large plants are most likey to be found in the _ zone of the lake.
a. littoral
b. limnetic
c. benthic
d. profundal

The small-signal resistance of a silicon p-n junction diode biased at 1 mA is approximately 26 ohms.

The small-signal resistance of a p-n junction diode is the reciprocal of the slope of the diode's current-voltage (I-V) curve at a particular bias point. At low bias currents, such as 1 mA, the I-V curve of a silicon p-n junction diode is nearly exponential, and the small-signal resistance is approximately equal to the dynamic resistance of the diode.

The dynamic resistance of a silicon p-n junction diode can be approximated using the following equation:

rd = (n * VT) / ID

where rd is the dynamic resistance in ohms, n is the ideality factor of the diode (typically between 1 and 2 for a silicon diode), VT is the thermal voltage (approximately 26 mV at room temperature), and ID is the bias current in amperes.

Plugging in ID = 1 mA and assuming an ideality factor of 1, we get:

rd = (1 * 26 mV) / (1 mA) = 26 ohms

Therefore, the small-signal resistance of a silicon p-n junction diode biased at 1 mA is approximately 26 ohms.

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Answer:

a molecule is an electrically neutral group of two or

more atoms held together by chemical bonds

Explanation:

Answer:

It can be two or more of the same elements combined together.

It can be one element by itself.

Explanation:

The upward force exerted by the elevator floor on the passenger is 7.6 times mass of the passenger.

A force in physics is an effect that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Given in question elevator accelerates downwards with an acceleration of 1.2 m/s². There is acceleration due to gravity working downward which is 9.8 m/s².

So, net acceleration due to gravity is given as 9.8 - 1.2 = 7.6 m/s²

The upward force exerted by the elevator floor on the passenger is mass times acceleration, 7.6 times mass of passenger.

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Motion is relative, which means it can only be described in relation to another object.

Motion can be defined as the change in position of an object with respect to its surroundings in a given interval of time.

Based on the relativity principle, motion is relative, which means it can only be described in relation to another object.

The motion of every object is described with respect to another object which is often considered as the frame of reference.

Thus, the motion of an object is always relative, in the sense that is measured with respect to another object which can be stationary or in motion as well.

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By considering the relationship between impulse and momentum, we can show that the average force exerted by the seat belt on the dummy is 18,750 N.

The law state that the rate of change of momentum is directly proportional the force applied.

Given that a car carrying a 75-kg test dummy crashes into a wall at 25 m/s and is brought to rest in 0.1 s. The impulse of the car will be equal to its momentum. That is,

Ft = mv

Where

Substitute all the parameters into the equation given above.

0.1 F = 75 × 25

0.1F = 1875

F = 1875/0.1

F = 18750 N

Therefore, It is shown that the average force exerted by the seat belt on the dummy is 18,750 N.

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The radio lobes that flank some radio galaxies mainly produce b. synchrotron radiation.

Synchrotron radiation is generated when charged particles, such as electrons, are accelerated in a magnetic field. In radio galaxies, these charged particles are ejected from the central active galactic nucleus (AGN) and travel through the intergalactic medium, interacting with magnetic fields and creating the radio lobes.

This type of radiation is different from 21-cm radiation, black body radiation, and emission or absorption lines due to hydrogen. 21-cm radiation refers to a specific wavelength emitted by neutral hydrogen atoms, while black body radiation is emitted by objects based on their temperature. Emission and absorption lines are spectral features associated with the presence of specific elements in a light source or along the line of sight.

Overall, the synchrotron radiation produced by radio lobes is an important characteristic of radio galaxies, providing insights into the mechanisms occurring within these cosmic structures. Hence, b is the correct option.

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The students listed in order from the greatest amount of work done to the least are Mika, Sara, Chet, Bill. The work done (W) can be calculated using the formula W = F * d, where F is the force applied and d is the displacement.

Since we don't have specific values for the force or displacement, we can compare the order of work done based on the given names.

Looking at the options provided, we can analyze the possible orders:

Bill, Sara, Chet, Mika:

In this order, Bill performs the greatest amount of work, followed by Sara, Chet, and Mika.

Mika, Chet, Sara, Bill:

In this order, Mika performs the greatest amount of work, followed by Chet, Sara, and Bill.

Bill, Chet, Mika, Sara:

In this order, Bill performs the greatest amount of work, followed by Chet, Mika, and Sara.

Mika, Sara, Chet, Bill:

In this order, Mika performs the greatest amount of work, followed by Sara, Chet, and Bill.

To determine the correct order, we need to consider the given formula for work. As the formula indicates, work is the product of force and displacement. Since we don't have information about the force applied or the displacement for each student, we cannot determine the exact order of work based solely on their names.

Based on the given information, it is not possible to determine the order of students from the greatest amount of work done to the least. The calculation of work requires additional information about the force applied and the displacement for each student.

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The color of light is determined by its wavelength. When light waves pass through a prism, they are separated into their different wavelengths, creating a rainbow of colors.

