two people are pushing a couch from opposite sides. one person pushes with a force of 2 N. the other person pushes with a force of 4 N. which of the following best describes how the couch will move?

The smallmouth bass is the organism in the food web that can be a first-level consumer or a second-level consumer depending on its diet.

In the given food web, the organism that is sometimes a first-level consumer and sometimes a second-level consumer is the smallmouth bass.

The smallmouth bass is a first-level consumer when it feeds on the primary consumers, such as crayfish and insects. However, it can also be a second-level consumer when it feeds on other first-level consumers, like the minnows and sunfish.

Therefore, the smallmouth bass can occupy different trophic levels depending on its diet, making it a versatile consumer in the food web.

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Answer:

6 - crest

7 - amplitude

8 - wavelength

9 - trough

Explanation:

Just finished and got it correct

Answer:

7.5 V

Explanation:

The additional mass of water that can evaporate before reaching full saturation is 3.42 kg for a room volume of 450 m³.

The question deals with the concepts of humidity, temperature, and the capacity of air to hold water vapor. At 30°C, the saturation vapor density of water is approximately 30.4 grams per cubic meter. If the room is at 75% relative humidity, that means the current water vapor density is 75% of the saturation vapor density. Therefore, the room currently has 0.75 × 30.4 g/m³ = 22.8 g/m³ of water vapor.

To find out how much more water can evaporate, we need to calculate the difference between the saturation vapor density and the current vapor density. This difference represents the capacity for additional water vapor before the air becomes saturated at 100% humidity. So, the additional mass of water that can evaporate into the room is (30.4 g/m³ - 22.8 g/m³) × 450 m³ = 3420 grams, or 3.42 kilograms.

The answer is The coastline experiences tidal bulge twice a day. This occurs due to the rotation of the earth. When the sun is either on the same side as the moon or opposite side of the moon relative to the earth (which happens twice a day), then the coastline will experience high tide on these two occasions. Tides are caused by gravitational effect on water masses on the earth that cause them to bulge towards the direction of the two celestial bodies.

Answer:

The coastline experiences tidal bulge twice a day

Explanation:

Answer:

FALSE

Explanation:

Circular motion refers to the motion of an object in a circular path. This occurs at or near the surface of the earth as well as outside the earth in the space. This can be supported by the following pieces of evidence-

(1) The moon and the other artificial satellites that are moving constantly around the earth in a circular path.

(2) The planets going around the sun forming the solar system also maintains a circular and elliptical plane.

(3) Tying a stone with a rope and swinging it in circles maintaining a constant velocity also satisfies the condition of circular motion at or near the surface of the earth.

Thus, the above-given statement is false.

Answer:

Graph B shows  the solubility of gas dissolved in a liquid.

In graph B the temperature is increasing and solubility decreases

So, when temperature increases the molecules of the gas becomes free their kinetic energy increases.

Hence, their solubility decreases they will be more present in the form of vapors.

Therefore, Option B is correct that is gas dissolved in a liquid.

Answer:

B) gas dissolved in a liquid

Explanation:

The centripetal acceleration of the object moving in uniform circular motion with a radius of 1.0 meter and completing 10 revolutions in 4.0 seconds is calculated to be 39.478 m/s²

To calculate the centripetal acceleration of an object in uniform circular motion, you can use the formula ac = v2 / R, where v is the velocity and R is the radius of the circle. In this case, since the object makes 10 revolutions in 4.0 seconds, we find the velocity by first calculating the circumference with C = 2πR, which is 2π meters because R = 1.0 meter. Then, the total distance traveled in one revolution is 2π meters, and in ten revolutions, it is 10 x 2π meters. The speed v is the total distance traveled divided by the time, so v = (10 x 2π) / 4.0 meters per second. Then, square the speed and divide by the radius to find the centripetal acceleration: ac = (10 x 2π / 4.0)2 / 1.0.

After performing the calculations, ac = 39.478 m/s² as the centripetal acceleration of the object.

Answer:

the visible light spectrum emitted by a star → the chemical composition of the star

the brightness of a star → the distance between the star and Earth

the color of a star → the temperature of the star

Explanation: plato  :3

Answer: 295N

Explanation:

Explanation:

If a positively charged particle moves into a magnetic field traveling in a straight line then there will be Lorentz force which acts on the positively charged particle.

The force exerts on a moving charge in a magnetic field. This force is Lorentz force.

The expression for Lorentz force is as follows;

[tex]F=q(v\times B)[/tex]

[tex]F=qvBsin\theta[/tex]

Here, q is the charge, v is the velocity, [tex]\theta[/tex] is the angle between velocity and the magnetic field and B is the magnetic field.

There will be two conditions.

(1) If the positively charged particle moves parallel to the magnetic field then there will be no force on this particle. There is no deviation from the straight line. As the Lorentz force depends on the cross product of velocity and magnetic field. Sine 180 degree or sin 0 degree is zero in this case.

