How far does a freely falling apple drop in 7.4 s after being released from rest?

4.6 ml of a 5.0 m solution of sodium borate must be added to a 200 ml solution of 50 mm boric acid in order for the ph to be 9.6. the pka of boric acid is 9.24.

Borax, also known as sodium hydrated borate, is an ionic molecule having the chemical formula Na2H20B4O17, also written as Na2B4O710H2O. It is a crystalline solid that has no color and dissolves in water to form a simple solution.

It is frequently sold in powder or granular form and has a wide range of industrial and domestic applications, including as a pesticide, metal soldering flux, ingredient in glass, enamel, and pottery glazes, tanning agent for skins and hides, artificially ageing agent for wood, pharmaceutic alkalizer, and pesticide.

It serves as a buffer in laboratories that work with chemicals.

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Answer:

c. prone; supine

Explanation:

The correct answer for the maginitude of the average velocity of the particle between t = 1.0 s and t = 4.0 s is 0.67 m/s .

The average velocity concept was used to solve this problem.First, use the figure to calculate the distance and time required.The average velocity is then calculated using the time interval and total displacement. Average velocity is a measure of displacement over time. This is also known as the average rate of change in position over time.

The average velocity is as follows:

The velocity is denoted by v = (v 2-v 1) / (t 2- t 1)

t 1 = 4 sec

t 2 = 1 sec

t2 - t1 = 4 seconds - 1 second = 3 seconds

x1 = 2 m

x 2 = 0 m

x 2- x1 = 2 m

The velocity formula is v = (x 2- x1) / (t2- t 1)

the answer = 0.67 m/s

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Answer:

because carbon 14 has only a short half life, rather than other elements with longer half lives.

Explanation:

✨science✨

A decrease in one's ability to hear high-pitched, high frequency sounds is known as high-frequency hearing loss.

The term hearing has to do with the ability to pick out sounds. It is the ability to comprehend the meaning of sounds which may be disconnected or coherent.

Hearing occurs both at low and high frequency. The loss of hearing depends on what area of the ear that has been affected. Thus, if the inner ear of a person has been affected, there is a decrease in one's ability to hear high-pitched, high frequency sounds which is known as high-frequency hearing loss.

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The mass of the object is 6 kg.

Any push or pull applied to an object is termed a force. In other words, force is defined as the product of the mass of the object and its acceleration. SI unit of force is Newton and that is denoted by the symbol N. Force is termed as a vector quantity because it has both magnitude and direction.

[tex]Force = Mass × Accleration [/tex]

[tex] F = m × a[/tex]

Acceleration is defined as the rate at which velocity changes an object over time.

Si unit of the acceleration is a meter per second square.

[tex]Accleration = \frac{Velocity}{ Time}[/tex]

[tex]a = \frac{v}{t} [/tex]

Acceleration = 6 m/s²

Force = 36 N

The mass of the object is,

[tex]F = m × a[/tex]

[tex]36 = m \times 6[/tex]

[tex]m = \frac{36}{6} [/tex]

[tex]m = 6 \: kg[/tex]

Therefore, the mass of the object is 6 kg.

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During the ball's flight up its velocity and acceleration vectors are in opposite direction and during the ball's flight down its velocity and acceleration vectors are in same direction.

Velocity vector is the rate of change of position of an object. Acceleration vector is the rate of change of velocity of an object.

Therefore, during the ball's flight up its velocity and acceleration vectors are in opposite direction and during the ball's flight down its velocity and acceleration vectors are in same direction.

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The mass of body which is accelerated by applying a force of 200n,that speed up it to 36 m/s^2 is 5.5 grams.

Given that,

Applied Force = 200n

Acceleration = 36m/s^2

Let,

consider a mass of the object = m

Now,

Formula used:

Force = mass / acceleration

F = m / a

m = f / a

m =  200/ 36

m = 5.5 gm

Therefore,

Mass of the  body will be 5.5 grams.

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The change in potential energy of this system is = 40 J.

The potential difference, often known as voltage, is equal to the amount of current times the resistance. One Joule, or one Volt, of energy is required for one Coulomb of charge to flow from one place in a circuit to another.

V=Uq The change in potential energy of a charge q transported from point A to point B, divided by the charge, is what is used to determine the electric potential difference between points A and B, or VBVA. The joules per coulomb unit of potential difference is called the volt (V).

