Pls answer this quastion
A ____________ is the smallest functional and structural unit of all living organisms.

An ___________ is any living thing that carries out its own life processes.

____________ was the first to describe cells. He looked at the bark of a cork tree under a microscope.

Why are most cells small?
Cells are small because their size is __________ by their outer barrier.
As the cell grows, they will require _______ nutrients and produce ______ waste products.
If cells get too large, they cannot take in ________ nutrients or get rid of enough wastes.
The __________to _________ ratio of a cell is the ratio of the outer surface to the cell’s volume.
The ________ the cell, the ________ this ratio.

What is cell theory?
The cell theory lists three basic characteristics of all cells and organisms.
________________________________________________________
________________________________________________________
________________________________________________________

Notable scientists:
Robert Hooke was the first to describe cells. He looked at the bark of a cork tree under a microscope.
_____________________ was the first to describe living cells.
_____________________ concluded that all plants are made of cells
_____________________ determined that all animal tissues are made of cells
_____________________ proposed that cells could form only from the division of other cells
Which theory does this fall under? ______

______________ organisms
Multicellular organisms
Made up of one cell
Made up of _____ than one cell
The single cell must carry out all life functions
These organism have _____________ cell functions

Describe the differences between the two types of cells.


Prokaryotes
Eukaryotes
_____________________
_____________________
_____________________
DNA is found in the __________________
_____________________
_____________________
_____________________
DNA is found in the _____________________

The ball dropped of a cliff will have a final velocity of 19.6 m/s at 2s

The free fall formula and the procedure we will use is:

fv = g* t

Where:

Information of the problem:

Applying final velocity formula we get:

fv = g* t

fv = 9.8 m/s² * 2 s

fv = 19.6 m/s

It is when the object or mobile falls from a height (h) with a positive acceleration equal to the gravity, describing a vertical rectilinear travel.

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Answer:

\(\theta_2 = 34.61^0\)

Explanation:

Path difference for the destructive interference of a single slit:

\(D sin \theta = n \lambda\)

For the first - order minimum, n = 1, and \(\theta = \theta_1\)

\(D sin \theta_1 = \lambda\).........(1)

For the second - order minimum, n = 2,  and \(\theta = \theta_2\)

\(D sin \theta_2 = 2 \lambda\).........(2)

Dividing equation (2) by equation (1):

\(\frac{D sin \theta_2}{Dsin \theta_1} = \frac{2 \lambda}{\lambda} \\\frac{ sin \theta_2}{sin \theta_1} = 2 \\\theta_1 = 16.5^0\\\frac{ sin \theta_2}{sin 16.5} = 2\\sin \theta_2 = 2 sin 16.5\\sin \theta_2 = 0.568\\\theta_2 = sin^{-1} 0.568\\\theta_2 = 34.61^0\)

The angle of refraction in the water is approximately 51.7 degrees. To calculate the angle of refraction in the water, we can use Snell's Law, which states that the ratio of the sines of the angles of incidence and refraction  equivalent to the ratio of the refraction indices of the two mediums.

sin(theta1)/sin(theta2) = index of refraction of air/index of refraction of water

Plugging in the given values, we get:

sin(75.0°)/sin(theta2) = 1/1.33

Rearranging and solving for the refraction angle, we get:

sin(theta2) = sin(75.0°) × 1.33

sin(theta2) = 1.225

Taking the inverse sine both sides of equation, we get:

refraction angle = sin^-1(1.225)

refraction angle ≈ 51.7°

Therefore, the angle of refraction in the water is approximately 51.7 degrees.

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(b) negative charge

This is the answer

Answer:

1.25m/s

Explanation:

Velocity is defined as the change of displacement with respect to time. Mathematically, velocity = displacement/time

Given displacement = 3km and time = 40minutes

Converting km to meters and minuetes to seconds;

Since 1 km = 1000m

3 km = (3*1000)m

3 km = 3000m

Also 1minute = 60seconds

40 minutes = 60*40 = 2400seconds

velocity = displacement/time

Velocity (in m/s) = 3000/2400

Velocity (in m/s) = 30/24

Velocity (in m/s) = 5/4

Velocity (in m/s) = 1.25m/s

Hence, the average velocity of he hiker is 1.25m/s

Answer: ionic bond

Explanation: This type of chemical bond is called an ionic bond because the bond formed between two ions of opposite charge.

The area of the shaded region is 4621.5 cm2 - 1083.8 cm2 = 3537.7 cm.

