Which light packs the highest energy per photon? 1. infrared 2. red 3. blue 4. ultraviolet 5. green?

Answer:

A

Explanation:

It would be a cluster because that's what it is. A cluster of galaxies. a Universe is far to big. And a constellation and solar systems would be inside universes.

the answer is a, a light year. Hope this helped!

Electrical things in parallel are typical of circuit elements in homes.

Electrical things in series are not typical of circuit elements in homes.

Every electrical thing in a house is in parallel.  Sometimes they're also in parallel with the electrical devices in other houses nearby. 

Answer:

A nuclear to thermal and radiant

Explanation:

Nuclear fission is the disintegration of the force that holds the nucleus of the atom together, creating two different but lighter nuclei.

In nuclear fission, it seeks to break the force of attraction or nuclear force that joins the protons and neutrons that form the nucleus of an atom. Neutrons without electric charge are used against the nucleus of the atom to produce enough excitation energy to deform the nucleus into two halves.

The nuclei obtained from nuclear fission are different and lighter than the initial nucleus. The excess energy that emerges from nuclear fission is what is known as nuclear energy.

Nuclear fission produces energy in the form of heat and other radiations releasing (ie thermal and radiation in general), in turn, other neutrons. Each generated neutron collides with the other nuclei created, producing a chain reaction.

Nuclear fission can be used for power generation through a nuclear reactor. A nuclear reactor is a facility that generates self-sustained and controlled nuclear reactions, and uses the energy released from the fission of atoms.

For example, one of the first applications of nuclear fissions used uranium atoms to produce electricity.

Using Ohm's Law (I = V/R), the current through a light bulb connected to a 120 V outlet with a resistance of 30 Ohms is calculated as 4 amps.

The current through a circuit with a light bulb connected to a 120 V outlet can be calculated using Ohm's Law, which states that current (I) equals voltage (V) divided by resistance (R).

Given that the resistance of the bulb is 30 Ohms (30), the current can be found using the formula I = V/R. Substituting the provided values, we get I = 120 V / 30 = 4 amps. Therefore, the current through the circuit is 4 amps.

To answer the initial question:

If a light bulb is connected to a 120 V outlet and the resistance of the bulb is 30 Ohms, the current through the circuit is 4 amps, not 3600 amps, 150 amps, or 0.25 amps.

As per Newton's law of cooling we know that

[tex]\frac{\Delta T}{dt} = k(T_avg - T_s)[/tex]

in 5 hours the body temperature becomes 79.6 from 84.4

while the surrounding temperature is given as 68 degree F

now from above formula

[tex]\frac{84.4 - 79.6}{5} = k (\frac{84.4 + 79.6}{2} - 68)[/tex]

[tex]0.96 = k(14)[/tex]

now let say the person died "t" time ago

now we will have

[tex]\frac{98.6 - 84.4}{t} = k (\frac{98.6 + 84.4}{2} - 68)[/tex]

[tex]\frac{14.2}{t} = k(23.5)[/tex]

[tex]\frac{14.2}{t} = \frac{0.96}{14}(23.5)[/tex]

[tex]t = 8.8 hours = 9hours (approx)[/tex]

so he died at approx 5 Am in  morning

It would take the car 4.6 seconds to accelerate from 0 to 62.0 mph at full power, neglecting friction and air resistance.

We can use the following equation to calculate the acceleration of the car:

[tex]a = \dfrac{v_f - v_i}{t}[/tex]

where:

a is the acceleration of the car (in m/s²)

v_f is the final velocity of the car (in m/s)

v_i is the initial velocity of the car (in m/s)

t is the time it takes for the car to accelerate (in seconds)

We know that the final velocity of the car is 62.0 mph, which is equal to 28.3 m/s. The initial velocity of the car is 0 m/s. We need to solve for the time it takes for the car to accelerate, so let t be represented by the variable x.

[tex]a = \dfrac{28.3 m/s - 0 m/s}{x}a = \dfrac{28.3 m/s}{x}[/tex]

We also know that the acceleration of the car is equal to the force exerted on the car divided by the mass of the car. The force exerted on the car is the power of the car, which is 5000 hp. The mass of the car is 1500 kg.

