True or false? Cells in the retina are photo-sensitive.

Answers

Answer 1

Answer:

Answer:

True

Explanation:

Cells in the retina are indeed photosensitive. The retina is a layer of tissue located at the back of the eye that contains specialized cells called photoreceptors. Photoreceptors are responsible for detecting and responding to light stimuli, converting them into electrical signals that can be transmitted to the brain for visual processing. There are two main types of photoreceptor cells in the retina: rods and cones. Rod cells are highly sensitive to light and are responsible for vision in low-light conditions, while cone cells are responsible for color vision and visual acuity in bright light. Both rods and cones play crucial roles in the visual perception process and are essential for our ability to see.

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Find the perimeter of the rectangle if each block represents one foot(show your calculation)

Answers

I'm pretty sure that the "block" of which you speak is one in a pattern
of them that covers the drawing you have of the rectangle, and now
I need to explain something to you:

The REASON for printing that drawing next to the question that you
partially copied is that the drawing has information that's needed to
answer the question with, and rather than repeat all that information
in the question, it just says "LOOK AT THE DRAWING !"

In fact, the whole point of the question may not be just to remind you of
what "perimeter" means. It's more likely that the purpose of this problem
is to make you pick the information you need off of a drawing.

Either way, if you'll kind of "read between the lines" of the part of the
question that you DID copy, it should be pretty obvious to you that nobody's
going nowhere in the direction of a solution without SEEing the drawing.

So my bottom-line conclusion regarding a solution for this problem is:
Not possible with the given information.

A solid aluminum cube has sides each of length L . A second cube of the same material has sides four times the length of the first cube; i.e., 4 L . Compared to the first cube, the total surface area of the second cube is 1. twenty-seven times the first cube. 2. sixteen times the first cube. 3. sixty-four times the first cube. 4. eight times the first cube. 5. twenty-four times the first cube. 6. two times the first cube

Answers

Answer:

Option (2): Sixteen times the first cube

Explanation:

$Surface \: Area \: of \: Cube = 6 {a}^(2)$

$(T.S.A \: of \: larger \: cube)/(T.S.A \: of \: smaller \: cube) = \frac{6 * 16 {l}^(2) }{6 * {l}^(2) } = 16$

When the linear dimensions of a solid are multiplied by ' R ', the surface area of all or any part of it increases by R² , and the volume of all or any part of it increases by R³ .

If the sides of the second cube are 4 times the sides of the first one, then the second cube has (4²) = sixteen times the surface area of the first one (2), and it has (4³) = 64 times the volume of the first one.

The _____ theory is the most accepted theory regarding the origin of the solar system. It suggests that our star, the Sun, was first created by a cloud of dust and gas. nebular condensation big bang steady state

Answers

The answer is the big bang witch goes as follows

The Big Bang model is that the universe begun in an extremely dense and hot condition and has expanded. The theory suggests, and measurements show, that the universe is still expanding today.

The Big Bang is a scientific theory about how the universe started, and then made the stars and galaxies we see today.

The universe began as a very hot, small, and dense superforce (the mix of the four fundamental forces), with no stars, atoms, form, or structure (called a "singularity"). Then about 13.8 billion years ago,[1] space expanded very quickly (thus the name "Big Bang"). This started the formation of atoms, which eventually led to the formation of stars and galaxies. It was Georges Lemaître who first noted (in 1927) that an expanding universe could be traced back in time to an originating single point. The universe is still expanding today, and getting colder as well.

As a whole, the universe is growing and the temperature is falling as time passes. Cosmology is the study of how the universe began and its development. Scientists who study cosmology agree that the Big Bang theory matches what they have observed so far. although there are flaws in this theory such as where did the explosion come from and even if u could find a way to explain the creation of the explosion itself there is the tiny fact that u cant create something from nothing however there would be starting material in this theory it wouldn't simply create more and since the theory states that the world will grow infinitely this is impossible but as i said it is a theory and the most accepted at that

Advantages and disadvantages of nuclear energy

Answers

Answer:

Nuclear energy has some advantages over traditional methods of producing electricity. It has little impact on air quality and is more efficient than traditional methods of producing electricity. It does, however, use a nonrenewable resource, uranium. Uranium must be mined just like coal, which does have detrimental effects on the environment. Nuclear power plants also produce radioactive waste, which leads to difficulties in storage. Also, nuclear power plants use large amounts of water and can contribute to thermal pollution.

Advantages
Incredibly efficient
emmisionless
high energy density

Disadvantages
Non renewable
potential safety hazard
decomissioning of plants and disposal of nuclear waste is expensive and time consuming

In the winter activity of tubing, riders slide down snow covered slopes while sitting on large inflated rubber tubes. To get to the top of the slope, a rider and his tube, with a total mass of 80 kg, are pulled at a constant speed by a tow rope that maintains a constant tension of 360 N. How much thermal energy is created in the slope and the tube during the ascent of a 30-m-high, 120-m-long slope?

Answers

The amount of thermal energy that is created in the slope and the tube during the ascent is 19680 Joules.

Given the following data:

Total mass = 80 kg

Tension = 360 Newton

Height = 30 meters

Displacement = 120 meters

To find the amount of thermal energy that is created in the slope and the tube during the ascent:

By applying the Law of Conservation of Energy:

$Work\;done = K.E + P.E + T.E$

Where:

K.E is the kinetic energy.

P.E is the potential energy.

T.E is the thermal energy.

Since the rider and his tube are pulled at a constant speed, K.E is equal to zero (0).

Therefore, the formula now becomes:

$Work\;done = 0 + P.E + T.E\n\nT.E = Work\;done-P.E$

For the work done:

$Work\;done = Tensional\;force * displacement\n\nWork\;done = 360 * 120$

Work done = 43,200 Joules.

For P.E:

$P.E = mgh\n\nP.E = 80*9.8*30$

P.E = 23,520 Joules.

Now, we can find the amount of thermal energy:

$T.E = Work\;done-P.E\n\nT.E =43200-23520$

T.E = 19680 Joules.

Answer:

$E_(th) = 19680 J$

Explanation:

GIVEN DATA:

Total mass ( rider + his tube) = 80 kg

tension Force = 360 N

height of slope = 30 m

length of slope = 120 m

we know that thermal energy is given as

E_{th} = W- Ug

W= F*d = (360N*120m)= 43200 J

Ug= m*g*h = (80kg*9.8m/s2*30m) = 23520 J

$E_(th) = 43200J - 23520 J$

$E_(th) = 19680 J$

According to the law of conservation of mass, in a chemical reaction, the mass of the reactant will always be different from the mass of the product.

Answers

That is not true.

According to the law of conservation of mass, in a chemical reaction, the mass of the reactants will always be the same as the mass of the products.

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