A total charge of 7.5 mC passes through a cross-sectional area of a wire in 0.9 s. What is the current in the wire

What a medium-mass star becomes after a planetary nebula; a very bright, dense mass about the size of the planet Earth. ... The process that generates all of the energy that a star produces. Supernova. A Red Super Giant explodes into this when it runs out of elements to fuse together.

The process that generates all of the energy that a star produces. Supernova. A Red Super Giant explodes into this when it runs out of elements to fuse together. Hence option A is correct.

A red giant is a bright giant star of low or intermediate mass (approximately 0.3-8 solar masses (M)) that has reached the end of its evolutionary cycle. The outer atmosphere is inflated and tenuous, resulting in a wide radius and a surface temperature of 5,000 K (4,700 °C; 8,500 °F) or less. The appearance of red giants ranges from yellow-white to reddish-orange, and includes spectral types K and M, as well as class S and most carbon stars.

Hence option A is correct.

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The correct answer is(b). There is a physical change from the solid state to a gas state where energy between the molecules increases.

During sublimation, carbon dioxide transitions directly from the solid state (dry ice) to the gas state without passing through the liquid phase. In this process, individual molecules of carbon dioxide gain energy from the surroundings, leading to an increase in their kinetic energy and molecular movement.

As a result, the carbon dioxide molecules separate from each other and form a gas. This phase change is considered a physical change rather than a chemical change since the chemical composition of carbon dioxide remains the same throughout the process.

Therefore, the sublimation of carbon dioxide results in a physical change where the molecules transition from the solid state to the gas state, gaining energy and increasing their molecular movement.

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Answer:

I’d say the air outside the hemisphere is more free than from the inside of the hemisphere.

Explanation:

hope this help!

Answer:

350 miles

Explanation:

because multiply 70 times 5 and you will get 350

A 90 kg goaltender celebrate by jumping 110 cm into the air after defending the goal. 970.20 J was work done throughout the celebration.

The sum of the displacement as well as the components of the force applied of the object in the displacement direction is the work done by a force. The body moves with certain acceleration when we push a blocks with certain force, and work is completed.

m = mass of the body = 90 kg

g = gravitational force

h = height = 110cm

Formula -

work done = mgh

                   = 90 × 9.8 × 110

                   = 970.20 J

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Answer: increase in speed can cause a large increase in kinetic energy if you double the mass, then you double the kinetic energy or when the faster something is moving, the greater the force it is capable of exerting and the greater energy it possesses.

Hope this helps!

Answer:

False

Explanation:

I took the K.12 test

Answer:

Person above me is correct, False

Explanation:

I go to K12 too (yes, it is K12)

The overall charge of an object that has 82 protons, 82 neutrons, and 109 electrons is -27. Details about charge can be found below.

The overall charge of an atom can be calculated by subtracting the number of electrons from the number of protons.

The proton number represents the number of positively charged atom while the electron number represents the number of negatively charged atom.

According to this question, a charged object has 82 protons, 82 neutrons, and 109 electrons. The overall charge of the atom is calculated as follows:

Overall charge = 82 - 109

Charge = -27

Therefore, the overall charge of an object that has 82 protons, 82 neutrons, and 109 electrons is -27.

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Answer:

the answer is 250

Explanation: took the test

The resulting clay ball, weighing 45 g, achieves a speed of approximately 2.222 m/s following the collision.

To find the resulting speed, we can use the principle of conservation of momentum. The total momentum before the collision is equal to the total momentum after the collision.

Given:

Let's calculate the total momentum before the collision:

Initial momentum (before collision) = (m1 * v1) + (m2 * v2)

Plugging in the values:

According to the conservation of momentum, the total momentum after the collision should be equal to the initial momentum. So:

Total momentum after the collision = Initial momentum

Total momentum after the collision = (m3 * v3)

Plugging in the values:

0.100 kg m/s = (0.045 kg * v3)

Now we can solve for v3:

v3 = (0.100 kg m/s) / (0.045 kg)

v3 ≈ 2.222 m/s

Therefore, the speed of the resulting 45 g clay ball after the collision is approximately 2.222 m/s.

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Answer:

b or chhhhhhhjjjjjjjjjjhhh

Answer:

y(x, t) = A Sin(ωt ± kx)

Explanation:

Waves can be classifies as either stationary (standing), or progressive (travelling). A progressive wave is one the is a traveling wave, transferring energy along its path. While a stationary wave seems not to be moving.

The general equation for a progressive wave is;

y(x, t) = A Sin(ωt ± kx)

Where: A is its amplitude, t is the time, k is the wave number.

When the wave travels in the positive x-axis direction, the equation changes to;

y(x, t) = A Sin(ωt - kx)

When it travels in the negative x- axis direction, the equation becomes;

y(x, t) = A Sin(ωt + kx)

NB: ω = 2\(\pi\)f and k = 2\(\pi\)/λ.