(2) If the positively charged particle moves perpendicular to the magnetic field then it follows the curved path until it completes the circle. The force is perpendicular to the direction of motion of the charged particle.

The charged particle will move in a circular motion.

Answer:

hello im not here to answer the question, sorry.

There is somthin familar about your name Katelyn.

Are you Katelyn.H? from k12, 8th grade? because Im Rukaiya

Explanation:

Final answer:

A mirror with an inward curvature and a focal point is said to be concave. The light bulb is placed 20 cm in front of a concave mirror with a focal length of 8 cm so that the light rays will converge at a point 8 cm behind the mirror.

Explanation:

A concave mirror is a mirror that curves inward, like the inside of a spoon. It has a focal point, which is the point at which parallel rays of light converge after reflecting off the mirror. The light bulb is positioned 20 cm in front of an eight cm-wide concave mirror. This means that the light rays from the bulb will reflect off the mirror and converge at a point 8 cm behind the mirror.

Learn more about concave mirrors here:

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The distance from Earth to the Moon is approximately 384,000 kilometers, aligned with known values over the last few decades and confirmed through various calculation methods including signal transmission times and Kepler's Third Law.

The distance from Earth to the Moon is approximately 384,000 kilometers (km). This can be inferred from the signal transmission duration of 1.28 seconds from Earth to an astronaut on the Moon, using the speed of electromagnetic radiation (which is the same as the speed of light). Considering that light travels at about 299,792 km/s, the distance is calculated as 1.28 s × 299,792 km/s = 383,654.56 km, which rounds up to approximately 384,000 km. This matches option b in the question and correlates with known values for the average distance of the Moon from Earth over the last 45 years. Furthermore, Kepler's Third Law and the month-long lunar orbit reiterate the same approximate distance.

Paved parking lots and roads with concrete or asphalt prevent water infiltration into the ground, causing surface runoff that can lead to floods, pollution, altered water cycles, and erosion.

Paved parking lots and roads made with concrete and asphalt greatly affect the water flow on the land, especially during rainfall. This is due to the impermeability of these materials, which prevents the water from infiltrating or seeping into the ground. Instead, the water becomes surface runoff, rapidly moving across the surface and often causing flash floods, especially in urban areas where these paved surfaces are prevalent.

One environmental effect is the potential for increased pollution. As cars travel, oil and gasoline often leak onto these surfaces. Upon rainfall, these substances are picked up by the surface runoff and can pollute the surrounding areas and water bodies.

This surface runoff also alters the natural water cycle and can affect the local vegetation and soil drainage as the natural filtering capacity of the soil is bypassed. Additionally, in sloped areas, the fast moving water can cause erosion and debris or mud flows.

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The true statement about the free enterprise system is that it allows citizens to own and operate a private business for profit. The correct option is:  It allows the citizen to own and operate a private business for profit.

In a free enterprise system, individuals have the liberty to establish their businesses, make independent economic decisions, and compete in the market without excessive government intervention. This economic model fosters entrepreneurship, innovation, and wealth creation, as individuals are motivated to maximize their profits and meet consumer demands. Unlike a one-class system under state control, the free enterprise system promotes economic diversity and opportunities for social mobility. Citizens can engage in private enterprise, contribute to economic growth, and play an essential role in shaping the economy's direction. Therefore, correct option is:  It allows the citizen to own and operate a private business for profit.

To know more about economic diversity, here

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The pattern of brain waves most conducive to studying new information is the alpha brain wave pattern.

When studying new information, it is important to be in a relaxed yet alert state of mind. The alpha brain wave pattern is associated with this state, which is characterized by a frequency range of 8 to 12 Hz. Alpha waves are typically present when an individual is awake but relaxed, such as during meditation or when daydreaming. This pattern is believed to facilitate the processing of information, enhance memory retention, and promote learning.

In contrast, higher frequency beta waves (13-30 Hz) are associated with active, busy, or anxious thinking, which might not be as effective for absorbing new information. Lower frequency theta waves (4-7 Hz) are linked to drowsiness and light sleep, which are not ideal for focused studying. Therefore, activities that promote alpha wave activity, such as deep breathing or taking short breaks during study sessions, can be beneficial for learning new material.

The correct question is:

Analysis of brain waves according to their frequency by Z. Koudelková, M. Strmiska, R. Jašek.

According to the article, which pattern of brain waves are most conducive to studying new information?

Argon (A) has the smallest atomic radius in the third period of the periodic table due to the increased positive charge from the nucleus as we move across the period.

The element with the smallest atomic radius in the third period of the periodic table is argon (A). Atomic radius refers to the size of an atom, which is determined by the distance between the nucleus and the outermost electron shell. In the third period, as you move from left to right, the atomic radius generally decreases because the number of protons in the nucleus increases, causing a stronger pull on the electrons and reducing the size of the atom.

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