Your lawn is twice as large as your neighbor’s lawn. You both start cutting your lawn with the same model, self-propelled lawn mower (requiring the same force) beginning at 9:00am on a Saturday morning. You finish cutting your lawn at 11:00 am. What time will your neighbor finish cutting her lawn if you are equally powerful?

The tension in the rope is changed by 75 N

Tension is the force that is transmitted through a body which can be a rope or a wire which is pulled from both sides. Whenever there is a rope being pulled from one side then according to Newton's third law, equal force is exerted by the rope on the other side. This transmission of forces is known as tension in that rope.

Given,

Mass 1 = m₁ = 1.5 kg

Mass 2 = m₂ = 7.5 kg + 1.5 kg = 9 kg

g = 10 m/s² = acceleration due to gravity

Tension in the rope when mass 1.5 kg is attached to the string,

T₁ = m₁g = 1.5 * 10 = 15 kg

Tension in the rope when mass 1.5 kg is attached to the string,

T₂ = m₂g = 9*10 = 90 kg

The change that tension undergoes

T₂ - T₁ = 90 - 15 = 75

Therefore, the factor by which the tension in the rope changes is 75 N

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When a 10-kg falling object encounters 10 N of air resistance, its acceleration is 2 m/s^2.

When a 10-kg falling object encounters 10 N of air resistance, its acceleration is calculated using Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration (F = ma).

In this case, the force acting on the object is the force of gravity (Fg) minus the force of air resistance (Fair):

F = Fg - Fair

The force of gravity is equal to the mass of the object multiplied by the acceleration due to gravity (g):

Fg = mg

Substituting this into the equation for force gives:

F = mg - Fair

Rearranging the equation to solve for acceleration gives:

a = (F + Fair)/m

Substituting the given values for force, mass, and air resistance gives:

a = (10 N + 10 N)/10 kg

a = 20 N/10 kg

a = 2 m/s^2

Therefore, when a 10-kg falling object encounters 10 N of air resistance, its acceleration is 2 m/s^2.

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Answer:

Comencemos con la primera:

si tenemos algo como:

7.1*10^n

Simplemente lo que tenemos que hacer es:

si n es positivo, movemos n veces el punto para la derecha, si no tenemos dígitos, completamos con ceros.

si n es negativo, movemos n veces el punto a la izquierda.

a) 7.1*10

aca tenemos n = 1

entonces movemos una vez el punto a la derecha:

7.1*10 = 71. = 71

b) 2.3*10^3

aca n = 3, entonces movemos el punto 3 veces a la derecha:

2.3*10^3 = 23__.

Tenemos dos huecos ahí, los cuales serán completados con ceros, entonces:

2.3*10^3 = 2,300. = 2,300

c) 1.56*10

n = 1, entonces movemos el punto una vez a la derecha:

1.56*10 = 15.6

d) 4.10^4

acá tenemos n = 4

entonces movemos el punto 4 veces a la derecha, recordar que debemos completar con ceros:

4.10^4 = 40,000. = 40,000

Coefficient 2  should be placed in front of HCl to balance  the given chemical equation.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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chlorophyll  is green because It absorbs wavelength in only the blue and red parts of the visible spectrum

The pigment chlorophyll is what gives green plants their green color. A portion of the visible light spectrum is absorbed by chlorophyll. Chlorophyll is a pigment that absorbs visible light in the red (long wavelength) and blue (short wavelength) portions of the spectrum. The plant appears green because it reflects rather than absorbs green light.

The chloroplasts of plants contain chlorophyll. Plants have chlorophylls a and b, though there are other forms as well. Only one side chain's makeup distinguishes these two forms of chlorophyll from one another.

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The speed with which a wave travels on the given piano string is approximately 73.4 m/s.

The speed of a wave on a string is given by the square root of the tension divided by the linear mass density of the string. Using the given values, we can calculate the speed as follows:

Wave speed = sqrt(tension/linear mass density)

Linear mass density = mass per unit length = 0.00587 kg/m

Tension = 1910 N

Substituting these values into the formula, we get:

Wave speed = sqrt(1910 N / 0.00587 kg/m) = 73.4 m/s

Therefore, the speed with which a wave travels on the piano string is 73.4 m/s.

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Answer:

time

Explanation:

For example, displacement, velocity, and acceleration are vector quantities, while speed (the magnitude of velocity), time, and mass are scalars. To qualify as a vector, a quantity having magnitude and direction must also obey certain rules of combination.