To convert rpm to radians/sec, we should multiply the value in rpm with 0.104720 to get the value in rad/s.

Revolutions per minute rpm is a unit of frequency which is generally used to measure the number of turns in one minute.

1 rpm is said to be equal to 0.104720 rad/s.

1 revolution = 2π radians/min = 2π/60 rad/s

The rad/s is the SI unit of angular speed which is denoted by ω. Rad/s is the change in rotational or revolution of an object per second.

1 rad/sec = 9.549297 rpm

Thus, to convert from rpm to rad/s, we must multiply the number by 0.104720.

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Answer:

320

Explanation:

Group R1 and R2

Then group R1'2 with R3

Explaination :

Here the given circuit is both in series and parallel. So we would be first calculating the total resistance in series.

Rs = R1 + R2 .... n

Rs = 100Ω + 220Ω

Rs = 320Ω

Therefore, resistance in series combination is of 320Ω.

Now, the circuit would be combined in parallel.

As we know that,

>> 1/Rp = 1/320 + 1/320

>> 1/Rp = 1 + 1 / 320

>> 1/Rp = 2 / 320

>> 1/Rp = 1 / 160

Cross multiplying them,

>> Rp = 160Ω

Therefore,

a)The amplitude of the wave will be 0.120m.

b)The period of the wave will be 1.60s.

Frequency is defined as the number of repetitions of a wave occurring waves in 1 second.

a)The amplitude of the wave will be 0.120m.

A is the initial displacement =0.120m

The amplitude represents the largest deviation from equilibrium. So that the amplitude of the wave will be equal to the maximum position.

Hence the amplitude of the wave will be 0.120m.

b)The period of the wave will be 1.60s.

The movement from maximum positive displacement to maximum negative displacement. The time period will be;

\(\rm \frac{T}{2} = 0.800 \\\\\ T= 1.6 \ sec\)

Hence the period of the wave will be 1.60s.

c) The frequency of the wave will be 0.625Hz.

The frequency is inversely proportional to the time period. Frequency is found as;

\(\rm f=\frac{1}{T} \\\\ \rm f=\frac{1}{0.625} \\\\ \rm f=0.625 \ Hz\)

Hence the frequency of the wave will be 0.625Hz.

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Answer:

B.

Explanation:

Given that a Moving a wire through a magnetic field created by two stationary permanent magnets will...:cause the magnets to move.

create a current through the wire.

produce no visible effect.

cause the magnetic field to flow in the opposite direction.

According to faraday's law, the EMF will be induced. And the induced EMF will definitely create electric current through the wire.

Therefore, option B is the best answer.

The satellite which has the thickest atmosphere is Titan.

Titan is the moon of planet Saturn and is 2nd largest satellite that occurs naturally in the solar system.

It is almost 0x away from the sun located at a distance of about 886 million miles.

According to NASA, its atmosphere is composed of weird molecules named 'cyclopropenylidene' that are unique in composition and couldn't be found on any other planet.

Here the atmosphere is very dense and chances of life have also been found on this satellite.

Titan has appropriate conditions for life and, therefore, is suitable for retaining life.

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Answer:

The center of mass is a position defined relative to an object or system of objects.

Explanation:

Answer:

Average speed

Explanation:

There is no explanation its written in the definition. Hope this helps.

Answer:

speed and direction of motion

Explanation:

velocity is a description of an objects speed and direction of motion

The base of a cumulus cloud marks the altitude at which rising air cools to the dew point of temperature, leading to condensation and the formation of the cloud.

Cumulus clouds are formed as a result of warm air rising and encountering cooler air at higher altitudes, this process is known as convection. As the warm air rises, it expands and cools adiabatically, meaning that the temperature decreases due to the decrease in air pressure. The dew point is the temperature at which the air becomes saturated and can no longer hold all the water vapor present. When the rising air cools to the dew point, the water vapor starts to condense into tiny water droplets or ice crystals, forming a cloud. The altitude at which this condensation occurs and the cloud base is formed depends on the temperature and humidity profile of the atmosphere.

Typically this clouds have well-defined, sharp edges and a flat base, which is a result of the uniform dew point temperature at that altitude. The height of the cloud base can vary depending on the weather conditions and the location, but it is generally observed at around 1,000 to 3,000 meters above the ground. In summary, the base of a cumulus cloud represents the altitude where the rising air cools down to the dew point temperature, leading to condensation and the formation of the cloud, this process is influenced by atmospheric temperature and humidity profiles, as well as local weather conditions.

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Answer:

Read the information down below. Hope it helps :)

Explanation:

3) C. When gasoline burns in a car engine, some of the chemical energy in the gasoline is converted into heat, then the heat is converted into mechanical energy, and finally mechanical energy moves the car.

4) A. Chemical energy is energy released when a substance undergoes a chemical reaction.

5) D. Radiant energy includes visible light, x-rays, gamma rays, and radio waves.