This system's potential energy changed by 40 J.

Energy = charge * potential difference

=> Energy = (8v)*5

=> Energy = 40 J

The change in potential energy of this system is = 40 J.

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The initial velocity of the ball cannot be found only using the given information. Horizontal distance travelled is required to calculate the initial velocity and vice-versa.

In a horizontally launched projectile motion, the initial velocity is the velocity in x-direction which is constant throughout the motion. In y-direction the initial velocity is zero. Using the information given in y-direction, vertical distance can be found.

According to kinematic equations,

Δy = [tex]u_{oy}[/tex]t + 1 / 2 gt²

Δy = 0 + ( 1 / 2 ) * 9.8 * 3²

Δy = 44.1 m

For calculating factors in the x-direction,

[tex]V_{0x}[/tex] = [tex]d_{x}[/tex] / t

Without one of the missing factors, the other cannot be found.

Therefore, the initial velocity of the ball cannot be found only using the given information.

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One way to decide whether a sample of matter is a substance or a mixture is by either finding its boiling (liquid) or melting (solid) point.

A substance has a constant boiling/melting point whereas a mixture has different boiling/melting points.

A substance is an element or a compound that cannot be separated using physical or chemical properties. A mixture is made up of two or more compounds which can be separated using physical or chemical properties.

Therefore the easiest way to decide whether a sample of matter is a substance or a mixture is by either finding its boiling (liquid) or melting (solid) point. If after multiple test the result is same it is a substance and if it is different it is a mixture.

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The final speed is found to be 1.3 × 10⁻⁹ seconds.

Initial speed -226000 m/s

Acceleration - 4.0 x 1014 m/s2,

Speed - 781000 m/s

                    a = (v - u ) / t m/s²

As we have to find the time taken, the formula can be altered as,

t = v - u / a

where, t - time taken to reach a final speed

v - final velocity

u - initial velocity

a - acceleration.

Substituting all the given values,

[tex]t =\frac{781000 - 226000} {4* 1014}[/tex]

= 1.3875 × 10⁻⁹ seconds.

So, taken to reach the final speed is found to be 1.3 × 10⁻⁹ seconds.

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A hockey puck is set in motion across a frozen pond, if friction and air resistance are ignored, zero newton force is required to keep the puck sliding at constant velocity .

The force preventing solid surfaces, fluid layers, and sliding material components from moving in the same direction is known as friction. Friction between two surfaces causes kinetic energy to be converted into thermal energy when they move in relation to one another (that is, it converts work to heat). The utilization of friction produced by rubbing pieces of wood together to start a fire serves as an example of how this attribute can have dramatic effects. When a viscous fluid is agitated, for instance, kinetic energy is transformed into thermal energy. Wear, which can result in component damage or performance degradation, is another significant effect of various types of friction. Tribology is a field of study that includes friction.

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The output force of the given lever is determined as 32 Joules.

The output force of an object is the product of load or weight of an object being lifted and distance through which the load moves.

The output force of the given lever is calculated as follows;

Output force = Load x distance moved load

Output force = 8 N x 4 m

Output force = 32 Joules

Thus, the output force of the given lever is determined as 32 Joules.

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Isotopes share the same atomic number but differ in atomic mass because they have different numbers of neutrons.

Isotopes are two or more atom types that share the same atomic number (number of protons in their nuclei), location in the periodic table, and chemical element but have distinct nucleon numbers (mass numbers) as a result of having a different number of neutrons in their nuclei. The term isotope is derived from the Greek roots isos and topos, meaning "the same place," and refers to the fact that multiple isotopes of a single element occupy the same position on the periodic table, even though they have somewhat different atomic weights and physical properties.

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In traditional mass media, advertising is the paid media space that sponsors use to persuade audiences

Advertising is a form of communication aimed at publicizing a product or service in order to influence the public to purchase or use it.

This type of communication is paid and promoted by companies and media with a commercial purpose.

For example, a company specializing in designing and implementing ads for other company's products is an advertising company.

There are four types of advertising:

the communication is a process through which information is transmitted through the use of oral or written language.