Answer:

fitness is very important to me

The magnet (south pole of the magnet) has magnetized the right side of the block.

The direction of electric field of the atom of the magnetic material is unpolarized.

From the diagram in the image, the right hand side of the magnetic material is being attracted to south pole of the magnet.

Thus, we can conclude that, the magnet has magnetized the right side of the block.

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Answer:False

Explanation:

Answer:

c

Explanation:

because because because

Answer:

b i believe

Explanation:

Answer:

3.67 m/s²

Explanation:

Draw a free body diagram.  There are two forces on the object:

Weight force mg pulling straight down,

and normal force N pushing perpendicular to the plane.

Sum the forces in the parallel direction.

∑F = ma

mg sin θ = ma

a = g sin θ

a = (9.8 m/s²) (sin 22.0°)

a = 3.67 m/s²

An atom with great electronegativity is able to attract electrons towards itself in a chemical bond. This means that it is able to form strong covalent bonds with other atoms, and can also participate in ionic bonding by attracting electrons away from other atoms.

Additionally, an atom with high electronegativity is able to exert a greater degree of control over the distribution of charge within a molecule, making it an important factor in determining the overall reactivity and behavior of the molecule.

Electronegativity is a measure of an atom's ability to attract electrons towards itself when it is part of a chemical bond. In other words, it is a measure of an atom's ability to pull electrons away from other atoms in a molecule. Electronegativity is an important concept in chemistry, as it helps predict how atoms will behave in chemical reactions.

Electronegativity is typically measured on a scale called the Pauling scale, named after the American chemist Linus Pauling. The scale ranges from 0.7 (for the least electronegative element, francium) to 4.0 (for the most electronegative element, fluorine). Elements towards the right side of the periodic table, such as the halogens and oxygen, are generally more electronegative than elements towards the left side, such as the alkali metals.

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Explanation:

(1) predation

(2) competition

(3) autotrophs

(4) heterotrophs

Answer:

12 pounds mine does

Explanation:

Answer: 10 pnds

Explanation:

The region of the atmosphere that is so evenly mixed that it behaves as if it were a single gas is known as the homosphere.

This region extends from the Earth's surface up to an altitude of approximately 80-100 kilometers. The homosphere is characterized by a relatively constant composition of gases, primarily nitrogen (78%) and oxygen (21%), with trace amounts of other gases such as carbon dioxide and argon.

The gases in the homosphere are well-mixed due to turbulent mixing processes, which help to distribute gases evenly throughout the region. This homogenous mixing also helps to maintain a relatively stable temperature and pressure profile in the atmosphere.

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The ending pump volume (EPV) and stroke volume (SV) are related to each other by the equation: SV = EDV - ESV

where EDV is the end-diastolic volume, which is the volume of blood in the ventricles at the end of diastole (when the ventricles are relaxed and filling with blood), ESV is the end-systolic volume, which is the volume of blood in the ventricles at the end of systole (when the ventricles have just contracted and ejected blood), and SV is the stroke volume, which is the volume of blood ejected from the ventricles with each heartbeat.

If the ESV is changed, then the SV will also change, because they are directly related to each other through this equation. For example, if the ESV is increased (i.e., there is more blood remaining in the ventricles after systole), then the SV will decrease, because less blood is being ejected from the ventricles with each heartbeat. Conversely, if the ESV is decreased (i.e., there is less blood remaining in the ventricles after systole), then the SV will increase, because more blood is being ejected from the ventricles with each heartbeat.

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Here's the formula you want to use to solve this:

Distance = (1/2) · (acceleration) · (time²)

We know the distance to the ground and the acceleration of gravity, so let's pluggum in:

. . . . . 125 m = (1/2) (9.8 m/s²) (time²)

Divide each side by (4.9 m/s²):  

. . . . . (125 m) / (4.9 m/s²) = time²

. . . . . 25.51 s² = time²

Square-root each side:

5.05 seconds  = time

The gravitational force between the Sun (mass = 1. 99 × 1030 kg) and Mercury (mass = 3. 30 × 1023 kg) is 8. 99 × 1021. Mercury is approximately 6.98 × 107 km away from the Sun.

