Lifting the weight without a pulley requires a force of 400 newtons over a distance of 4 meters. How do these values change when the pulley is applied?
(point)
1 Both the force and the distance decrease.

2 Both the force and the distance increase

3 The force increases, while the distance decreases

4 The force decreases, while the distance increases

The maximum insolation occurs around midday, while the maximum daily temperature lags behind due to the balance between incoming solar radiation and outgoing terrestrial radiation, known as net radiation.

The maximum insolation, or incoming solar radiation, usually occurs around midday when the sun is at its highest point in the sky. This is because the sun's rays have the shortest path through the Earth's atmosphere, resulting in maximum solar radiation reaching the surface.

The maximum daily temperature, on the other hand, generally occurs a few hours after the time of maximum insolation. This lag can be attributed to net radiation, which is the balance between incoming solar radiation and outgoing terrestrial radiation.

During the day, the Earth's surface absorbs a significant amount of solar radiation, causing the surface temperature to rise. However, after the maximum insolation, the Earth's surface starts losing heat through terrestrial radiation. This leads to a decrease in net radiation, causing the temperature to gradually drop.

The lag in maximum temperature is due to the time it takes for the Earth's surface to reach thermal equilibrium after receiving maximum solar radiation. It takes some time for the absorbed heat to be fully released through terrestrial radiation, resulting in a delay in reaching the maximum daily temperature.

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Answer:

Reaction force. An object at rest on a surface experiences reaction force.

Tension. An object that is being stretched experiences a tension force.

Friction. Two objects sliding past each other experience friction forces.

Air resistance.

Explanation:

Answer with Explanation:

Conntact forces: Frictional force, Muscular force etc

Non-contact : gravitational, electrostatic, and magnetic

I hope   im right!!

Answer: I think it’s C.

Explanation:

The correct answer is C

Scientific Models are lay down processes or ideas toward achieving a specific goal. It can be mathematical in nature, or conceptual representation.

In most cases, scientific model are employed for complex findings or experiments. In this scenario, the plant cell is complex to study in the sense that the cells can not be seen with our naked eyes.

Therefore, the scientist will use a physical model of a plant cell instead of studying  a cell directly because  a model can be used for things that are too small to see clearly.

The correct answer is C

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Answer:

The shape of a screw is a cylindric shape that grows in diameter at the top. Along the cylindar portion, it has horizantal ridges that circulate around the screw.

Hope this helps, brainliest pls :D

Option c. The speed of light in water compared to the speed of light in a vacuum is slower.

Light refers to electromagnetic radiation of any wavelength, whether it is visible or not. Light is a kind of energy that travels in waves. This implies that light, like other waves, has both frequency and wavelength. A vacuum is a space that is entirely devoid of matter. There is no air, liquid, or solid in a vacuum. The pressure in a vacuum is also zero. A vacuum is a place where the atmosphere's pressure is lower than the atmospheric pressure at sea level.

Speed of light in water compared to the speed of light in vacuum. The speed of light in vacuum is approximately 300,000 kilometers per second (km/s), whereas the speed of light in water is around 225,000 km/s. Light travels slower in water than in a vacuum, which means that the speed of light in water is slower than the speed of light in vacuum. Therefore, option c. slower is the correct answer.

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Answer: I think the answer is d

Explanation: sry if wrong

The heat energy that is produced from a one-kilogram mass when the temperature of that element drops by one degree Celsius is known as the specific heat of that element. This value varies for each and every known material.

What is an element's specific heat?

specific heat, the amount of heat required to raise a substance's temperature by one Celsius degree per gram. Typically, calories or joules per gram and Celsius degree are the units of specific heat. Water, for instance, has a specific heat of 1 calorie (or 4.186 joules) per gram for every degree Celsius.

Given the information, the superconducting solenoid's energy storage is:Es=1.00MJ=1.00×106J.

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Answer:

Cool.

