if 0.6 j of work are needed to stretch a spring from 12 cm to 14 cm and 1 j are needed to stretch it from 14 cm to 16 cm, what is the natural length of the spring?

The momentum flow rate through the pipe carrying liquid ammonia is 1 × \(10^6\) kg·m/s.

The flow rate of momentum (Ṁ) through the pipe can be calculated by multiplying the mass flow rate (ṁ) by the velocity (v). The speed can be determined using the equation v = ṁ / (ρA), where ρ is the density of the liquid ammonia and A is the pipe's cross-sectional area.

Given:

ṁ = 100 kg/s

A = 0.01 m²

Assuming the density (ρ) of liquid ammonia is 700 kg/m³, we can calculate the velocity (v):

v = ṁ / (ρA)

v = 100 kg/s / (700 kg/m³ × 0.01 m²)

v = 10000 m/s

Now, we can calculate the flow rate of momentum (Ṁ):

Ṁ = ṁv

Ṁ = 100 kg/s × 10000 m/s

Ṁ = 1 × \(10^6\) kg·m/s

Therefore, the momentum flow rate through the pipe is 1 × \(10^6\) kg·m/s.

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Answer:

c. may be accompanied by the sound of explosively expanding hot air, called thunder.

Explanation:

Lightning is a discharge which is due to the reaction between oppositely charged charges in the clouds, or between clouds base and the Earth surface.

The motion of the cloud causes charging of clouds by friction, thus the reaction between opposite charges (jumping of charges from one cloud to another) in the cloud can lead to lightning. Also, oftentimes the bottom of a cloud is negatively charged so that this is attracted to the positive charge on the earth surface. Thus leading to a discharge called lightning.

Thus in the given question, the appropriate option is C. This implies that, lightning may be accompanied by the sound of explosively expanding hot air, called thunder.

Answer:

temperature inside the balloon so it is warmer than the surrounding air

Explanation:

For the balloon to get an uplift , it should be lighter than air . That means the density of the gas inside should be less than the density of air outside . only then ,  weight of the balloon plus the weight of the air inside balloon  will become less than the weight of displaced air outside . This can be achieved by warming up the air inside. Its temperature must exceed that of outside air.

The option that best explain how the pilot can make the balloon rise is option D. The pilot can increase the temperature inside the balloon so it is warmer than the surrounding air

An object will float in air when the density of the object is lower than the density of the air.

Increase in temperature of a gas decreases the density of the gas.

For the pilot to make the balloon rise, he must find a way to make the balloon more lighter than air. To do this, he has to increase the temperature of the balloon.

In this question, the pilot can increase the temperature inside the balloon so it is warmer than the surrounding air in order for the balloon to quickly rise several feet higher above some trees in distance.

Therefore, option D best explain how the pilot can make the balloon rise.

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Answer:

C

Explanation:

Answer:

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

From the question we have

PE = 90 × 9.8 × 12 = 10,584

We have the final answer as

Hope this helps you

Answer:

B

Explanation:

The first modern personality test was the Woodworth Personal Data Sheet, which was first used in 1919. It was designed to help the United States Army screen out recruits who might be susceptible to shell shock.

so, B is correct

Answer:

The answer is B, I hope this helps.

Answer:

bc we play when we are bored and some people use it as a tradition to play on thanksgiving

The velocity of the car when it began coasting was approximately 17.2 m/s.

If a car is coasting without any external force acting on it (such as friction), then its initial kinetic energy is converted entirely into potential energy as it moves uphill. Therefore, we can use the principle of conservation of energy to solve this problem.

The principle of conservation of energy states that the total energy of a closed system (in this case, the car and the Earth) remains constant over time. Therefore, the initial kinetic energy of the car is equal to the potential energy gained as it moves uphill. Mathematically, we can express this as:

1/2 mv^2 = mgh

where:

m = mass of the car

v = initial velocity of the car when it began coasting

g = acceleration due to gravity (9.8 m/s^2)

h = height gained by the car (15 m)

We can simplify this equation by canceling out the mass (m) on both sides:

1/2 v^2 = gh

Substituting the given values, we get:

1/2 v^2 = 9.8 m/s^2 * 15 m

v^2 = 2 * 9.8 m/s^2 * 15 m

v = √(2 * 9.8 m/s^2 * 15 m)

v ≈ 17.2 m/s

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It is true that a vector's component can vary depending on the chosen coordinate system, that a vector can be multiplied by a scalar, and that a vector can have a component equal to 0 even if its magnitude is not 0.