The gravitational force between two objects can be calculated using Newton's law of universal gravitation:

F = (G * m1 * m2) / r^2

Where:

F is the gravitational force

G is the gravitational constant (approximately 6.67 × 10^-11 N m^2/kg^2)

m1 and m2 are the masses of the two objects

r is the distance between the centers of the two objects

In this case, the given gravitational force is 8.99 × 10^21 N, the mass of the Sun is 1.99 × 10^30 kg, and the mass of Mercury is 3.30 × 10^23 kg. We can rearrange the formula to solve for r:

r = sqrt((G * m1 * m2) / F)

Plugging in the values, we get:

r = sqrt((6.67 × 10^-11 N m^2/kg^2 * 1.99 × 10^30 kg * 3.30 × 10^23 kg) / (8.99 × 10^21 N))

Simplifying the equation, we find:

r = sqrt(13.19244 × 10^42 m^3/kg^2 / 8.99 × 10^21 N)

r = sqrt(1.4664 × 10^21 m^3/kg)

r ≈ 1.21 × 10^10 m

Converting this to kilometers, we get:

r ≈ 1.21 × 10^10 m * (1 km / 1000 m) = 1.21 × 10^7 km
Therefore, Mercury is approximately 6.98 × 107 km away from the Sun (option B).

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Answer:

c.glass sheet

Explanation:

glass sheet is the plain surface and it will have low friction. compare to cloth,sand have uneven surface

Answer:

3,688 meters (12,100 feet)

Explanation:

he deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.S. territorial island

Answer:

F = M a       Newton's Second Law

M = F / a = 31 N / 2.1 m/s^2 = 14.8 kg

Rather heavy since 1 kg mass weighs about 2.2 lbs force

The type of repetitions that are completed with an intentionally reduced range of motion is called Partial repetitions. That is option A.

Repetitions in exercise is defined as a complete exercise movement done during a workout procedure.

The different types of repetitions include the following:

Partial repetitions are those types of repetitions that are carried out while removing some part of the range of motion in the exercise.

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Pressure is a notion that includes both force and area. The amount of force applied per area is what is meant by the term pressure.

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Answer:

Batteries are intended to store chemical energy and then it converts into electricidal energy. So overall, batteries produce energy.

Explanation:

Archimedes' principle can be used to calculate the density of a fluid as well as that of a solid. If a chunk of copper with a mass of 467.5 g in air is found to have an apparent mass of 431.4 g when completely submerged in an unknown liquid. (a) The mass (in g) of fluid does the copper displace will be36.1 g (b) The volume of copper (in cm3), using its density will be 51.944 \(cm^{3}\) (c) The fluid's density will comes out to be 0.694 g/\(cm^{3}\).

Given,

The mass of the copper chunk, M = 467.5 g

Apparent mass of the copper chunk, m = 431.4 g

According to the Archimedes' principle

(a) The mass of fluid does the copper displaces = M - m

= 467.5 g - 431.4 g

=36.1 g

(b) To calculate the density of the copper chunk we must know its density, which is 9 g/\(cm^{3}\),

So, volume of the copper = Mass (M)/density

= 467.5/9

= 51.944 \(cm^{3}\)

(c) The density of the fluid will be the mass of the fluid divided by the volume, which can be represented as;

Density = Mass/ volume

= 36.1/51.944

= 0.694 g/\(cm^{3}\)

Hence, the mass of fluid does the copper displaces will be 36.1 g, volume of the copper chunk will be 51.944 \(cm^{3}\) and density of the fluid will be 0.694 g/\(cm^{3}\).

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The resultant reaction P (Newton) acting on the body is determined as 14.7 N.

Limiting equilibrium means that an object is just on the threshold of motion. In other words, a slight application of force will result in the motion of the body.

The resultant reaction P (Newton) acting on the body is calculated by applying Newton's second law of motion as follows;

∑F = ma

where;

F - Ff = ma

where;

If the body is in equilibrium, the acceleration of the body is zero.

F - Ff = m(0)

F - Ff = 0

F = Ff

F = Ff = 14.7 N

Thus, the resultant reaction acting on the body is a function of the applied force and the direction of the force as shown in the above calculation.

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The strength of gravity on Zarflax-beta-9z is 17 N/kg.

We can use the formula:

weight = mass x gravity

to determine the strength of gravity on Zarflax-beta-9z.

We know that the mass of the book is 3 kg and its weight is 51 N. So, we can rearrange the formula to solve for gravity:

gravity = weight / mass

gravity = 51 N / 3 kg

gravity = 17 N/kg

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