Which of the following statements about the Sun is true?

Final answer:

The two forms of electromagnetic energy that mainly pass through Earth's atmosphere are visible light and certain microwaves, which are crucial for life and climate balance.

Explanation:

The two forms of electromagnetic energy that mostly pass through the Earth's atmosphere to reach the surface are visible light and certain microwave frequencies. While our atmosphere acts as a shield, it selectively filters out most other wavelengths of incoming solar radiation. However, it allows the transmission of the majority of visible light and certain bands of the infrared spectrum, while absorbing harmful ultraviolet rays and other frequencies. This filtering is crucial for protecting life on Earth and for the climate balance by controlling the energy received at the surface.

12/24=4x3/8x3

=4/8

4/8 is not correct ans it is less than 5/8

B) 3/4

multiply and divide it by 2 so the denominator should be equal to 8

3x2/4x2=6/8

6/8 is greater that 5/8 hence b is correct option

C)15/24=5/8 which is equalt to 5/8 hence it is not correct answer

D)4/12=1/3 it is also less than 5/8

Answer:

it's actually 12.3 on Edge!

Explanation:

Answer: Option (a) is the correct answer.

Explanation:

Chemical properties are defined as the properties that show chemical nature of a substance or compound.

For example, toxicity, reactivity, combustion etc are all chemical properties.

Properties in which there is no change in chemical nature of a substance is known as physical property.

For example, solubility, density, volume, mass etc are all physical properties.

When a substance becomes corrosive in nature then it means oxidation of substance has occurred.

When concentration of hydrogen ions increases then it means acidity of a substance increases.

When an acid comes in contact with a metal then it releases hydrogen atoms.

For example, [tex]2HCl + Mg \rightarrow MgCl_{2} + H_{2}[/tex]

When we add an acid to a base then it will result in the formation of salt and water.

For example, [tex]HCl + NaOH \rightarrow NaCl + H_{2}O[/tex]

An acid does not feel slippery but a base feels slippery on touch.

Thus, we can conclude that chemical properties of an acid include corrosive, increases the concentration of hydrogen ions when added to water, forms hydrogen gas when it comes in contact with a metal, and forms salt and water when added to a base.

a) they have higher reproductive rates

Answer:

The States of Matter. States of matter are solids, liquids, gasses, and plasma.

Phases of Matter. A phase of matter is uniform with respect to its physical and chemical properties.

Examples. At room temperature and pressure, the state of a piece of dry ice (carbon dioxide)...

Explanation:

The squirrel is sitting at a height of 7.35 m.

The energy possessed by a body by virtue of its position is called potential energy.

If the squirrel has a mass m and if it sits at a height h then, the potential energy E of the squirrel is given by,

[tex] E=mgh [/tex]

here, g is the acceleration due to gravity.

Given:

[tex] m=0.5 kg;E=36 J [/tex]

Take the value of acceleration due to gravity [tex] g=9.8 m/s^2 [/tex]

Rewrite the equation for energy in terms of h.

[tex] h=\frac{E}{mg} [/tex]

Substitute the given values and calculate the value of h.

[tex] h=\frac{E}{mg} \\ =\frac{36 J}{(0.5 kg)(9.8 m/s^2)} \\ =7.35 m [/tex]

The squirrel is at a height of 7.35 m

Answer:

The following are bases:  baking soda, bleach, soap, and ammonia.

The other items are acidic.

Explanation:

Bases have four different properties. They are bitter, feel slippery, do not react with carbonates, and turn red litmus paper blue.

In comparison, an acid tastes sour, reacts with metal and carbonates, and turns blue litmus paper red.

Hello!

momentum is p=mv so if the velocity is decreased by a factor of 2, which is 1/2 the value, then the momentum of that object will decrease by the same factorial.

Hope this helps, any questions please ask. Thank you!

Qualitatively the momentum is the amount of motion contained in the body.

Quantitatively momentum is the product of mass and velocity of the body.

Mathematically momentum= mass×velocity

                                       i.e p=m×v

where p denotes the momentum.

As per the question the initial velocity of the particle is given as [u]=60 m/s

The final velocity of the particle is given as [v]=30 m/s

Let the mass of the particle is m kg

The initial momentum [tex]p_{1} =m*u[/tex]

                                                  =60m kg m/s

the final momentum [tex]p_{2} =m*v[/tex]

                                                   =30m kg m/s

Hence the change in momentum is given as -

                                   [tex]p_{2} -p_{1} =[30m -60m] kg m/s[/tex]

                                                              = -30m kg m/s

Here the minus sign indicates the loss of momentum

Hence the momentum is decreased by twice as the velocity is decreased by twice.