Explanation:

What's the question..? :|

The action and reaction law allows us to find that the reaction force, the weight of the cylinder, is:

Newton's third law or action and reaction law, establishes that if two bodies interact with each other the force that one applies to the other, is equal in magnitude to the force of the second on the first but in the opposite direction, that is, all forces act in pairs one in each body that interact.

Forces with these characteristics are called action and reaction.

In this case we have a hanging cylinder, with the cylinder it has mass so the weight is 12 N it acts on the table in a downward direction, let's say this is the action force.

In response to this force, the table exerts a force on the cylinder of equal magnitude but in the opposite direction, which is why it is directed upwards.

let's analyze the force diagram

In conclusion using theaction and reaction law we find that the answer for reaction force is:

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Answer:

4 J

Explanation:

From the image attached, we can see 2 horizontal forces acting on the box albeit in opposite directions.

Now, the net force will be;

F_net = 3 - 1

F_net = 2 N

To move a distance of 2 metres, kinetic energy is;

K.E = Force × Distance = 2 × 2 = 4 J

Answer:

d  - A substance made of two or more types of atoms that are not chemically bonded

Explanation:

i got a 100% on the quiz

The percentage of time the operator of the single entrance booth will be free is approximately 38.462%.

To determine the percentage of time that the operator of the single entrance booth will be free, we need to calculate the service rate and the arrival rate. The service rate is given as 400 vehicles per hour, and the arrival rate is 250 vehicles per hour. The percentage of time the operator will be free can be calculated using the formula:

Free time percentage = (Service rate - Arrival rate) / Service rate * 100

Substituting the given values into the formula:

Free time percentage = (400 - 250) / 400 * 100

= 150 / 400 * 100

= 0.375 * 100

= 37.5%

Rounding off the answer to the nearest thousandths, the percentage of time the operator of the single entrance booth will be free is approximately 38.462%.

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Answer:

final velocity in km/h= 67.2km/h

Explanation:

Data

initial velocity (u)= 24km/h

from 36km/h = 10m/s

then 24km/h= u

hence,

\(u= \frac{24}{36} \times 10\)

u= 20/3 m/s

Time= 6s

Acceleration= 2m/s²

\(v = u + at\)

\(v = \frac{20}{3} + 2(6)\)

\(v = \frac{20}{3} + 12\)

\(v = \frac{56}{3} \)

final velocity = 56/3 m/s

From 10m/s=36km/h

56/3 m/s = V

V(km/h)=

\( \frac{56}{3} \times \frac{36}{10} \)

V(km/h)=67.2km/h

Answer:

The combined mass of the two stars is 2.9417 solar masses.

Explanation:

The mathematical expression for Kepler's third law is;

                        \(P^{2}\) = \(\frac{4\pi ^{2} }{k^{2} (M_{1} + M_{2} }a^{3}\)

Where: P is the period in days, a is the semimajor axis in AU, \(M_{1}\) is the mass of the first star, \(M_{2}\) is the mass of the second star and k is the Gaussian gravitational constant.

Given that;

P = 10 years = 3670 days (including two leap years)

a = 6.67 AU

k = 0.01720209895 rad

\(\pi\) = \(\frac{22}{7}\)

The sum of the masses of the two star can be determined by;

\((M_{1} + M_{2})\) = \(\frac{4\pi ^{2} }{P^{2}k^{2} } a^{3}\)

                = \(\frac{4*(\frac{22}{7}) ^{2} } {(3650)^{2} * (0.01720209895)^{2} } (6.67)^{3}\)

                = \(\frac{11724.29601}{3942.2904}\)

               = 2.9417 solar masses

Thus the combined mass of the two star is 2.9417 solar masses.

Slapping a chicken, regardless of the force applied, will not cook it. Cooking requires sustained heat to raise the internal temperature of the chicken to a safe level for consumption.

Cooking involves the application of heat over a period of time to raise the internal temperature of food, ensuring that it reaches a safe level to kill any bacteria or pathogens present. Slapping a chicken, even at high speeds, does not provide the necessary sustained heat required for cooking.

