A typical color television draws about 2. 5 A


when connected to an 89 V source.


What is the effective resistance of the T. V.


set?


Answer in units of Ω

your question seems incomplete, I think you are asking the question which is given below.

Question: As the frequency of electromagnetic waves increases, what happens to the wavelength?

when the frequency of an electromagnetic wave increases, its wavelength would decrease, according to eq (i).

speed of light = frequency X wavelength ............(i)

as the speed of light is constant in the same medium.

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The example of velocity from the question is 10 m/s to the right

Velocity is a measure of the rate of change of an object's position with respect to time. It is a vector quantity, which means it has both a magnitude (speed) and a direction.

Mathematically, velocity is defined as the change in displacement (change in position) divided by the change in time:

Velocity = Δ displacement / Δ time

Alternatively, velocity can be expressed as the derivative of an object's position with respect to time:

Velocity = d displacement / d time

the  SI unit of velocity or it is measured in  meters per second (m/s).

Therefore, This statement specifies both the magnitude (10 m/s) and the direction (to the right) of the object's velocity. It indicates that the object is moving at a constant speed of 10 meters per second in the direction of the positive x-axis.

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Answer:

packages proteins

Explanation:

Answer:

The endoplasmic reticulum ( ER) plays a key role in the modification of proteins and the synthesis of lipids. It consists of a network of membranous tubules and flattened sacs. The discs and tubules of the ER are hollow, and the space inside is called the lumen....

Answer:

Explanation:

A simple pendulum consists of a mass (usually represented as a small object or bob) attached to a string or rod of negligible mass. The mass is free to swing back and forth under the influence of gravity.

In the figure, the point of suspension is denoted by "O," and the mass (bob) is represented by the small circle. The string or rod is represented by the vertical line connecting the point of suspension to the bob.

Amplitude:

The amplitude of a pendulum refers to the maximum displacement or swing of the bob from its equilibrium position. In the figure, the amplitude can be represented by the angle formed between the vertical position and the position of the bob when it swings to its maximum distance on one side. It is usually denoted by the symbol "A."

Effective Length:

The effective length of a pendulum refers to the distance from the point of suspension to the center of mass of the bob. It represents the distance over which the mass swings back and forth. In the figure, the effective length can be measured as the length of the string or rod from the point of suspension to the center of the bob. It is usually denoted by the symbol "L."

It is important to note that the amplitude and effective length of a simple pendulum affect its period of oscillation (the time taken for one complete swing). The relationship between these parameters and the period can be described by mathematical formulas.

Overall, the simple pendulum is a fundamental concept in physics and provides a simplified model for understanding oscillatory motion and the principles of periodic motion.

It is important to note that the debate between scientific realism and antirealism is ongoing and complex, with various nuances and perspectives within each position. Different philosophers of science and scientists may hold different views on the nature of scientific terms and their relationship to reality.

According to a scientific realist perspective, scientific terms for unobservable phenomena such as "atom" and "black hole" are seen as referring to entities that truly exist in reality. Scientific realists believe that scientific theories and concepts accurately capture aspects of the world, including unobservable entities and phenomena. They argue that scientific theories provide the best explanation of the natural world and aim to describe the underlying structure and mechanisms of reality.

On the other hand, scientific antirealists hold a different view. They argue that scientific terms that refer to unobservable phenomena do not necessarily correspond to something that exists independently in reality. Antirealists often emphasize the instrumentalist view of science, which suggests that scientific theories are simply tools or frameworks that help us organize and predict observable phenomena, without making claims about the ultimate nature of reality.

Antirealists may argue that scientific theories are subject to revision and change over time as new evidence emerges, suggesting that the terms used to describe unobservable phenomena are not fixed and may not have a one-to-one correspondence with actual entities in reality. They may also highlight the role of social and cultural factors in shaping scientific knowledge, suggesting that scientific terms are influenced by human conventions and interpretations.

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Answer:

D

Explanation:

D, Mass is the amount of matter in an object, it is measured in kg and does not change with gravity. Weight is the effect of gravity on mass, it is measured in Newtons (as it is a force) and changes with gravity. E.g. If you went to the moon your weight would change due to the change in gravity but your mass would stay the same.

Hope this helped!

The speed of the satellite required to remain in a circular orbit around the planet at a distance r can be calculated as v = sqrt(gm/r).

The centripetal force required to keep a satellite in a circular orbit around a planet is provided by the gravitational force between the planet and the satellite. At a distance r from the center of the planet of mass m, the acceleration due to gravity is given as g = Gm/r^2, where G is the gravitational constant.