The idea that a vector cannot have a different direction in different coordinate systems is untrue. A physical quantity that exists without us is represented by a vector. As a result, the vector itself is independent of the coordinate system we use. However, the vector's coordinates are affected by the coordinate system. Only when two vectors have the same magnitude and direction are they regarded as being equal. The coordinate system has no influence on a vector.

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Gamma rays are given out by the nucleus of certain radioactive materials. Radioactive material ray causes harm to the human beings and environment.

Gamma decay is the production of extremely high-frequency electromagnetic radiation in order to stabilize the unstable nucleus. You must be well-versed in the various energy levels found in an atom.

The Nucleus has its own amount of energy. Gamma decay is the nucleus' method of transitioning from a higher energy level to a lower energy level by emitting high energy photons.

Gamma rays are given out by the nucleus of certain radioactive materials.

Hence, nucleus is the right answer for the blank.

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The correct answer is OD. microwaves. Longwave radiation is a type of electromagnetic radiation with wavelengths longer than infrared radiation.

Longwave radiation is a type of electromagnetic radiation with wavelengths longer than infrared radiation. It includes microwaves, radio waves, and some types of infrared radiation.

X-rays, ultraviolet radiation, and gamma rays are all types of shortwave radiation.

Here is a table that shows the different types of electromagnetic radiation, their wavelengths, and their uses:

Type of radiation Wavelength (nm) Use

Gamma rays 0.01 - 100 Medical imaging, cancer treatment

X-rays 10 - 100,000 Medical imaging, industrial radiography

Ultraviolet radiation 10 - 400 Sunlight, tanning beds, germicidal lamps

Visible light 400 - 700 Human vision, lasers, light bulbs

Infrared radiation 700 - 1000,000 Night vision, thermal imaging, cooking

Microwaves 1 mm - 1 m Radar, microwave ovens, communication

Radio waves 1 m - 100 km Radio broadcasting, television, cell phones

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The capillary rise in a glass tube that is 1.0 mm in radius when the surface tension of water is 0.0728 jm2 can be calculated as follows:Capillary rise=2Tcosθ/ρgrWhere, T is the surface tension of water, θ is the contact angle between the water and the glass tube, ρ is the density of water, and g is the acceleration due to gravity.

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Answer:

150 miles

Explanation:

just do 50x3

Answer:

150 miles

Explanation:

50 x 3 = 150

To make 4 amperes flow through a resistance of 20 ohms, 80 volts of voltage are required.

Ohm's law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. In other words, the greater the voltage, the greater the current that flows through a given resistance.

The voltage required to make 4 amperes flow through a resistance of 20 ohms can be calculated using Ohm's law:

Voltage (V) = Current (I) x Resistance (R)

Therefore, V = 4 A x 20 Ω = 80 V

So, to make 4 amps flow through a resistance of 20 ohms, 80 volts of electricity are required.

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Answer:

9.6 minutes

Explanation:

We have that it takes Claire \(t=0.16h\) amount of time to get to school

\(t=0.16h\)

From the Question we are told that

Velocity\(v= 25 km/h.\)

Distance \(d=4km\)

Generally the equation for Time  is mathematically given as

\(v=\frac{d}{t}\\\\t=\frac{4}{25}\\\\t=0.16h\)

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Answer:

1 -a push or a pull acting on a object.

Explanation:

force is a push or pull acting upon an object as a result of its interaction with another object.

The α helix and β pleated sheet are examples of the secondary structure of protein. Hence, the correct option is (c).

The secondary structure of a protein refers to the local spatial arrangement of its amino acid residues, which are the building blocks of proteins. The α helix and β pleated sheet are two common types of secondary structure in proteins. The α helix is a right-handed helical structure that is stabilized by hydrogen bonds between the carbonyl group of one amino acid residue and the amide group of another, four residues down the polypeptide chain. The α helix structure resembles a spiral staircase, with the amino acid residues forming the steps and the hydrogen bonds forming the railings. The β pleated sheet, on the other hand, is a sheet-like structure that is stabilized by hydrogen bonds between neighboring amino acid residues in different parts of the polypeptide chain. The β pleated sheet is formed when the polypeptide chain folds back on itself, creating a sheet-like structure with the hydrogen bonds forming the edges of the sheet. The secondary structure of a protein is important because it helps to determine the overall shape of the protein, which in turn determines its function. The α helix and β pleated sheet are important secondary structures in many proteins, including enzymes, antibodies, and structural proteins.

In summary, the α helix and β pleated sheet are examples of the secondary structure of proteins, which refers to the local spatial arrangement of amino acid residues in a protein. The α helix is a right-handed helical structure, while the β pleated sheet is a sheet-like structure. The secondary structure of a protein is important for determining its overall shape and function.