Area is the space or size of a two-dimensional surface or shape. It is a measure of the size of a surface and is typically expressed in square units, such as square feet or square meters. Area is usually calculated by multiplying the length of a shape by its width. For example, the area of a rectangle with a length of 4 feet and a width of 3 feet is 12 square feet. Area can also be calculated for shapes with curved sides such as circles, triangles, and other polygons.

The shaded region is the area between the two circles. To calculate the area of the shaded region, we need to subtract the area of the inner circle from the area of the outer circle.

The area of the outer circle can be calculated using the formula A = πr2, where r is the radius of the circle. Since the two circles have the same center, the radius of the outer circle is twice the radius of the inner circle.

Therefore, the radius of the outer circle is 2 × (117.436/2π) = 38.212 cm.

The area of the outer circle is A = π × 38.212^2 = 4621.5 cm2.

The area of the inner circle can be calculated using the same formula: A = πr2. The radius of the inner circle is (117.436/2π) = 18.606 cm.

The area of the inner circle is A = π × 18.606^2 = 1083.8 cm2.

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Wave speed decreases by half while the frequency remains constant.

                           \(\begin{aligned}\\\small v_1 &=\small f.\lambda_1\quad\cdots\cdots(1)\\\\\small v_2 &=\small f.\frac{\lambda_1}{2}\quad\cdots\cdots(2)\\\\(2)\div&(1)\\\\\small v_2 &=\small \frac{v_1}{2}\end{aligned}\)

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The position of the image of the 4.00 mm-tall object, measured from the center of the silvered spherical glass Christmas tree ornament with a diameter of 6.30 cm, is -16.2 cm. The height of the image is -3.84 mm.

Height of object (h₁) = 4.00 mm = 4.00 × 10⁻³ m

Distance of object from center of ornament (u) = 22.5 cm = 22.5 × 10⁻² m

Diameter of ornament (d) = 6.30 cm = 6.30 × 10⁻² m

Since the ornament is silvered, it forms a virtual, erect and diminished image due to reflection.

Using the mirror formula:

1/f = 1/u + 1/v

where f is the focal length of the mirror and v is the distance of the image from the mirror.

The focal length of the mirror can be found using the formula:

f = -R/2

where R is the radius of curvature of the mirror, which is half of the diameter of the ornament.

Substituting the given values:

R = d/2 = 6.30 × 10⁻²/2 = 3.15 × 10⁻² m

f = -R/2 = -3.15 × 10⁻²/2 = -1.575 × 10⁻² m

Now, substituting the values of u and f in the mirror formula:

1/-1.575 × 10⁻² = 1/22.5 × 10⁻² + 1/v

Solving for v, we get:

v = -16.2 × 10⁻² m

The negative sign indicates that the image is formed on the same side as the object, which is virtual.

The height of the image (h₂) can be found using the magnification formula:

h₂/h₁ = -v/u

Substituting the given values:

h₂/4.00 × 10⁻³ = -(-16.2 × 10⁻²)/22.5 × 10⁻²

Solving for h₂, we get:

h₂ = -3.84 × 10⁻³ m

The negative sign indicates that the image is diminished compared to the object.

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The  correct  processes based on the type of energy transfer they involve can be linked as ;

Conduction, radiation, and convection are the three different ways that thermal energy is transferred. Only fluids experience the cyclical process of convection.

The total amount of energy in the universe has never changed and will never change because it cannot be created or destroyed.

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To react completely with 0.500 L of volume of 0.500 M Na2CO3, you would need 0.250 L of 2.00 M HCl.

Write down the balanced chemical equation for the reaction between HCl and Na2CO3:

2 HCl + Na2CO3 → 2 NaCl + H2O + CO2

Determine the stoichiometry of the reaction:

From the balanced equation, we can see that 2 moles of HCl react with 1 mole of Na2CO3.

Calculate the number of moles of Na2CO3:

Given that the volume of Na2CO3 solution is 0.500 L and the concentration is 0.500 M, we can use the formula:

Moles = Concentration × Volume

Moles of Na2CO3 = 0.500 M × 0.500 L = 0.250 moles

Use the stoichiometry to determine the number of moles of HCl needed:

According to the stoichiometry of the balanced equation, 1 mole of Na2CO3 reacts with 2 moles of HCl.

Therefore, to react with 0.250 moles of Na2CO3, we would need 2 × 0.250 = 0.500 moles of HCl.