[tex]a = \dfrac{F}{m}\dfrac{28.3 m/s}{x} = \dfrac{5000 hp}{1500 kg}x = \dfrac{28.3 m/s \cdot 1500 kg}{5000 hp}x = 4.6 seconds[/tex]

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Final answer:

The polarity of Earth's magnetic field has reversed multiple times in the geologic past, with these reversals occurring at irregular intervals. Scientists study magnetic characteristics of rocks to understand this phenomenon, which significantly impacts our interpretation of Earth's magnetic history.

Explanation:

In the geologic past, the polarity of Earth's magnetic field has experienced numerous reversals where the magnetic north pole moved to the geographic south pole and vice versa. This phenomenon is known as magnetic reversal. By analyzing the magnetic characteristics of volcanic rocks and other geological formations, scientists have been able to identify periods of normal and reversed magnetism.

During periods of reversed polarity, a compass would have pointed towards what is today considered the geographic south instead of the north, indicating a complete reversal of Earth's magnetic field. These reversals have occurred at irregular intervals throughout Earth's history, ranging from less than 0.1 million years to as much as 50 million years, with the most recent significant event, the Brunhes-Matuyama reversal, happening about 780,000 years ago.

Basically, when water evaporates, it always absorbs energy. What happens is that a molecule steals surface energy for all molecules until it is hot enough to evaporate. This is how the evaporation process happens. For this reason, the surface cools because the molecules steal the heat from the medium. This can easily be noticed when we sweat and after the water molecules evaporate from our body, it cools.

The water feels cool when it evaporates because the process of evaporation requires energy, and that energy is drawn from the surrounding environment, including our skin.

When water molecules evaporate, they transition from the liquid phase to the gas phase, escaping the surface of the water. During this phase transition, water molecules gain energy from their surroundings to overcome the intermolecular forces holding them together in the liquid. This energy absorption leads to a cooling effect on the surrounding environment.

When water evaporates from our skin, it draws heat energy from our body, which makes us feel cooler.

Overall, the cooling sensation when water evaporates is a result of energy transfer, where the water molecules gain energy from their surroundings, leading to a cooling effect on the surrounding objects or our bodies.

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Answer:

The correct answer would be b.  Climate and temperature can affect an individual’s attitude toward survival.

Climate and temperature play an important role in the survival of an organism.  Every organism or species requires optimum physical and chemical conditions such as temperature, pressure, pH et cetera.

Very high or very low temperature can cause death of an organism. For example, global warming has raised the temperature and salinity of the oceans due to which many marine organisms have died.

Answer:

Energy stored in the capacitor is 0.0018 joules.

Explanation:

It is given that,

Capacitance of the capacitor, [tex]C=25\ \mu F=25\times 10^{-6}\ F[/tex]

Voltage of the battery, V = 12 volt

We have to find the energy stored in the capacitor. The energy stored inside the capacitor is given by :

[tex]E=\dfrac{1}{2}CV^2[/tex]

[tex]E=\dfrac{1}{2}\times 25\times 10^{-6}\ F\times (12\ V)^2[/tex]

E = 0.0018 Joules

Hence, the energy stored in the capacitor is 0.0018 Joules.

The resistance of the light bulb is calculated using Ohm's law, which gives approximately 70.59 ohms. The closest given answer choice is B. 71 ohms.

To calculate the resistance of the light bulb that is connected to a 120 V source and draws 1.7 A, we use Ohm's law, which states that Resistance (R) is equal to Voltage (V) divided by Current (I).

R = V / I

Therefore, the resistance of the light bulb is R = 120 V / 1.7 A, which equals approximately 70.59 ohms. When checking against the provided answers, the closest value is 71 ohms. So the correct answer is B. 71.

Answer:

option (C)

Explanation:

The source which gives the energy in form of heat is called heat source.

There are several sources which gives us heat. For example, sun, burning candle, burning coal, heater, wooden stove, etc.

Here, the cleanest source of heat energy is hot water.

Answer:

There are 3.34 C of charge are needed to spark.

Explanation:

Given that,

Electric field, [tex]E=3\times 10^{16}\ N/C[/tex]

If the charged particles in the field are separated by a distance of 1 mm, d = 1 mm

The electric field is given by the formula as follows :

[tex]E=\dfrac{kq}{d^2}[/tex]

q is charge

[tex]q=\dfrac{Ed^2}{k}\\\\q=\dfrac{3\times 10^{16}\times (1\times 10^{-3})^2}{9\times 10^9}\\\\q=3.34\ C[/tex]

So, there are 3.34 C of charge are needed to spark.