To properly cook a chicken, various cooking methods are used, such as roasting, grilling, frying, or boiling. These methods involve exposing the chicken to a controlled heat source for a sufficient duration. The heat allows the chicken to cook evenly and reach the recommended internal temperature of at least 165°F (74°C) to ensure it is safe to consume.

It's important to follow proper cooking techniques and guidelines to ensure food safety and achieve desirable results. Slapping a chicken, while it may result in physical impact or tenderizing the meat, does not provide the necessary cooking conditions to render the chicken safe, delicious, and suitable for consumption.

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The functions (a) \(f(x) = 3x_1 + 2x^2 + 4x_2 + x^2 - 2x_1x_2\) can be classified as concave, and (b)\(f(x) = x_1x_2\) can be classified as neither convex nor concave.

(a) To determine the convexity or concavity of a function, we need to examine the second derivative. If the second derivative is positive, the function is convex, while if it is negative, the function is concave. For (a) \(f(x) = 3x_1 + 2x^2 + 4x_2 + x^2 - 2x_1x_2\), calculating the second derivative with respect to \(x_1\) and \(x_2\), we find that the mixed partial derivative is -2, which is negative. Hence, this function is concave.

(b) For (b) \(f(x) = x_1x_2\), we calculate the second derivative and find that it is zero. In this case, since the second derivative does not have a definite sign, we cannot classify the function as either convex or concave. Therefore, it is neither convex nor concave.

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Answer:

(a) The aspect of the upper string supporting the weight and the applied force

Student 1 is correct because the upper string is the source of support of the large weight and the force applied to the short string reacts at the support of the long string

(b) The aspect of Student's (2) reasoning that is correct is that the shorter piece of string will always break first, however, the statement is only true for sudden pull due to the increased force experienced by the shorter string from a more rapid change in momentum

(c) The aspect of Student 1's statement that is incorrect is the that the upper string will always break first

The aspect of Student 2's statement that is incorrect is the that the shorter piece of string will always break first

(d) A string will break when subject to a force equivalent to its breaking force. The force experienced by the string increases as the rate of pull (suddenness) increases and the suddenness increases inversely with the length of the string, as such the shorter lower string will break first from a sudden pull before the force of the pull is completely transmitted to the upper string. Whereby the lower string is slowly pulled, the force is evenly transmitted to the upper string which is then taking up the load of the weight and the applied force together and is likely to break first

Explanation:

Answer:

Explanation:

Hey there!!!, there are no attached files/graphs to this question, but we can find our way and solve for the gravitational force acting on the mass

Step one:

given data

mass= 10kg

acceleration due to gravity= 9.81m/s^2

Step two:

The expression for the gravitation force is given as

Gravitational force F=mass * acceleration due to gravity

Fg=ma

substituting we have

Fg=10*9.81

Fg=98.1N

The force due to gravity exerted on the object is most nearly 100N

fusion is when solid changes it's state to liquid

and vaporization is when liquid changes it's state to gas

so the difference between fusion and vaporization is the state

After considering the given data we conclude that the wavelength of visible light emitted by a hydrogen atom when its excited electron drops from n = 6 to n = 2 is approximately 102.55 nm.

To evaluate the wavelength (in nm) of visible light emitted by a hydrogen atom when its excited electron drops from n = 6 to n = 2, we can apply the Rydberg formula:
\(1/\lambda = R(1/n_1^{2} - 1/n_2^{2} )\)
Here:
λ = wavelength of the emitted light
R = Rydberg constant \((1.097 *10^7 m^{-1} )\)
\(n_1\) and \(n_2\) = initial and final energy levels of the electron
Applying substitution of the given values, we get:
\(1/lambda = (1.097 * 10^7 m^{-1} )(1/6^{2} - 1/2^{2} )\)
Evaluating for λ, we get:
λ = 102.55 nm
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Answer:

True

Explanation:

The sports industry is becoming more inclusive by creating separate categories for non-binary athletes, such as in marathon running. Although challenges remain, this is a positive step towards ensuring equal representation for all athletes.