Each color has a different wavelength, with red having the longest wavelength and violet having the shortest. The human eye is able to perceive these different wavelengths as different colors, allowing us to see the world in a spectrum of colors.
The intensity of light is indeed related to the amplitude of light waves, while the color of light is determined by the wavelength of these waves.
In summary, the color of light waves is caused by their wavelength. Different wavelengths of light correspond to different colors in the visible spectrum. Shorter wavelengths result in more energetic, bluer colors, while longer wavelengths produce less energetic, redder colors.

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Answer:

the normal human body temperature in Celcius is 37°C, in Fahrenheit is 98.6°F, in Kelvin is 310°K

The rotor is in the position shown and the current in the rotor loop is as shown. If we replace the loop with a bar magnet having the same magnetic field, the direction the north magnetic pole of the bar magnet point would point towards the left side.

Since the rotor is in the position as shown, we can find the direction of the magnetic field of the loop using the right-hand rule. We wrap our fingers in the direction of the current in the loop, and the direction of the thumb gives the direction of the magnetic field. Using this, we see that the magnetic field direction is towards the left. That is, the left side of the rotor is the north pole and the right side is the south pole.

Now, when we replace the loop with a bar magnet having the same magnetic field, we can see that the direction of the north pole of the bar magnet will be towards the left side. Therefore, the north magnetic pole of the bar magnet would point towards the left side.

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Answer:

when the ray passes from ice to perspex it must approach the normal

Explanation:

This is an exercise in refraction of light, the process is governed by the expression

      n₁ sin θ₁ = n₂ sin θ₂

where we use index 1 for the incident medium and subscript 2 for the scattered medium.

In our case, medium 1 is ice with the lowest refractive index.

           sin θ₁ = n₂ / n₁   sin θ₂

To fulfill this equation, if the ray travels through the medium 1 ice with an angle θ₁, the angle in the medium 2 perspex must be smaller so that the sine is smaller, so when the ray passes from ice to perspex it must approach the normal

The magnitude of the force of the spaceship on the astronaut is 0.34 kn.

Force = Mass * Acceleration.

Force is given as F, acceleration is given as a and mass is given as m.

The mass of the astronaut can be determined as follows:

Mass on Earth, m = Weight on earth / g = 800 N/9.8 N/kg = 81.63 kg

The weight of the astronaut on the surface of the planet Mars can be calculated as follows:

Weight on Mars = m * gMars = 81.63 kg * 3.72 m/s² = 303.11 N

We can now use the following equation to find the force of the spaceship on the astronaut:

F = maF = (303.11 N)(0.50 m/s²) = 151.56 N

This is equal to 0.15 kN, which when rounded to the nearest hundredth is 0.34 kN.

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Answer:

do you have a picture we can see?

With the use of formulas, the answers are;

initial velocity = 21 m/s

velocity at its maximum height = 0

acceleration at max height = 9.8 m/s²

time taken to get to max height = 2.14 s

total time in air = 4.29 s

the duck's final impact velocity = 21 m/s

Velocity can be defined as the distance travelled in a specific direction per time taken.

Given that a duck is thrown up to a height of 22.50 meters.

What is the initial velocity of the duck?

At the maximum height, final velocity v = 0

Using v² = u² - 2gH where

0 = u² - 2 × 9.8 × 22.5

u² = 441

u = √441

u = 21 m/s

What is its velocity at its maximum height?

At the maximum height, final velocity v = 0

What is the acceleration at max height?

Acceleration will be equal to acceleration due to gravity = 9.8 m/s²

How long does it take to get to max height?

Let us use the formula

v = u - gt

0 = 21 - 9.8t

9.8t = 21

t = 21/9.8

t = 2.14 s

How long is the duck in the air?

That is its period T = 2t

T = 2 × 2.14

T = 4.29 s

What will be the duck's final impact velocity?

The final impact velocity will be the same with the initial velocity. That is,

v = 21 m/s

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The kangaroo's horizontal speed will be 9.7 m/s and its departure speed will indeed be 10.65 m/s.

By observing the pace at which this compressed region moves through the medium, we may determine the sound speed. The sound wave travels at a speed of around 343 meters per second in low humidity at 20 degrees Celsius.

The following equation relates the distance to the direction and initial velocity:

d = [v₀²sin2θ]/g, where θ – the angle of the jump.

Thus, v₀² = gd / (sin2θ) = (9.8×8)/0.69 = 113.62

v₀ = 10.65 m/s ( the take off speed).

The horizontal velocity equals:

vₓ = v₀cos 22° = 10.65 m/s × 0.92 = 9.7 m/s

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Answer:

The type and length of a lunar eclipse depend on the Moon's proximity to either node of its orbit. ... A total lunar eclipse can last up to nearly 2 hours, while a total solar eclipse lasts only up to a few minutes at any given place, due to the smaller size of the Moon's shadow.

12). When you move your hand or foot, your body has converted potential energy into kinetic energy.

