

v = 25 km/h

Instead, a stationary observer outside the RV measures a velocity of the ball given by the algebraic sum of the two velocities:

v = +60 km/h + (-25 km/h) = +35 km/h

So, he/she measures a speed of 35 km/h.

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3 years ago

You observe the moon rising at 6 p.m., around sunset. its phase is

sammy [17]

I think it’s the Full Moon

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3 years ago

If you want to check on what conditions were like in the universe a few hundred thousand years after the Big Bang, what sort of

Klio2033 [76]

Big Bang, what sort of instrument would it be best to use: gravity.

The force of attraction between any two objects in the universe is known as gravity or gravitational force.

The mass of the object and the square of the distance between them determine the force of attraction. The weakest known force in nature, it is by far. There are only two factors that matter when discussing the gravitational force between two objects: mass and distance.

The square of the distance between two things has an inverse relationship with the force of gravity, which depends directly on the masses of the two items. The best theories of string theory propose that gravity is so weak because, in contrast to other forces, it may enter and exit these extra dimensions. We only get to taste a tiny bit of gravity's tremendous power.

Learn more about gravity herebrainly.com/question/10470988

#SPJ4.

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2 years ago