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4 years ago

At the focal point of a converging lens, the object:

Physics

2 answers:

rewona [7]4 years ago

8 0

Answer:

D) Image cannot be seen

Explanation:

As we know by lens formula

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

now we know that

object is placed at the focal point of lens

$d_o = f$

so we will have

$\frac{1}{d_i} = 0$

so the image will form at infinite

so image will be at infinite distance from the lens

so it cannot be seen

Nikitich [7]4 years ago

7 0

Answer:

D. cannot be seen

Explanation:

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It is always a good idea to get some sense of the "size" of units. For example, the mass of an apple is about 100 g , whereas a

marta [7]

Answer and Explanation:

The estimation of the mass of the objects is as follows

Given that

The mass of an apple is about 100 g

Just like that, we do some estimation of different objects

A dime is around 1 g

A smartphone is about 100 g

An adult male is approx 100 kg

A college physics textbook is around 1 kg

A ripe banana is around 100 g

A small car is around 1,000 kg

4 0

3 years ago

Suppose the collision between the packages is perfectly elastic. To what height does the package of mass m rebound?

Hitman42 [59]

The height, h to which the package of mass m bounces to depends on its initial velocity, v and the acceleration due to gravity, g and is given below:

$h = \frac{v^{2}}{2g}$

<h3>What are perfectly elastic collision?</h3>

Perfectly elastic collisions are collisions in which the momentum as well as the energy of the colliding bodies is conserved.

In perfectly elastic collisions, the sum of momentum before collision is equal to the momentum after collision.

Also, the sum of kinetic energy before collision is equal to the sum of kinetic energy after collision.

Since some of the Kinetic energy is converted to potential energy of the body;

$\frac{mv^{2}}{2} = mgh$

$h = \frac{v^{2}}{2g}$

Therefore, the height to which the package m bounces to depends on its initial velocity and the acceleration due to gravity.

Learn more about elastic collisions at: brainly.com/question/7694106

7 0

2 years ago

Which is an example of potential energy? Question 9 options: an electric current lighting a light bulb releasing the strings on

Feliz [49]

The pulled back string on an archer’s bow.

4 0

3 years ago

An oak block had the following dimension, 2 cm by 2 cm and 5 cm in height. A copper block had the same dimensions. The copper bl

antiseptic1488 [7]

Answer:

ρ_body = 1000 kg / m³

Explanation:

This is an exercise in fluid mechanics, specifically we must use the Archimedean principle, which states that the thrust is equal to the weight of the dislodged liquid.

In this case let's start by finding the volume of our body

oak block

v = l to h

v = 0.02 0.02 0.05

V = 2 10⁻⁵ m³

cooper block indicate that it has the same dimensions so its volume is the same, the total volume of the body is

V_total = 4 10⁻⁵ m³

as they indicate that the body is fully submerged there is a balance between weight and thrust

B - W = 0

the push is

B = ρ_fluid g V_total

the body weight is

ρ_body = M / V_total

M = ρ_body V_total

W = Mg

W = ρ_body V_total g

we substitute

ρ_fluid g V_total = ρ_body V_total g

ρ_body = ρ_fluid

in this case the body is in equilibrium in the fluid, in case the density of the body is greater than that of the fluid, the body sinks

Therefore the average density is equal to the density of the fluid, since since it is water the density is

ρ_body = 1000 kg / m³

8 0

3 years ago

This picture clicked by me<br>How's it

galben [10]

Answer:

Hey dear

U are a Nice photographer

The pic I awesome.

8 0

3 years ago

Read 2 more answers