Convert moles of HCl to volume:

Given that the concentration of HCl is 2.00 M, we can use the formula:

Volume = Moles / Concentration

Volume of HCl = 0.500 moles / 2.00 M = 0.250 L

Convert the volume to liters:

The final answer is 0.250 liters of 2.00 M HCl are needed to react completely with 0.500 L of 0.500 M Na2CO3.

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The can be obtained by using the balanced chemical equation: Na2CO3 + 2 HCl → 2 NaCl + H2O + CO2  Write the balanced chemical equation for the reaction.

Na2CO3 + 2 HCl → 2 NaCl + H2O + CO2

Calculate the number of moles of Na2CO3. Using the formula n = c × V, where n is the number of moles, c is the concentration, and V is the volume, we get:

n = c × V

= 0.500 M × 0.500 L

= 0.250 mol

Calculate the number of moles of HCl required.The balanced chemical equation shows that 2 moles of HCl react with 1 mole of Na2CO3. Hence, the number of moles of HCl required can be calculated as follows

:n(HCl) = 2 × n(Na2CO3)

= 2 × 0.250 mol

= 0.500 mol

Calculate the volume of 2.00 M HCl required.The number of moles of HCl required is 0.500 mol. Using the formula V = n/c, where V is the volume, n is the number of moles, and c is the concentration, we get:

V = n/c

= 0.500 mol ÷ 2.00 M

= 0.250 L

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Answer:

The answer is high

Explanation:

I just took the test :))

Higher frequency and higher pitch are produced by sounds with shorter wavelengths. So, long waves sound low and short waves sound high.

Physical characteristics of waves, such as transmission, reflection, polarization, diffraction, and refraction, are examples of wave attributes.

Waves are described mathematically using terms like wavelength, frequency, and amplitude.

Sound and light are two examples of common waves we encounter. Whether you're discussing waves or vibrations.

All of them may be classified according to the following four factors: amplitude, wavelength, frequency, and speed.

According to the graph, pitch perception is influenced by tone strength; below 1000 Hz, pitch tends to decrease with increasing loudness, and beyond 1000 Hz, pitch tends to increase.

Therefore, high pitch that is heard when waves are closely spaced together.

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Answer:

its A

Explanation:

Just took the exam

Answer:

a

Explanation:

Answer:

understand Newton's second law of motion,F is equal to ma where F is the force ,m is the mass of the object,a is acceleration

The demand for a necessity such as electricity tends to be inelastic. Here's why:Inelastic demand is when changes in price don't affect the quantity demanded as much.

Necessities such as food, water, and electricity often have an inelastic demand, meaning that when the price of the product increases, the quantity demanded does not decrease as much.Explanation:For example, if the cost of electricity increased by 10%, a household might not be able to decrease its use of electricity as much, such as by 10%. The amount of electricity that a household uses might not be affected by price changes because it's a necessity.A vertical demand curve implies that a change in price results in no change in quantity demanded.

Unit elastic refers to a change in price that results in a proportional change in quantity demanded.D elastic refers to the degree of price sensitivity. Demand is said to be elastic when a price change causes a substantial change in demand.

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Answer:

The Venusian atmosphere supports opaque clouds of sulfuric acid, making optical Earth-based and orbital observation of the surface impossible. Information about the topography has been obtained exclusively by radar imaging. Aside from carbon dioxide, the other main component is nitrogen

Explanation:

Because Venus has such a dense atmosphere which is some 100 times thicker than the earth's. Evidently, Venus is sufficiently close to the Sun that the little carbon dioxide it had in its early, Earth-like atmosphere caused the surface to warm up and leach out more carbon dioxide into the atmosphere.

Answer:

A

Explanation:

earthquakes release energy

Answer:

i think it begins at the epicenter

Explanation:

i can remember

pls give brainleist

The correct statement about speed limits in North Carolina is: both A and B.

In North Carolina, unless otherwise posted, the speed limit inside a city is 35 mph (statement A), and the speed limit for a school activity bus is 25 mph (statement B). Therefore, both statements A and B are correct. In North Carolina, the default speed limit for urban areas, unless otherwise indicated by posted signs, is 35 mph. This helps ensure safe driving in city environments where there are more pedestrians, intersections, and potential hazards. Similarly, the speed limit for school activity buses, unless otherwise posted, is set at 25 mph to prioritize the safety of students and accommodate the slower speed needed for frequent stops and potential loading/unloading situations. Overall, both statements A and B accurately describe the speed limits in North Carolina, indicating that the speed inside a city is 35 mph and the speed limit for a school activity bus is 25 mph.