Equating the centripetal force with the gravitational force, we get mv^2/r = GmM/r^2, where v is the speed of the satellite in the circular orbit. Solving for v, we get v = sqrt(GM/r). Substituting g = Gm/r^2, we get v = sqrt(gm/r).

Therefore, the speed of the satellite required to remain in a circular orbit around the planet at a distance r is given by the square root of the product of the acceleration due to gravity and the distance from the center of the planet, divided by the mass of the planet.

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Answer:

E = V / d       125 V / .018 m = 6940 V/m     electric field

F = E Q       force on Q due to E

F = E n e     where n is the number of electrons in Q

m g = E n e

n = m g / E e     where n is the number of electrons e needed to support drop

n = 1.6 * 10E-16 * 9.8 / (6940 * 1.6 * 10E-19)

n = 1.41

Since n needs to be an integral number of charges, the drop would

not be suspended (motionless under these conditions).

Answer:

true

Explanation:

because the speed at which the object is moving in the circle depends on the effort used

Answer:

1. He feels worse off.

2. His awareness of the grim situation.

Explanation:

Elie Weisel's memoir "Night" is about the persecution of the jews by the Germans during the worst genocide in world history. The events leading up to the Holocaust and the resulting after-effects through his personal experience provides one of the most prominent witness accounts of the crime.

When Weisel states that "lying down wasn't an option", he reveals how congested space was in the cabin. The "lucky ones" were able to breathe in the fresh air from the window, while the rest have to be satisfied with wherever they are. This reveals his realization of the grim situation inside the over-packed cabin, where there is hardly any space to move.

And when he said that they "never ate enough to satisfy our hunger", he presents the realization and understanding of the grim situation in the train's cabin where eating is not a luxury, but a necessity to stay alive. And for that, they know they have to "economize, to save for tomorrow" rather than just stay full once.  

Answer:

1. He feels worse off.

2. His awareness of the grim situation.

Explanation:

Since time cannot be negative in this context, the time when the ball is 5 m below where it left your hand is approximately 1.54 seconds. To find the time when the ball is 5 m below where it left your hand.

h = h0 + v0t + (1/2)gt^2

where:

h is the final height (5 m below the initial height),

h0 is the initial height (0 m),

v0 is the initial velocity (-9 m/s, negative because it's moving downward),

g is the acceleration due to gravity (-9.8 m/s^2, negative because it's acting in the opposite direction of the positive y-axis),

t is the time we want to find.

Substituting the values into the equation, we have:

5 = 0 + (-9)t + (1/2)(-9.8)t^2

Rearranging the equation and setting it equal to zero:

(1/2)(-9.8)t^2 - 9t + 5 = 0

We can solve this quadratic equation to find the value of t. Using the quadratic formula:

t = (-b ± √(b^2 - 4ac)) / (2a)

where a = (1/2)(-9.8), b = -9, and c = 5. Plugging in these values:

t = (-(-9) ± √((-9)^2 - 4(1/2)(-9.8)(5))) / (2(1/2)(-9.8))

Simplifying further:

t = (9 ± √(81 + 98)) / (-9.8)

t = (9 ± √179) / (-9.8)

The two possible values for t are obtained by taking the positive and negative signs in the numerator:

t ≈ 1.54 s or t ≈ -0.59 s

Since time cannot be negative in this context, the time when the ball is 5 m below where it left your hand is approximately 1.54 seconds.

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C. Series

Consider resistors in a circuit - if all the resistors in the circuit are in series and one of the resistors fails then no current can flow thru the circuit,

If the resistors are in parallel then then each resistor experiences the same voltage drop regardless of whether or not any resistor in particular is carrying current.

If the resistors are connected in series, each one will receive the same pd drop, if withstanding if it is carrying current or not.

Option C is correct  Series

A circuit is simply defined as a  channel that must always be followed in order for electricity to flow and perform something good.

In conclusion, if all of the resistors are connected in series, no current can pass through the circuit.

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d. With adiabatic cooling on the leeward slope. Therefore, the correct answer is d, with adiabatic cooling on the leeward slope

Rain shadows occur on the leeward side of mountains, where the air is forced to rise and cool as it encounters the mountain barrier. As the air rises, it undergoes adiabatic cooling, causing moisture to condense and form clouds. This process depletes the air of its moisture content, resulting in a rain shadow effect on the leeward side of the mountain. The descending air on the leeward side of the mountain is dry and warmer, leading to arid or desert-like conditions in those areas. Therefore, the correct answer is d, with adiabatic cooling on the leeward slope.

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The distance between the planes is approximately 644.00 meters at the moment the air traffic controller makes a note about their positions.

For Boeing 747 it is given that:

Altitude: 2500 m

Climbing at 10° above the horizontal and moving 30° north of west.

We can break down the Boeing's motion into components:

1. Horizontal component (x-coordinate):

\(\[x_{\text{Boeing}} = 2500 \tan(10^\circ) \cos(30^\circ)\]\)

2. Vertical component (y-coordinate):

\(\[y_{\text{Boeing}} = 2500 \tan(10^\circ) \sin(30^\circ)\]\)

3. Westward motion (z-coordinate):

\(\[z_{\text{Boeing}} = -2500 \tan(10^\circ)\]\)

So, the position vector of the Boeing 747 relative to the control tower is:

\(\[\vec{r}_{\text{Boeing}} = (x_{\text{Boeing}}, y_{\text{Boeing}}, z_{\text{Boeing}})\]\)

Now let's calculate the values:

\(\[x_{\text{Boeing}} = 2500 \tan(10^\circ) \cos(30^\circ)\\\\ \approx 405.51 \, \text{m}\]\)

\(\[y_{\text{Boeing}} = 2500 \tan(10^\circ) \sin(30^\circ)\\\\ \approx 72.17 \, \text{m}\]\)

\(\[z_{\text{Boeing}} = -2500 \tan(10^\circ)\\\\ \approx -454.66 \, \text{m}\]\)

So,

\(\[\vec{r}_{\text{Boeing}} \approx (405.51 \, \text{m}, 72.17 \, \text{m}, -454.66 \, \text{m})\]\)

For Douglas DC-3:

Given:

Altitude: 3000 m

Climbing at 5° above the horizontal and moving directly west.

1. Horizontal component (x-coordinate):

\(\[x_{\text{DC-3}} = -3000 \tan(5^\circ)\]\)

2. Vertical component (y-coordinate):

\(\[y_{\text{DC-3}} = 3000 \tan(5^\circ) = 3000 \cdot \frac{\tan(5^\circ)}{\cos(90^\circ)}\]\)

The westward motion does not affect the y-coordinate.

So, the position vector of the Douglas DC-3 relative to the control tower is:

\(\[\vec{r}_{\text{DC-3}} = (x_{\text{DC-3}}, y_{\text{DC-3}}, 0)\]\)

Calculating the values:

\(\[x_{\text{DC-3}} = -3000 \tan(5^\circ)\\\\ \approx -261.80 \, \text{m}\]\)

\(\[y_{\text{DC-3}} = 3000 \cdot \frac{\tan(5^\circ)}{\cos(90^\circ)}\\\\ \approx 267.95 \, \text{m}\]\)

So,

\(\[\vec{r}_{\text{DC-3}} \approx (-261.80 \, \text{m}, 267.95 \, \text{m}, 0 \, \text{m})\]\)

Now, let's calculate the distance between the two planes using the Euclidean distance formula:

\(\[d = \sqrt{(x_{\text{Boeing}} - x_{\text{DC-3}})^2 + (y_{\text{Boeing}} - y_{\text{DC-3}})^2 + (z_{\text{Boeing}} - 0)^2}\]\)

Substituting the values and calculating:

\(\[d \approx \sqrt{(405.51 \, \text{m} - (-261.80 \, \text{m}))^2 + (72.17 \, \text{m} - 267.95 \, \text{m})^2 + (-454.66 \, \text{m})^2}\]\)

\(\[d \approx \sqrt{167667.24 + 40631.96 + 206602.27} \approx \sqrt{414901.47} \approx 644.00 \, \text{m}\]\)

Thus, rounding the result to two decimal places: The distance between the planes is approximately 644.00 meters.

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Your question seems incomplete, the probable complete question is:

In the control tower at a regional airport, an air traffic controller monitors two aircraft as their positions change with respect to the control tower. One plane is a cargo carrier Boeing 747 and the other plane is a Douglas DC-3. The Boeing is at an altitude of 2500 m, climbing at 10°above the horizontal, and moving 30° north of west. The DC-3 is at an altitude of 3000 m, climbing at 5° above thehorizontal, and cruising directly west. (a) Find the position vectors of the planes relative to the control tower. (b) What is the distance between the planes at the moment the air traffic controller makes a note about their positions?

Answer:

Explanation:

We shall apply law of conservation of momentum at the time of collision

Momentum before collision of both the pins = 1.8 x 3.6 + 0 = 6.48 kg m/s

Momentum after the collision of both the pins = 1.8 x .54 + 1.8 x v where v is velocity of second pin

So , according to law

6.48 = 1.8 x .54 + 1.8 x v

6.48 = .972  + 1.8 x v

v = 3.06 m /s to the right .

Answer:

im not really sure, sorry

Answer:

The options are not given, so i will answer in a really general case.

There are two equations that describe how mass affects the motion of an object.

The most generical one, Newton's second equation of motion.

This says that:

F = m*a

Force equals mass times acceleration.

Remember that acceleration tells us how the motion of an object changes as time passes.

So if we isolate the acceleration we get:

a = F/m

Here you can see that the mass is in the denominator, so, for a fixed force F, if we increase the mass of the object, the acceleration will decrease, which means that as more mass has an object, "harder" is to accelerate it.

Now from an energy point of view.

The kinetic energy (the motion energy of a moving object) is written as:

T = (1/2)*m*(v^2)

where:

m = mass

v = velocity.

Here, for a fixed velocity v, if we increase the mass, we also increase the kinetic energy.

This means that if we have two objects, one with a small mass m, and the other with a larger mass M, and we want to give both objects the same velocity v, we will need more energy for the object with more mass.

So in general we can conclude that mass "opposes" to the motion.

Now, we also can define the term "testable"

A hypothesis is testable if we can think of an experiment to test it, if there is no experiment, then the hypothesis is not testable.

The time difference between seeing the airplane and hearing it would be:

Time difference = time for light to travel - time for sound to travel

= 0.0000333 s - 29.15 s = -29.15 seconds (approx.)

This negative time difference means that we would hear the sound of the airplane before we see it, since the sound takes longer to reach us than the light.

To calculate the time difference between seeing an airplane and hearing it, we need to determine how long it takes for the sound to travel from the airplane to our ears. We can then subtract this time from the time it takes for the light to travel from the airplane to our eyes.

The distance between us and the airplane is 10,000 meters. Since sound travels at a speed of 343 m/s, we can divide the distance by the speed of sound to get the time it takes for the sound to reach us:

Time for sound to travel = distance / speed of sound = 10,000 m / 343 m/s = 29.15 seconds (approx.)

On the other hand, since light travels at a speed of 300,000,000 m/s, we can divide the distance by the speed of light to get the time it takes for the light to reach us:

Time for light to travel = distance / speed of light = 10,000 m / 300,000,000 m/s = 0.0000333 seconds (approx.)

Therefore, the time difference between seeing the airplane and hearing it would be:

Time difference = time for light to travel - time for sound to travel

= 0.0000333 s - 29.15 s = -29.15 seconds (approx.)

This negative time difference means that we would hear the sound of the airplane before we see it, since the sound takes longer to reach us than the light.

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The net force on the box is  62.04 N.

Force is a push or pulls upon an item due to the object's interaction with some other object. pressure is a strength that may change the movement of an object. A force can cause an object with mass to exchange its speed, i.e., to enhance up. pressure also can be defined intuitively as a push or a pull. A pressure has each importance and route, making it a vector quantity.

Calculation:-

pulling force towards right = 26.36 N

pushing force towards right = 35.68  N

Since the direction of both forces in the same direction

Net force = 62.04 N.

The phrase 'pressure' has a completely unique meaning. At this diploma, it's miles virtually suitable to explain pressure as a push or a pull. Pressure isn't something that an item consists of or 'has in it. Pressure is exerted on one item through any other. The idea of a force isn't restrained to dwelling topics or non-dwelling matters.

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The frequency is the number of waves that traverse a spot in a specific amount of time.

the quantity of times something happens in a certain amount of time. -the number of waves passing a point per second is the frequency of a wave. - The hertz is a measure of frequency ( Hz ). One event occurs every second in a hertz. Shorter wavelengths will equate to lower frequencies if the speed is remained constant.

The frequency of a wave determines its properties. The quantity of waves that pass through a specific spot in a unit of time is known as frequency. Hertz is the S.I. unit for frequency (Hz).

For instance, if a wave travels through a spot in 0.5 seconds, its frequency will be 1 0.5 = 2 Hz.

As a result, two waves will go through that location in a second.

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The equation of GPE is mgH, where m is mass, g is gravitational acceleration, and H is the height.