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The integers can be arranged in the form of 10p - 1 such that p = 1-7 in the was as follows:

10p-1 = (10*1) - 1 = 9 = [tex]3^{2}[/tex] = 3x3

10p-1 = (10*2) - 1 = 19 = [tex]19^{1}[/tex]

10p-1 = (10*3) - 1 = 29 = [tex]29^{1}[/tex]

10p-1 = (10*4) - 1 = 39 = 3x13

10p-1 = (10*5) - 1 = 49 = [tex]7^{2}[/tex] = 7x7

10p-1 = (10*6) - 1 = 59 = [tex]59^{1}[/tex]

10p-1 = (10*7) - 1 = 69 = 3x23

Here we see that not all are in the form of 2^n x 5^m where n and m are non-negative integers.

As per the rule, if A =p/q be a rational number such that p and q are co-prime and the prime factorization of q is not in the form of 2^n x 5^m where n and m are non-negative integers, then A has a decimal expansion which is non-terminating recurring decimal.

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Answer:

its also difficult for me.

Answer:

A control variable is any factor you control or hold constant during an experiment and a negative control group is a control group that is not exposed to the experimental treatment or to any other treatment that is expected to have an effect

An artwork from The Book of Fixed Stars is seen in the figure.

A man is depicted in the drawing holding a sickle with his left hand and extending his right arm forth. The person is hunched over on his left knee, and above him is inscribed in Arabic calligraphy. There are dots all throughout the artwork with Arabic text that identify specific stars and their brightness as observed by Muslim astronomers.

The monarch of the Turkic Timurid dynasty, which ruled over a large portion of Central Asia in the fifteenth century, received this copy of The Book of Fixed Stars. Individual stars are represented by the dots spread throughout the picture, and the symbols next to the dots denote the stars' varying luminosities,  as observed by Muslim astronomers.

The greatest evidence that intellectual activities in the Muslim world persisted in the era between 1200 and 1450, despite the dissolution of the Abbasid Caliphate, is the sponsorship of scholarship by Turkic dynasties, such as the Timurids.

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The demand for widgets has a price elasticity of 0.5. If we assume no change in the demand curve for widgets, an increase in sales of 8 percent implies a(n) 32% reduction in price.

The basic formula for the price elasticity of demand coefficient is:

Percentage change in quantity being demanded/percentage change in the price

Demand elasticity the price elasticity of demand (PED) of a good is a measurement of how responsive the quantity demanded is to the price.

Almost all goods see a decrease in quantity demanded when prices rise, however certain goods experience this decrease more than others.

When a price increases by 1% while all other factors remain constant, the price elasticity provides the percentage change in the quantity required. If the elasticity is 2, a 1% increase in price results in a 2% decrease in the amount demanded.

Other elasticities gauge how changes in other factors affect the quantity needed (e.g., the income elasticity of demand for consumer income changes).

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The time of fall for the two balloons is equal.

Here the conditions given resembles a free fall. Since the air resistance is negligible, gravitational force is the only force acting on both the balloons which means the two balloons are falling in a vacuum. In a vacuum, if two objects of different mass are thrown from the same height, both objects will reach the ground at the same time.

Free fall is nothing but a condition in which an object falls solely under the influence of gravity.

Therefore, the time of fall for both yellow and red water balloons is equal no matter the weight where air resistance is negligible.

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Answer:

atomic number

Explanation:

In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).

*in the question you have written fives i think it has to be gives .*

please make my answer as brainelist

The fusion of hydrogen nuclei in stars produced all of the helium in the Universe.

However, most stars undergo an internal transformation after turning a considerable percentage of their hydrogen to helium. The interior core compresses and warms up until it is hot enough to fuse helium into bigger atoms, for as by fusing three helium atoms into carbon. At the same time, some helium will combine with the carbon to generate oxygen. Outside the core, in what is known as the envelope, there is still enough hydrogen to fuse into additional helium. However, the center starts fusing heavier nuclei. This, by the way, is the transition from a 'regular' star like our Sun to a Red Giant.

After the red giant phase, the Sun will shed its outer layers, leaving behind a helium-rich core that will gradually cool throughout the course of the Universe. After the red giant phase with stars more massive than the Sun, it becomes practically a free for all for producing heavier and heavier atoms. When the helium in the core runs out, the star collapses again, heats up, and begins fusing carbon and oxygen into bigger atoms. If the star is large enough, this will continue until iron is fused. At such time, a hotter core will still not result in fusion. The star falls, becomes unstable, and explodes, resulting in supernovae and neutron stars (or black hole).