6) 1. Chemical energy. A battery stores chemical energy and converts it to electrical energy.

   2. Potential energy is stored energy and the energy of position.

   3. Kinetic energy is the energy of motion.

   7. A battery is a device that stores chemical energy and converts it to    

      electrical energy.

   8. Potential energy is stored energy and the energy of position.

   9. Kinetic energy is the energy of motion.

The correct answer is 3).The correct option is C). 4) The correct option is A).

5). The correct option is D).  6). The correct option is A). 7) The correct option is A).

3). A moving car releases Kinetic and Potential energy both of which comes under the category of  Mechanical energy.

4). Explosions releases heat which is produced due to chemical reaction during explosion, Explosions' releases Chemical energy

5) X-ray are electromagnetic radiations, They are released when electron losses it's speed.

6) A battery in the phone can be considered as an example of Potential energy as charging occurs due to change in potential difference.

7) A battery in it's package is an example of potential energy.

The correct options are 3).B, 4).A, 5).D, 6).A 7)A.

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The electron is extremely small particle and the charge on electron is -1.

Characteristics Of Proton:

1. Protons are the positively charged particle. The charge on proton is positive.

2. The location of proton is inside the nucleus.

3. The mass of the proton is 1.67262 × 10−27 kg.

4. The charge on 1 proton is 1.6 x 10-19 C.

Characteristics Of Neutron:

1. The neutron is electrically neutral.

2. It is present in the nucleus along with the proton.

3. The neutrons have the ability to penetrate into deep matter.

4. The neutron can show magnetism.

5. The absolute mass of the neutron is 1.6749 x 10-27 kg.

Characteristics Of Electrons:

1. Electrons are very small particles.

2.The charge on electron is -1.

3. the mass of the electron is  9.109389 × 10 −31 kilograms.

4. Electrons has three properties charge, mass, and spin.

So we can conclude that the electron is extremely small particle and the charge on electron is -1.

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Answer:

10

Explanation:

if you put 10 your right

1. Neoclassical economics is founded on the premise that markets efficiently distribute resources and that people act rationally to maximize their own self-interest. This point of view values the environment and its resources based on how valuable they are in supplying people with products and services, and it presupposes that the market will set the price for these resources based on their demand and scarcity. The external costs of resource depletion and environmental degradation, which are not reflected in market pricing, are not taken into account by the neoclassical paradigm. Since society as a whole bears the costs of pollution and resource depletion rather than the individuals who benefit from their use, this causes an undervaluation of natural resources and an overuse of the environment.

2. The ecological economics view is an alternative to the neoclassical view. This viewpoint acknowledges the economy's dependency on the environment and its resources and views it as a component of the biosphere. Environmental economics places value on the environment and its resources not just for their capacity to produce products and services, but also for their inherent worth and the ecosystem services they offer. In contrast to the neoclassical perspective, ecological economics acknowledges the external costs of resource depletion and environmental degradation and works to include environmental factors into economic decision-making.

3. The term "Hubbert's Bubble" describes the phenomenon of a sharp rise and subsequent collapse in the output of a non-renewable resource, like oil. It bears the name of geologist M. King Hubbert, who foresaw a peak in American oil production in the 1970s and a subsequent fall in the 1950s. According to Hubbert's Bubble, the amount of non-renewable resources that can be produced is constrained by their supply, and once their peak production is achieved, they will become more difficult to come by and more expensive to use.

4. An idea known as the "Tragedy of the Commons" illustrates how a shared resource, such as a common pasture, fishery, or groundwater basin, is overused and depleted. The tragedy arises when individuals acting in their own self-interest exploit the resource carelessly, causing degradation and ultimately causing the resource to collapse. Since the benefits of overuse are enjoyed by individuals while the costs of overuse are shared by all users, this results in a "commons dilemma" wherein individual incentives cause unsustainable resource use.

5. Human activity, including population expansion, economic development, and consumption habits, is the only factor that significantly strains our biodiversity and natural resources. The demand for natural resources rises as economies and human populations continue to expand, which causes habitat destruction, overfishing, pollution, and climate change. Invasive species introduction and disease transmission are also caused by human activity, which can have catastrophic effects on ecosystems and biodiversity.

Answer: it's 12

Explanation:

Range is the difference between the highest and lowest numbers.

33-21=12

Answer:

the answer is B

Explanation:

edg 2020

Answer:

Given

mass (m) =5kg

velocity (v) =6m/s

momentum (p) =?

Form

p=mv

5kgx6m/s

p=30kg.m/s

momentum =30kg.m/s

Main answer- the measure of pH of 6.M of water sample is  slightly acid

supporting answer - The pH of water indicates how acidic or basic it is. The scale runs from 0 to 14, with 7 representing neutral. pHs less than 7 indicate acidity, while pHs greater than 7 indicate baseness. The pH of water is an extremely important indicator of water quality.

final answer hence the ph of water is slightly acid

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