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3 years ago

Analyze how some insects are able to move around on the surface of a lake or pond

1 answer:

3 0

It is called surface tension it is the elastic personality of some liquids as they pull together to take up as little surface area as possible. the water molecules would rather stay together than be pulled apart

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Both the lens and the cornea of the eye have a primary function of

3241004551 [841]

Answer: B. bending light

Explanation:

The phenomenom of vision in human eye is thanks to refraction (when light changes its direction as it passes through one medium to another), and this is what the cornea and the lens do.

When the ray of light encounters the eye, the first thing it finds is the cornea, which bends this ray and begins to form an image, then light passes through the pupil, which is in charge of regulating the amount of light that enters in the eye.

After light travels through pupil it passes through the lens, where the rays of light change the direction again in order to focus the formed image on the retina.

At this point it is important to note the formed image is downward, then the retina transforms light into electrical impulses that are sent to the brain through the optic nerve and finally the brain interprets these messages, and forms a right upward image.

In the image attached these parts can be seen.

6 0

3 years ago

During a hard stop, a car and its passengers slow down with an acceleration of 8,0m/s^2. What magnitude force does a 50-kg passe

arlik [135]

Answer:

F = 400 N

Explanation:

Given,

The acceleration of the car, a = 8 m/s²

The mass of the passenger, m = 50 Kg

The force acting on a body is equal to the product of the mass and its acceleration

F = m x a newtons

Substituting the given values in the above equation,

F = 50 Kg x 8 m/s²

= 400 N

Hence, the force exerted by the person on the seat belt is, F = 400 N

7 0

3 years ago

Which figure represents the electric field lines of two positive point charges?

Naddik [55]

Electric field lines of positive charges are always radially outwards

So here all field lines must have tendency to move out radially as well as two field lines never intersects with each other

So here field lines also do not intersects with each other

So overall the figure C is perfectly representing the field lines of two positive charges as these lines are not intersecting and also originating from two positive charges.

So answer must be

FIGURE C

7 0

3 years ago

At a drag race, the light turns green and 0.00125 hours later, a dragster is traveling 300 miles per hour. Calculate the acceler

Talja [164]

Answer:

240000 mph² or miles/hour²

Explanation:

Use the formula

<h3>acceleration = change in velocity ÷ time</h3>

change in velocity = 300 mph - 0 mph (final velocity - intial velocity)

time = 0.00125 hours

Substitute the values into the formula:

acceleration = 300 ÷ 0.00125 = 240000 mph²

4 0

3 years ago

Two plane mirrors stand facing each other, 3.08 m apart, and a woman stands between them. The woman faces one of the mirrors fro

Svetllana [295]

Answer:

A) 1.3m

B) it shows the back of her hand

C) 4.86m

D) it shows the palm of her hand

E) 7.46m

F) it shows the back of her hand.

Explanation:

Detailed explanation is shown in the illustrative diagram below.

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3 years ago

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