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The seal's average velocity during the chase is 1.67 m/s.

The seal's average speed during the chase is 5 m/s.

The average velocity of an object is the change in the displacement of the object with time.

The seal's average velocity during the chase is calculated as follows;

Δx = xf - xi

Δx = 20 m - 10 m = 10 m

v = Δx/t

v = 10 m / 6 s

v = 1.67 m/s

The average speed is the ratio of total distance to total time of motion.

v = (10 m + 20 m) / 6 s

v = 30 m / 6s

v = 5 m/s

Thus, the seal's average velocity during the chase is 1.67 m/s.

The seal's average speed during the chase is 5 m/s.

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As shown in the figure below, a seal and shark are playing a fun game of tag. The seal swims leftward 10 m then dodges rightwards another 20 m. The seal swims a total time of 6 s.

Answer:

What is the seal's average velocity during the chase?

Answer: 1.67 m/s

What is the seal's average speed during the chase?

Answer: 5  m/s

The speed of water at the end of spillway is 57.7 (m/s)

Calculation:

According to the Bernoulli equation:

P/? + v^2/2 + gz = constant

However, the atmospheric pressure and density are essentially the same at the peak and bottom of the falls. Therefore,

v^2/2 + gz = constant , so:

v_bottom^2/ 2 = v_top^2/2 + gz, or:

v_bottom = sqrt(v_top^2 + 2gz) = sqrt(v_top^2 + 2g*170)

If v_top ~ 0, then:

v_bottom ~ sqrt(2gz) = sqrt(2*9.8*170) = 57.7 (m/s)

What is the flow rate of water?

The amount of water that might theoretically flow out of your kitchen faucet or bathtub each minute is measured by your water flow rate, sometimes referred to as your gallons per minute (GPM). Your flow rate is affected by a number of variables, but your household size is the most important one.

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The average velocity of  you and your family go from Charleston to New Orleans is (Vₐ)= 152.92 km/h

The term velocity explains that the object or particle displacement within the respected time.  Average velocity is total displacement divided by total time.

To calculate the value of average velocity we are using the formula here is,

Vₐ = (s₁+s₂)/(t₁+t₂)= sₐ/tₐ

Here we are known,

t₁= You and your family leave to go from Charleston to New Orleans = 7:00 am.

t₂=You and your family reached to go from Charleston to New Orleans = 4.00 pm.

tₐ=Time interval between the leaving and reaching time=9 hour.

sₐ= The trip’s distance to go from Charleston to New Orleans= 850 miles

Now we put the values in the above equation we get,

Vₐ =sₐ/tₐ

Or, Vₐ =850 miles/9 hour

Or, Vₐ =94.4 miles/hour.

Or, Vₐ = 152.92 km/hour.

According to the calculation we can write that,

The average velocity of  you and your family go from Charleston to New Orleans is (Vₐ)= 152.92 km/h

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On vacation you and your family go from Charleston to New Orleans you leave at 7:00 am and arrive at 4:00 pm and the trip’s distance is 850 miles. what is the average velocity of the trip?

Considering the defintion of area of a rectangle and multiplication in scientific notation, you obtain:

Scientific notation is a quick way to represent a number using powers of base 10.

The numbers are written as a product:

a×10ⁿ

where:

Area of a rectangle

A rectangle is a flat geometric figure with four sides, of which two sides that are opposite parallel to each other have the same length and the remaining two have another length.

The area of a rectangle is calculated from the two different sides (a and b). It is the product of the two contiguous sides of the rectangle:

Area of a rectangle= a×b

where a and b are the measures of the two sides.

A rectangular piece of land with an area of 260,000 m² is 2,000 m long.

To write the area and length in scientific notation, the following steps are performed:

So, the rectangular piece of land with an area of 2.6×10⁵ m² is 2×10³ m long.

In this case, you know that a rectangular piece has:

Replacing in the definition of a rectangle:

2.6×10⁵ m²= width× 2×10³ m

2.6×10⁵ m²÷ 2×10³ m= width

To divide two numbers in scientific notation, you must divide the numbers that are not powers of 10 (what was previously called the "a" number). To divide the powers of ten, you must subtract the exponents. In this case:

Width= (2.6÷ 2)×10⁵⁻³ m

Width= 1.3×10² m

Finally, the width of the rectangular piece is 1.3×10² m.

In summary, you obtain:

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