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Answer:

F=Gxy/r^2

Explanation:

F=Gm1m2/d^2

F=Gxy/r^2

Answer:

b

Explanation:

a Chevy camera engine exerts 650 hp to move the car. then  4.8 × 10⁵ Watt.of power does the engine exert .

Power is the rate of doing work. Power is also defined as work divided by time. i.e. Power = Work ÷ Time. Its SI unit is Watt denoted by letter W. Watt(W) means J/s or J.s-1. Something makes work in less time, it means it has more power. Work is Force times Displacement. Dimension of Power is [M¹ L² T⁻³].

Just multiply the horsepower with 745.7 that will convert into watt.

Watt =  650 hp × 745.7  = 4.8 × 10⁵ watt.

a Chevy camera engine exerts 650 hp to move the car. then  4.8 × 10⁵ Watt.of power does the engine exert.

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Answer:

1

Explanation: that is the ratio

(105 N/m) x (0.1 m)  =  10.5 Newtons.

Answer:

(105 N/m) x (0.1 m) = 10.5 Newtons.

Explanation:

apex quiz

Answer:

hgeusugusuisdgfisyhdfygsdyfiusdgoWEGBDSFGVSI

Explanation:

Si

Explanation:

6x+12=48

6x=48-12

6x=36

x=6

Answer:

b. able to travel through a vacuum.

Explanation:

The most distinguishing factor of an electromagnetic waves is that they are able to travel through a vacuum.

These waves do not require materials in a medium for propagation.

The charge q2 is negative, since it's attracted to the positive charge q1. The value of q2​, with its sign, is -3.05 μC.

Two particles that have charges of q1​ and q2​ are separated by a distance of 0.25 m, and particle 1 experiences an attractive force of 4.7 N. The charge q1​ is +3.4μC. The force between two charged particles is given by Coulomb's Law.

In this case, the force between the two particles is given by:F=k(q1q2)/r²where F is the force, q1 and q2 are the charges of the two particles, r is the distance between the particles, and k is the Coulomb's constant which has a value of 9 × 10⁹ N⋅m²/C².Substituting the given values in the formula:F = k(q1q2)/r² 4.7 = (9 × 10⁹) (3.4 × 10⁻⁶) q2 / (0.25)²Solving for q2 gives: q2 = (4.7 × 0.25² × 10⁻²) / (9 × 10⁹ × 3.4 × 10⁻⁶) q2 = 3.05 × 10⁻⁶ C

The sign of q2​ can be determined by noting that the force experienced by particle 1 is attractive. The force between two particles of opposite charges is attractive, while that between two particles of like charges is repulsive. Therefore, the charge q2 is negative, since it's attracted to the positive charge q1. The value of q2​, with its sign, is -3.05 μC.

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During the first year of life, babies go through a series of developmental milestones in terms of sounds and gestures. Here is the order of the sequence, beginning with the earliest form at the top:1. Crying: Crying is one of the first forms of communication that babies use to express their needs or discomfort.

It is a natural instinct and serves as a way to get attention and assistance from caregivers.2. Cooing: Around 2 to 3 months, babies begin to produce cooing sounds. These are soft, vowel-like sounds that babies make when they are content and happy. It is an early attempt at vocalization.

3. Babbling: Between 6 to 8 months, babies start babbling. This is when they produce repetitive syllables such as "ba-ba" or "da-da." It is an important step in language development and helps babies practice using their vocal cords.
4. Gesturing: By around 9 to 12 months, babies start to use gestures to communicate. This includes waving goodbye, pointing at objects, or reaching out to be picked up. These gestures are their way of expressing their desires and interacting with their environment.

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If a cool dry day was followed by a warm humid day, you might expect they resulted from which of the following consecutive air masses is continental polar followed by maritime tropical.

What is warm humid day?

A location with a hot-humid climate is generally thought to have more than 20 inches (50 cm) of annual precipitation and one or both of the following conditions: a wet bulb temperature of 67°F (19.5°C) or greater for 3,000 or more hours over the warmest six months of the year.

The practical integrator is also called as lossy integrator as it integrates only frequencies greater than fa (i.e. higher frequencies) effectively. Thus we can have following observations from frequency response of practical integrator

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