Answer:

The correct answer is 3.

Explanation:

The statement that best describes the meteor's motion is that its speed was 468 km/min northward, as it signifies the magnitude of speed and the direction of movement.

The correct answer would be 'C' Its speed was 468 km/min northwards. This statement best describes the meteor's motion as it indicates the magnitude of the speed and the direction in which it was moving. The term 'northwards' indicates that the meteor traveled from south to north. It is important to note that velocity would have been appropriate if the question had been about displacement with direction, while acceleration is concerned with the change in velocity over time, which is not given or implied in the question. The question's focus is solely on its movement's direction and speed.

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Answer:

Gravitational potential energy transforms into kinetic energy.

Explanation:

It is given that, we have to write energy transformation occurs when a skydiver first jumps from a plane.

Just before jumping from the plane, the skydive exhibit only gravitational potential energy because it is possessed due to height of an object. It can be given by :

PE = m g h

m is the mass of object

g is acceleration due to gravity

h is the height form the surface

As he reaches down, its potential energy decreases continuously and it is converting to kinetic energy. It can be given by :

KE = 0.5 mv²

V is the velocity of object

So, it is clear that the gravitational potential energy si transforms to kinetic energy.                      

The energy transformation that occurs when a skydiver jumps from a plane is the transformation of gravitational potential energy into kinetic energy. The altitude at which the jump happens directly influences the amount of potential energy available for transformation.

When a skydiver first jumps from a plane, the energy transformation that occurs is the conversion of gravitational potential energy into kinetic energy. As the skydiver is at a height, he/she has gravitational potential energy. Once the skydiver jumps out of the plane and begins to fall, this potential energy is transformed into kinetic energy, which is the energy of motion. The higher the altitude from which the skydiver jumps, the larger the amount of potential energy that can be transformed into kinetic energy.

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The instruments that produce sound from a vibrating string suspended between two nodes are called chordophones.

A chordophone is a musical instrument that produces sound from the vibration of a stretched string. The string is typically made of metal, nylon, or gut, and it is attached to two fixed points. When the string is plucked, bowed, or struck, it vibrates and produces sound waves.

Some of the most common chordophones include: Violin, Guitar, Harp, Lute. Chordophones are a diverse group of instruments, and they come in a variety of shapes and sizes. They are played in a variety of musical genres, and they are enjoyed by people all over the world.

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Resistors connected in series have a total resistance greater than any individual resistor and equal to the sum of all individual resistances. Statement (b) is incorrect, as are (c) and (e), which don't apply to series circuits.

When several resistors are connected in series, the correct statements are as follows:

(a) The total series resistance is greater than the resistance of any of the individual resistors.

(d) The total series resistance is equal to the sum of the resistances of all the individual resistors.

Statement (b) is incorrect because the total resistance of a series circuit cannot be less than any individual resistor's resistance. Statement (c) is also incorrect; while the total current through the circuit is dependent on the applied voltage, the total resistance itself is not dependent on the voltage but only on the value of the resistors in series. Lastly, statement (e) describes the calculation for total resistance in a parallel circuit, not a series circuit.

Answer:

1. 5.83

2. 1.38

3. 4.22

Explanation:

Final answer:

The electromagnetic force between two electrons 2.00 m apart is 2.30 x 10−29 N, and the gravitational force between them is 5.54 x 10−71 N. The ratio of these forces is approximately 4.15 x 10−42.

Explanation:

To compare the magnitude of the electromagnetic and gravitational forces between two electrons separated by a distance of 2.00 m, we can use Coulomb's Law for the electromagnetic force (Fe) and Newton's Law of Universal Gravitation for the gravitational force (Fg).

The formula for Coulomb's Law is Fe = k |q1q2| / r2, where k is Coulomb's constant (8.99 x 109 N m2/C2), q1 and q2 are the charges of the electrons (1.61 x 10−19 C), and r is the separation distance (2.00 m).

The gravitational force is given by Newton's Law of Universal Gravitation, which is Fg = G m1m2 / r2, where G is the gravitational constant (6.67 x 10−11 N m2/kg2), and m1 and m2 are the masses of the electrons (9.11 x 10−31 kg).

After calculating these values, we get:
Fe = 2.30 x 10−29 NFg = 5.54 x 10−71 N
To find the ratio Fe/Fg, we divide the electromagnetic force by the gravitational force, resulting in:
Fe/Fg = 4.15 x 1042.