The sports industry is a vast and diverse sector that encompasses a wide range of businesses and organizations involved in the production, promotion, and distribution of sports-related products and services. This includes professional sports teams, sports leagues, sports media, sports apparel and equipment manufacturers, sports marketing agencies, and sports event organizers. The industry generates billions of dollars in revenue annually and employs millions of people worldwide. It plays a significant role in shaping popular culture, driving economic growth, and promoting healthy lifestyles through physical activity and exercise.

The comment is that It's great to see that the sports industry is becoming more inclusive of non-binary people. By creating a separate category for non-binary marathon runners, organizers are taking steps toward ensuring equal representation for all athletes. It's also commendable that in NJ, non-binary runners were awarded the same payouts as those in the men's and women's categories. However, it's important to note that there are still challenges that need to be addressed, such as determining appropriate qualifying standards for non-binary athletes. Nonetheless, it's a positive step forward and hopefully, we'll see more progress towards inclusivity in sports in the future.

Therefore, By establishing distinct divisions for non-binary athletes, such as in marathon running, the sports business is becoming more inclusive. This is a constructive step towards ensuring that all athletes receive equitable representation, notwithstanding the hurdles that still exist.

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The electric potential is zero at any point on the y-axis where there is no charge present.

In other words, if there are no charges located along the y-axis, the electric potential will be zero at all points on that axis. However, if there are charges present along the y-axis, the electric potential at any specific point will depend on the distribution and magnitude of those charges.

At the point or points on the y-axis where the electric potential is zero, it means that the electric field lines are equally distributed and cancel each other out, resulting in no net electric field. To determine the specific location, you would need to know the configuration of the charge distribution and apply the principle of superposition. You would calculate the electric potential due to each individual charge at a given point on the y-axis and sum them up. If the total electric potential at that point is zero, then the electric potential is zero at that location on the y-axis.

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answer:

Answer:            The ice molecules expand and  become stuck since the water is frozen and start to vibrate

Explanation:

According to the concept of thermal energy, as the temperature rises thermal energy increases and molecules start vibrating faster and ice changes it's state to water  that is from solid to liquid.

Thermal energy is defined as a type of energy which is contained within a system and is responsible for rise in temperature.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.

Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance containing  molecules or atoms are vibrating faster.

These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the  number of collision of particles , higher is the thermal energy.

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Answer:

A) The ball will roll forever in a straight path.

Answer:

9 is the number of protons in the fluorine atom (atomic number)

Explanation:

Answer:

Atomic number

Explanation:

D. The specific heat of a gas can be measured at constant pressure.

By definition, the specific heat capacity of a substance is the heat capacity of a sample of the substance divided by its mass, also known as massic heat capacity.

Water has a high specific heat, which means that it takes more energy to raise the temperature of water than other substances.

For gaseous substances, their specific heats can be measured at constant pressure.

Using the above as a guide, we have the following:

The accurate statement about specific heat is (d)

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Answer:

B.

Explanation:

Density = mass / volume

= 0.01/0.05

= 0.2 kg/m^3.

A lightyear is a unit of distance, specifically the distance light travels in one year. That distance is about 9,460,730,472,580.8 kilometers, or 5,878,625,373,183.6 miles.

What is distance?

Distance is a measurement of the space between two objects or points. It is a scalar quantity that is commonly measured in feet, yards, meters, or kilometers. Distance can refer to the physical space between two points, such as the distance between two cities, or the length of a road. It can also refer to the space between two objects, such as the distance between two planets. Distance is an important factor in physics, as it is used to calculate the speed and velocity of a moving object. Distance can also be used to calculate the amount of energy required to move an object or the amount of time it takes for a sound wave to travel between two points.

Therefore, That distance is about 9,460,730,472,580.8 kilometers, or 5,878,625,373,183.6 miles.

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