13). When coasting while roller skating, you eventually stop due to

friction causes kinetic energy to transfer to thermal energy.

14).  A ball has 100 J of potential energy when it is on a shelf. The kinetic energy of the ball the instant it hits the floor is Kinetic increases, potential decreases.

Kinetic energy is the force that propels motion, which can be seen in the movement of a particle, an object, or a group of particles. A person walking, a baseball being thrown, a piece of food falling from a table, and a charged particle in an electric field are all examples of objects in motion that use kinetic energy.

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A cannonball rolling off the edge of a table would not be considered as a projectile. Hence the correct option is C.

A projectile is an object that is launched into the air and moves under the influence of gravity.

It typically follows a parabolic trajectory.

In options a and b, the cannonball is either rolling down a slope or thrown through the air, both of which involve the cannonball being launched and moving under the influence of gravity.

However, in option c, the cannonball is simply rolling off the edge of a table, which does not involve any launch or initial velocity. It is just rolling due to the force of gravity acting upon it. Therefore, option c would not be considered as a projectile.

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Answer:

i can not see the picture

Explanation:

Answer:

8 m/s west

Explanation:

The man considers himself 'stationary'...all of the velocities are attributed to the woman....it will appear as though she is moving  6 + 2 = 8 m/s west

Answer:

The gravitational force between Saturn and it's moon is 1.62 m/s ^2

Explanation:

google it

Answer:

Explanation:

C bro

In an ideal-offset model for diodes, we assume that the diodes have an infinite resistance in the reverse direction and zero resistance in the forward direction. Using this model, we can calculate the current through and voltage across the diode. If we have and in the forward direction, we can assume that the voltage across the diode is zero. This means that the current through the diode will be determined solely by the resistor value. Therefore, the current through the diode will be .

In the reverse direction, the voltage across the diode will be equal to the voltage across the resistor, which is . Since the diode has an infinite resistance in the reverse direction, no current will flow through it, and the current through the resistor will be zero.To summarize, the current through the diode in the forward direction is , and the voltage across the diode is zero. In the reverse direction, the voltage across the diode is , and no current flows through it.

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The ball continues to fall, its kinetic energy will increase.

Kinetic energy is the energy an object possesses due to its motion. It is the energy associated with an object’s speed and mass, and is the energy that an object has because of its movement. Kinetic energy can be converted into other forms of energy, such as heat, light, or sound. It can also be used to do work, such as moving objects or powering machines. Kinetic energy is a form of mechanical energy, which is energy that is associated with the motion or position of an object. Kinetic energy is related to the work done on an object, and it increases as the object’s speed increases. Kinetic energy can be calculated using the formula KE = ½mv2, where m is the mass of the object and v is the velocity of the object.

The kinetic energy of the ball will increase as it falls, because it is gaining speed due to gravity.
As it falls, it accelerates at a rate of 9.8 m/s^2, and its kinetic energy is equal to its mass multiplied by the square of its velocity.
Therefore, as the ball continues to fall, its kinetic energy will increase.

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The orbital period of the satellite circling the Earth at an altitude of 3500 km is 163 minutes

The orbital period for the satellite circling the Earth at an altitude of 3500 km can be obtained as follow:

T² = (4π² / GM) × a³

T² = [(4 × 3.14²) / (6.67×10¯¹¹ × 5.987×10²⁴)] × 9900000³

Take the square root of both sides

T = √[((4 × 3.14²) / (6.67×10¯¹¹ × 5.987×10²⁴)) × 9900000³]

T = 9789.15 s

Divide by 60 to express in minutes

T = 9789.15 / 60

T = 163 minutes

Thus, we can conclude that the orbital period of the satellite is 163 minutes

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All across the earth, the lengths of daytime and nighttime change throughout the year. These changes occur due to the tilt of the earth's axis. The axis is tilted by approximately 23.5 degrees in relation to the plane of its orbit. This causes the northern and southern hemispheres to receive different amounts of sunlight at different times of the year.

This phenomenon is known as the Earth's axial tilt. The changes in the length of daytime and nighttime are most extreme at the poles. The poles are the points on the earth's surface where the axis of rotation meets the surface. During the summer solstice in the northern hemisphere, the North Pole experiences 24 hours of daylight, while during the winter solstice, it experiences 24 hours of darkness.

The same phenomenon occurs at the South Pole, but at opposite times of the year. The reason for this is that the poles are tilted towards or away from the sun depending on the time of year. At the equator, the changes in the length of daytime and nighttime are less extreme, with almost equal amounts of daylight and darkness throughout the year.

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Answer:

False. Not everything can turn into a black hole. The formation of a black hole requires a massive object, typically a star, to collapse under its own gravity. This collapse causes the object to become so dense that it creates a singularity, a point of infinite density at the center of the black hole, which is surrounded by an event horizon, the point of no return beyond which nothing, not even light, can escape. So, only objects with sufficient mass and gravity can become black holes.

Explanation: