Plsss help me!!!!!!!!!

The resistor of the electric lamp is marked at 240 volts and 60 watts is 960 ohms. Thus, option D is correct.

The resistance is a property that gives obstruction the current flow.  It blocks the current flow in the circuit. The unit of resistance is the ohm.    

From the given,

The voltage of the electric lamp (E) = 240 volt

Power in the circuit (P) = 60 watt

Resistance =?

Power (P) = E² / R

R = E²/P

   = 240×240/60

  = 960 Ω

The resistance of the electric lamp with a given voltage and power is 960 Ω. Thus, the ideal solution is D.

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Answer:

Density is defined as:

Density = Mass/Volume

Now, density is an intensive property, this means that if you have 10 grams of a given material or 1000 grams of the same material, in both cases you will find the same density.

Then a roll of 50 pennies has the same density that a single penny.

The measures of a single penny are:

Mass = 2.5 g

Thickness = 1.52 mm

Radius = 9.525 mm

The coin is a cylinder, and the volume of a cylinder is:

V = pi*r^2*h

where:

pi = 3.14

r = radius = 9.525mm

h = thikness = 1.52mm

The volume is:

V = 3.14*(9.525mm)^2*1.52mm = 433.015 mm^3

The density will be:

D = 2.5g/433.015mm^3 = 0.00577 g/mm^3

Answer:thanks

Explanation:xixo

gv

Answer:

transferred from one object to another. Charged objects can exert forces on other charged ... Electric charge can be measured using the law for the forces between charges

The electric force exerted by the +2 C on another +2 C when at a distance of 25 m is 5.76×10⁷ N

F = Kq₁q₂ / r²

Where

F = Kq₁q₂ / r²

F = (9×10⁹ × 2 × 2) / (25)²

F = 36×10⁹ / 625

F = 5.76×10⁷ N

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Answer:

Vf = 210 [m/s]

Av = 105 [m/s]

y = 2205 [m]

Explanation:

To solve this problem we must use the following formula of kinematics.

\(v_{f} =v_{o} +g*t\)

where:

Vf = final velocity [m/s]

Vo = initial velocity = 0 (released from the rest)

g = gravity acceleration = 10 [m/s²]

t = time = 21 [s]

Vf = 0 + (10*21)

Vf = 210 [m/s]

Note: The positive sign for the gravity acceleration means that the object is falling in the same direction of the gravity acceleration (downwards)

The average speed is defined as the sum of the final speed plus the initial speed divided by two. (the initial velocity is zero)

Av = (210 + 0)/2

Av = 105 [m/s]

To calculate the distance we must use the following equation of kinematics

\(v_{f} ^{2} =v_{o} ^{2} +2*g*y\\\\(210)^{2} = 0 + (2*10*y)\)

44100 = 20*y

y = 2205 [m]

A major romantic poet, John Keats wrote brilliantly, loved hopelessly, and died prematurely. Option C is the correct answer.

The second generation of Romantic poets, which also included Lord Byron and Percy Bysshe Shelley, included the English poet John Keats. When he passed away at the age of 25 from TB, his poetry had been published for less than four years. Option C is the correct answer.

During his lifetime, they were not well accepted, but upon his passing, his renown soared. His inclusion in the English literary canon by the century's conclusion had a significant impact on several Pre-Raphaelite Brotherhood authors. Particularly in the series of odes, Keats' style was "heavily loaded with sensualities." He used natural images, as was typical of Romantics, to emphasize intense emotion. He continues to have some of the most widely read and studied poetry and letters in English literature today.

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"The complete question is, "Choose the correct answer. A major Romantic poet, John Keats wrote brilliantly, loved hopelessly,

A. and who died prematurely.

B. and he died prematurely.

C. and died prematurely.

D. and at a premature age died."

Directly proportional is: energy and frequency; Inversely proportional: wavelength and energy and frequency and wavelength.

(a) The wavelength and energy are inversely proportional to each other. This implies that as the wavelength of a wave increases, its energy decreases, and as the wavelength decreases,  energy increases.

(b) The frequency and wavelength are inversely proportional to each other. This implies that as  frequency of a wave increases, its wavelength decreases, and as frequency decreases, wavelength increases.

(c) Energy and frequency are directly proportional to each other. This implies that as frequency of a wave increases, its energy also increases, and as frequency decreases, energy decreases.

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Astronomers can characterize a planet's atmosphere in absorption via Optioin d. astrometry and the doppler method

For transiting planets, astronomers can obtain valuable information about the atmosphere, surface temperature, and size of the planet. For most Sun-like stars, an orbiting planet that is itself the size of a brown dwarf only reduces the star's brightness to a few percent or less during transit.

Most known exoplanets have been discovered using the transit method. A transit occurs when a planet passes between a star and its observer. As Venus or Mercury moves between us and the Sun, transits within the solar system can be observed from Earth.

A transiting exoplanet's atmosphere can be observed backlit by the star as it passes its host star. Additional atmospheric observations can be made by watching exoplanets disappear and reappear behind their stars.

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Disclaimer:- your question is incomplete, please see below for the comlete question.

Astronomers can characterize a planet's atmosphere in absorption via group of answer choices

a. transits only

b.  transits and the doppler method

c. the doppler method direct imaging

d. astrometry and the doppler method

The momentum of the probe after the retrorocket ceases to fire is 9.9 * 10^7 Kg m/s

We know that the momentum of an object has to do with the product of the mass and the velocity of an object. The momentum of an object is a vector quantity and the direction of the momentum is the direction of the velocity of the object that is in motion.

According to the Newton second law of motion, we know that the rate of change of the momentum is equal to the impressed force that is acting on the body.

We know that;

\(F_{t}\) = \(p_{f}\) -\(p_{i}\)

F = force

t = time taken

\(p_{f}\)= final velocity

\(p_{i}\) = initial velocity

\(p_{f}\) = \(F_{t}\)  + -\(p_{i}\)

\(p_{f}\) = (2.0 * 10^6 * 12 s) + 7.5 * 10^7

\(p_{f}\)  = 2.4 * 10^7 + 7.5 * 10^7

\(p_{f}\)  = 9.9 * 10^7 Kg m/s

Hence, the momentum of the retrorocket is 9.9 * 10^7 Kg m/s.

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Missing parts;

A  space probe is traveling in outer space with a momentum that has a magnitude of  7.5 * 10^7 kgm/s. A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of 2.0  * 10^6 N and a direction opposite to the probe's motion. It fires for a period of 12 s. Determine the momentum of the probe after the retrorocket ceases fire.

Each image was focused on the retina because the sclera altered the lens's shape, which also altered its focal length.

The retina is the tissue layer at the rear of the eyeball that is light-sensitive. The retina receives the images that pass through the eye's lens. The retina subsequently transforms these images into electric signals, which it then transmits to the brain via the optic nerve. Within the eye, the retina is a layer of photoreceptor and glial cells that collects incoming photons and transfers them through neural pathways as electrical and chemical signals so the brain may see a visual image. tissue that is sensitive to light and lines the back of the eye. It has millions of photoreceptors, including rods and cones, which change light rays into electrical impulses and transmit those signals to the brain via the optic nerve.

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Answer:

there is no context??????

The amplitude of a wave is proportional to the amount of energy it carries. When the amplitude of a wave is increased, the energy carried by the wave also increases. This can result in several potential outcomes, depending on the specific wave system being considered.

In mechanical wave systems, such as a vibrating string or a loudspeaker, using very large amplitude can cause the system to become nonlinear, meaning that the wave behavior deviates from the expected linear relationship between the wave amplitude and energy. Nonlinearities can cause the wave to generate harmonics, which are higher frequency components in the wave spectrum. They can also cause the wave to become distorted, producing a sound that is different from the original waveform. In extreme cases, the system can become mechanically unstable and break or stop functioning altogether.

In electromagnetic wave systems, such as radio waves or light waves, very large amplitudes can cause similar nonlinear distortions. They can also cause unwanted interference with other signals in the system, as well as increase the risk of damage to the transmitting or receiving equipment.

It is important to use appropriate amplitudes for the specific wave system being considered, as excessive amplitudes can result in unwanted side effects and potentially cause damage to the system.

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One similarity in the spectra of T dwarf stars and giant planets in our solar system is that their spectra show: "Indications of methane"

The solar system is made up of planets, moon, asteroids, comets, dust, and gas that revolve around the sun, which is our nearest star.

It consists of the giant planets Jupiter and Saturn, the ice giant Uranus and Neptune, and the rocky core planets Mercury, Venus, Earth, and Mars.

Some key points of solar system are-

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Boring referred to Fechner as the "inadvertent founder of psychophysics" because c. Fechner was more interested in destroying materialism than in establishing a science.

Boring's statement suggests that Fechner's primary motivation was not to establish a scientific field like psychophysics but rather to challenge or disprove materialism.

Fechner's work in psychophysics involved studying the relationship between physical stimuli and the psychological sensations they evoke.

However, Boring suggests that Fechner's interest in this field was driven by his philosophical stance against materialism rather than a deliberate intention to establish psychophysics as a scientific discipline.

According to Boring, Fechner's designation as the "inadvertent founder of psychophysics" implies that Fechner's primary focus was not on establishing psychophysics as a scientific field but rather on challenging materialism.

While Fechner's work in psychophysics became influential, Boring suggests that Fechner's initial motivations were rooted more in philosophical concerns than in establishing a new scientific discipline.

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Explanation:

simply add the length

10+21 = 31

distance is the distance travelled by an object

for displacement, its gonna be the length between the beginning point and end point which mean u need to substract 21 and 10.

so distance, u just need to add

The height of the ceiling at the center of the whispering gallery is approximately 43.3 feet.

In an ellipse, the sum of the distances from any point on the ellipse to its two foci is constant. In this case, the two foci are located 25 feet from the center of the hall.

Given that the hall is 100 feet in length, the distance from one end to the center is 50 feet. We can consider this as the semi-major axis (a) of the ellipse.

The sum of the distances from any point on the ellipse to its two foci is equal to 2a. Thus, the sum of the distances from the ceiling at the center of the hall to the two foci is also 2a.

Since the foci are located 25 feet from the center, the sum of the distances is 2a = 50 feet.

To find the height of the ceiling at the center, we need to determine the semi-minor axis (b) of the ellipse. The semi-minor axis can be calculated using the formula:

b = √(a² - c²)

where c represents the distance from the center to each focus. In this case, c = 25 feet.

Substituting the values into the formula:

b = √(50² - 25²)

b = √(2500 - 625)

b = √(1875)

b = 43.3 feet

Therefore, the height of the ceiling at the center of the whispering gallery is approximately 43.3 feet.

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Answer: B

Explanation: it is perpendicular to a surface

Answer:

it is perpendicular to a surface

Explanation:

Klay Thompson and Draymond Green wanted to play a joke on Steph Curry. Kay threw a balloon horizontally at 50 m/s from a 150 m high bridge, then the balloon would have landed 276.5 meters away.

There are three equations of motion given by Newton,

v = u + at

S = ut + 1/2 × a × t²

v² - u² = 2 × a × s

By using the second equation of the motion,

S = ut + 1/2 × a × t²

150 = 0 + 0.5 × 9.8 ×  t²

t² = 150 / 4.9

t = 5.53 seconds

The horizontal displacement of the balloon = 50 × 5.53

                                                                        = 276.5 meters

Thus, the balloon would have landed 276.5 meters away.

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1 hecto gram = 100 grams

1 gram = 100 centi grams

combine two.

1 hecto gram = 100 × 100 centi grams

1 hecto gram = 10000 centi grams

200 hecto grams = 200 × 10000 centi grams

200 hecto grams = 2000000 centi grams

The statement "The government (FCC) regulates the frequencies in the electromagnetic spectrum that can be used for wireless communication" is true.

The government, specifically the Federal Communications Commission (FCC) in the United States, regulates the frequencies in the electromagnetic spectrum that can be used for wireless communication.

The electromagnetic spectrum encompasses a wide range of frequencies, from radio waves to microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. The FCC allocates and manages these frequencies to ensure efficient and coordinated use of the spectrum by various wireless communication devices, including cell phones, Wi-Fi routers, radios, and other wireless technologies.

By regulating the spectrum, the FCC aims to prevent interference between different wireless devices and ensure reliable and secure communication. These regulations help in maintaining order, maximizing spectrum utilization, and promoting fair access to wireless communication resources.

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Complete question :

The government (FCC) regulates the frequencies in the electromagnetic spectrum that can be used for wireless communication. T/F

Answer:

yes

Explanation:

All Motion is relative to a reference point. Object appears to move whether object moves, the reference point moves, or both move. is the distance traveled by an object over the period of time in which it moved. Ex - a racecar driver completes a three-mile lap in 60 seconds.

The statement "All Motion is relative to a reference point." is True.

An inertial frame of reference is a frame of reference in which the Newton's laws are valid. In this frame of reference, the objects do not accelerate without any external force. All frames of reference moving with constant velocity are considered stationary.

In a non-inertial frame of reference, the Newton's laws will not work. They are moving with an acceleration.

All Motion is relative to a reference point. Object appears to move, the reference point moves, or both move is the distance traveled by an object over the period of time..

Thus, the statement "All Motion is relative to a reference point." is True.

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147,000 km is the distance from saturn inside which a moon would be tornapart by tidal forces.

In our solar system, Neptune is the planet that is most distant from the sun, but there are other minor planets that are also quite far away, including Pluto.

In reality, during 20 years out of its 249-year orbit, Pluto is further from the sun than Neptune is because its orbit is a far more elongated elliptical than those of the other planets.

Pluto has officially been dubbed a "dwarf planet" by the IAU since it has no longer "cleared its neighbouring area of various items." This means that, unlike the other planets, Pluto still has a large number of asteroids and other space rocks in its orbit rather than having absorbed them over time.

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(a) According to the graph, neither object A nor object B has a decreasing speed during the time interval shown. This can be inferred from the graph, as the slope of the line representing the velocity of both objects is always positive (going upwards) and never negative (going downwards).

(b) According to the graph, the objects are never moving at the same speed during the time interval shown. This can be inferred from the graph, as the lines representing the velocity of the two objects never intersect, indicating that they are never at the same point on the graph at the same time.

(c) According to the graph, the magnitude of the net work done on object A is greater than that on object B for the time interval shown. This can be inferred from the graph, as the area under the line representing the velocity of object A is greater than that of object B.

(d) The net work done on an object is equal to the force applied to the object multiplied by the distance it moves in the direction of the force. From the graph, it can be seen that object A has a greater velocity than object B for the entire time interval shown, which means that it covers a greater distance in the same amount of time, and therefore the net work done on object A is greater than that on object B. This can be seen by the area under the velocity graph, the area under the graph of object A is greater than that of object B. This means that the force applied to object A is greater than that applied to object B, and that the net work done on object A is greater than that on object B.

In physics, velocity is the rate of change of an object's position with respect to time. To calculate velocity, you need to know the initial position of the object, the final position of the object, and the time it took for the object to move from the initial position to the final position. Once you have this information, you can use the following formula to calculate velocity:

Velocity = (Final position - Initial position) / Time

The unit of velocity is typically meters per second (m/s) or kilometers per hour (km/h).

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The Correct option is D. Earth's Moon, by Sir Isaac Newton object appears in these sketches — drawn as seen through one of the first telescopes, in the early 17th century.

Isaac Newton is widely regarded as one of the most influential physicists in history. He made groundbreaking contributions to our understanding of the laws of motion, gravity, and optics, which laid the foundation for modern physics.

Newton's three laws of motion describe how objects move in response to forces, while his law of universal gravitation explains how all objects in the universe are attracted to each other. His work on optics included the development of the reflecting telescope and the discovery of the composition of white light through the use of prisms.

Newton's contributions to physics were based on his careful observations and mathematical analysis, which allowed him to formulate precise laws that could be used to make predictions about the behavior of physical systems.

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The latent heat of fusion is 335714.29 J/kg.

To calculate the latent heat of fusion, we can use the equation:

Q = m * L

Where:

Q = heat energy transferred

m = mass of the substance

L = latent heat of fusion

Given:

Mass of water (m) = 700 g = 0.7 kg

Heat energy transferred (Q) = 235200 J

To find the latent heat of fusion (L).

Since the water is being transformed into ice, we know that the heat energy transferred during this phase change is equal to the latent heat of fusion.

Rearrange the equation to solve for L:

L = Q / m

L = 235200 J / 0.7 kg

L ≈ 335714.29 J/kg

Therefore, the latent heat of fusion is approximately 335714.29 J/kg.

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Diameter of the football players' piston if the football players are held to a height 0.800 m above the cheerleader is 53 cm

mass of the cheerleader is, m1=51.0kg

mass of each football player is, m2=110kg

diameter of the piston for cheerleader is, d1=18.0cm=0.18m

W1=m1g

W1=51.0kg×9.8m/s²

W1=500.31N

W2=4316.4N

P1=W1/(π/4d1²)

P1=500.31N/(π/4×(0.18m)²

P1=19660.94Pa

P2=5495.81/d2²Pa

P1=P2

19660.94Pa=5495.81/d2²Pa

d2=0.53 m

d2=53cm

so, the diameter of the football players piston is 53cm

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