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Amphibians retain a set of gills their whole lives that help them to breathe in the water. So, the correct option is D.

Amphibians are defined as the class of cold-blooded vertebrates which is made up of frogs, toads, salamanders, newts, and caecilians. All amphibians that spend part of their lives in water and part of their lives on land.

Amphibians are born with gills, and some outgrow them when they become adults while others retain them for their entire lives.

Thus, the correct option is D.

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The ball has traveled 20 meters in a horizontal direction. The outcome is achieved by using the idea of projectile motion.

Just as for speed, "m/s" is the SI unit for velocity. (a) While mobility is just the rate at which a body's displacement changes, speed refers to the pace at which a body's distance traveled changes. While velocities is a vector field and requires both magnitude and orientation to really be described, speed is a rudderless quantity.

dx = dVx × t

dx = 4 m/s × 5 s

dx = 20 m

Hence, the ball has travelled 20 m at the horizontal distance.

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Answer:

The object accelerates downward at 4 m/s² since the tension on the rope is less than weight of the object.

Explanation:

Given;

mass of the object, m = 2 kg

weigh of the object, W = 20 N

tension on the rope, T = 12 N

The acceleration of the object is calculated by applying Newton's second law of motion as follows;

T = F + W

T = ma + W

ma = T - W

\(a = \frac{T-W}{m} \\\\a = \frac{12 - 20}{2} \\\\a = -4 \ m/s^2\) (the negative sign indicates deceleration of the object)

The object accelerates downward at 4 m/s² since the tension on the rope is less than weight of the object.

Answer:

it was equal to the weight of the object

hope it helped ☺️

The new resistance of the wire will be 4 times the original resistance (r0).

This is because the resistance of a wire is proportional to its length and inversely proportional to its cross-sectional area. Doubling the length of the wire will double its resistance. Halving the diameter of the wire will result in a reduction of its cross-sectional area by a factor of 4, which will result in an increase in its resistance by a factor of 4. The net effect is that the resistance of the wire will be 4 times the original resistance.

To be more precise, the resistance R of a wire is given by the equation

R = ρL / A

where ρ is the resistivity of the material, L is the length of the wire, and A is its cross-sectional area. So, if we double the length and halve the diameter, the new resistance will be given by

R = ρ(2L) / (A/4) = 4ρL / A = 4R0.

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Generator functions can be used on their own to create iterable objects. They are defined using the "yield" keyword instead of "return" and generate a sequence of values as they are iterated over.

On the other hand, generator functions can also be used within the __iter__ method of a class to create iterable objects. In this case, the generator function is defined within the class and called when the object is iterated over. This allows for greater control over the iteration process and the ability to add additional functionality to the iterable object. By defining the generator function within the class, it can also access the object's attributes and methods, allowing for greater flexibility in the iteration process. Overall, using generator functions within a class allows for more customizable and efficient iteration over large datasets.

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Answer:

W = 19.845 J

Explanation:

Work is defined as W = Fdcos\(\theta\), where F is the force exerted and d is the distance. Because the direction the ball is falling is the same direction as the force itself, \(\theta\) = 0 deg, and since cos(0) = 1, this equation is equivalent to W = Fd. In this case, the force exerted is the weight force, which is equivalent to m * g. Substituting you get:

W = mgd = 0.810 kg * 9.8 m/s^2 * 2.5m

W = 19.845 J

The statement that the nitrogen geysers of Triton carry carbon grit into the winds of its atmosphere is false.

Triton is a moon of the planet Neptune, and it is known for its unique geological features, including nitrogen geysers. These geysers are believed to erupt from beneath the surface, expelling nitrogen gas and dust particles into space. However, there is no evidence or scientific consensus to suggest that these geysers carry carbon grit into the winds of Triton's atmosphere.

Carbon grit refers to small particles of carbonaceous material, such as soot or dust. While carbon compounds have been detected on Triton's surface, primarily in the form of organic molecules, there is no specific information or observations indicating the presence of carbon grit being transported by nitrogen geysers or carried into Triton's atmosphere.

The understanding of Triton's atmosphere and geology is based on limited direct observations, as the Voyager 2 spacecraft provided the most detailed data during its flyby in 1989. Further investigations and future missions may provide additional insights into the composition and dynamics of Triton's atmosphere and the role of geysers in its overall processes.

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Answer:

Violation of intellectual property rights

Explanation:

Im sorry I am late but for the future people its A! :)) Have a great day :)

Answer:

sorry I don't understand

Explanation:

please translate it in english

We will have that the picture that shows the highest average kinetic energy is image B.

See attached. I have no clue as to why this answer is getting flagged for inappropriate words or links...