If we're solving for the change in GPE, then:

∆\(U_{g}\) = mg∆H

Input our given values for m and g:

∆\(U_{g}\) = 0.25 * 9.80 * ∆H

The book falls from 2 meters high to 0.5 meters high, so:

∆\(U_{g}\) = 0.25 * 9.80 * (2.0 - 0.5)

∆\(U_{g}\) = 0.25 * 9.80 * 1.5

∆\(U_{g}\) = 3.675 (J)

Adjust for significant figures:

∆\(U_{g}\) = 3.7 (J)

The change in gravitational potential energy was 3.7 (J)

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(1) Salmon habitat restoration projects are efforts to improve the living conditions for salmon populations in their natural habitats. These projects can involve removing barriers to migration, such as dams, restoring streamside vegetation, and removing invasive species.

Habitat restoration can also include reintroducing native fish species and improving water quality. These efforts are aimed at preserving and strengthening wild salmon populations, which are important for both ecological and economic reasons.

(2) Yellowstone wolves' population protection is a conservation effort focused on preserving and protecting the wolf population within Yellowstone National Park. Wolves were reintroduced to Yellowstone in the 1990s, and their population has grown steadily since then. However, the wolves still face threats from hunting and trapping outside the park boundaries. Conservation efforts include monitoring the wolf population, implementing hunting and trapping regulations, and educating the public about the importance of preserving the wolves.

(3) Ecotourism is a form of tourism that focuses on preserving natural environments and cultural heritage while providing economic benefits to local communities. This type of tourism often involves activities such as hiking, bird watching, and wildlife viewing. Ecotourism operators work to minimize their impact on the environment and to promote conservation and sustainable development. Ecotourism can provide economic benefits to local communities while also promoting conservation and raising awareness about the importance of preserving natural environments.

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Answer:

0.7kg

Explanation:

Given parameters:

Force on the rock  = 8.68N

Acceleration  = 12.4m/s²

Unknown:

Mass of the rock  = ?

Solution:

From newton's second law of motion, the net force on a body is the product of mass and acceleration

  Net force  = mass x acceleration

Now insert the parameters and solve the problem;

         8.68  = mass x 12.4

          mass = \(\frac{8.68}{12.4}\)  = 0.7kg

Answer:

Filiberto experimenta una deceleración de \(2\,\frac{m}{s^{2}}\).

Explanation:

(The problem was written in Spanish. Hence, explanation will be held in Spanish).

Asúmase que Filiberto se distrae por 2 segundos, puesto que un par equivale a dos, y que el vehículo experimenta un aceleración constante. La deceleración experimentada por el vehículo se deriva de la siguiente fórmula:

\(a = \frac{v-v_{o}}{\Delta t}\)

\(a = \frac{40\,\frac{m}{s}-90\,\frac{m}{s} }{2\,s}\)

\(a = -25\,\frac{m}{s^{2}}\)

Filiberto experimenta una deceleración de \(2\,\frac{m}{s^{2}}\).

Answer: set up proportions

Explanation:

The efficiency of the engine is 83.4% assuming  that the

heat capacity is 21 J/K and the universal gas constant is 0.08206 L · atm/mol/K =8.314 J/mol/K.

Efficiency is described as the often measurable ability to avoid wasting materials, energy, efforts, money, and time while performing a task.

The efficiency of the engine is given by:

E = W/Q

where;

W = the work done in the four steps,

Q = the energy input

Since there at four steps in a cycle:

E = w1+ w2 +w3+ w4/ q1+ q2+q3+q4

We calculate that the work done in the first step (isothermal expansion)

n= 1 mole, T1 = 402 K, V2 = 41.2 L, V1 = 18.5 L

We also solve for Steps 2 and 4 are constant volume processes,

We also calculate  work done in the third step (isothermal expansion) is

where;

n = 1 mol, T3 = 273 K, V4 = 41.2 L, V3 = 18.5 L

We notice that Heat enters the system only during steps (1) and (4).

The internal energy of the gas increases in step 4 but no work is done, while the internal energy is constant change in step 1 but work is done by the gas.

Cv =21 J/K, T3 = 273 K, T4 = 402 K

We Solve  for efficiency, ɛ:

ɛ = 2676.01  +0 +0 + 1879.29/ 2676.01  +0 +0 + 2709 = 83.4%.

Therefore, the efficiency of the engine is 83.4%.

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How does the angle of incoming light compare to the angle of light reflecting off of the surface?

For a smooth surface, The angle of reflection and the angle of incidence are equal.