In general if velocity is decreased by m times ,then the momentum is decreased by m times also.

Answer: The correct answer is Option C.

Explanation:

Energy of the Electromagnetic Spectrum is given by the Planck's equation:

[tex]E=h\nu[/tex]

Where,

E = Energy of the wave

h = Planck's constant

[tex]\nu[/tex] = Frequency of the wave

And we know that,

[tex]\nu=\frac{c}{\lambda}[/tex]

where,

c = Speed of light

[tex]\lambda[/tex] = Wavelength of the wave

Putting the value of frequency in energy equation, we get:

[tex]E=\frac{hc}{\lambda}[/tex]

From the above relation, we get that energy is inversely related to wavelength of the wave.

From the spectra, we know that order of wavelength follows:

Infrared > Visible > UV

So, the order of energy gets reversed and the order becomes:

Infrared < Visible < UV

From the above information, we conclude that the correct option is Option C.

Final answer:

To calculate acceleration, determine the change in velocity and the change in time, then use the formula a = ∆v/∆t where 'a' is acceleration, ∆v is the change in velocity, and ∆t is the change in time.

Explanation:

To find the acceleration in a problem, follow these general steps:

Determine the change in velocity (Δv), which is the difference between the final velocity (Vf) and the initial velocity (Vo).

Identify the change in time (Δt) over which the velocity change occurs.

Use the formula for average acceleration, which is a = Δv/Δt, where 'a' represents the acceleration, Δv is the change in velocity, and Δt is the change in time.

For instance, if a train starts at rest (Vo = 0) and reaches a velocity of 30.0 km/h (Vf) in 20.0 seconds (Δt), convert the velocity to meters per second (since 1 km/h is equal to approximately 0.27778 m/s), calculate Δv, and then divide by Δt to find acceleration.

A wall switch is connected to a wall outlet. A lamp is plugged into the same outlet. You turn the switch on, but the lamp stays off. Three reasons why this might happen are a Defective bulb, a Faulty switch and Issues with the outlet.

Defective bulb: The lamp's bulb may be burned out, causing it not to light up.

Faulty switch: The wall switch itself may be faulty and not properly completing the circuit to the lamp.

Issues with the outlet: There could be a problem with the electrical outlet, like a loose connection or no power supply.

Answer:

It will exert a force on the electric current.

Explanation:

Answer: (D)

A generator converts kinetic energy to electrical energy, and a motor converts electrical energy to kinetic energy.

Explanation:

Just remember a generator makes electricity, and motors move things therefore creates kinetic energy.

The best contrast between an electric generator and an electric motor is,

A generator converts kinetic energy to electrical energy and a motor converts electrical energy to kinetic energy. The main difference between the two is, that the generator works on the principle of Electromagnetic induction, and the motor works on the principle of the Effect of Magnetic field on a current-carrying coil.

Thus, the best contrast between a generator and an electric motor is the energy conversions. A generator converts mechanical energy into electrical energy and an electric motor converts electrical energy into mechanical energy.

Learn more about Electromagnetic induction here:

https://brainly.com/question/15566299

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Saturn's rings are made out of B. Small icy bodies

Hope this helped ;)

Answer:

(10,1)

Explanation:

Given: distance of 1 km and time taken 10 minutes.

To Find: Which ordered pair represents a distance of 1 km and a time of 10 minutes in distance time graph.

Solution:

Consider the file attached.

We know that any point in a graph with point [tex]\text{x}_{i}[/tex] on x-axis and [tex]\text{y}_{i}[/tex] on y-axis=[tex](\text{x}_{i},\text{y}_{i})[/tex]

in a distance versus time graph,

Y-axis represents Distance and X-axis represents Time

plotting the points in Distance versus time graph,

distance [tex]1\text{km}[/tex] is plotted on Y-axis

Time [tex]10\text{minutes}[/tex] is plotted on X-axis

from graph,

the ordered pair for distance of [tex]1\text{km}[/tex] and Time [tex]10\text{minutes}[/tex] is represented by [tex](10,1)[/tex].

ON EDGEN: The three steps in the general adaptation syndrome are alarm, resistance, and exhaustion. Alarm is the fight-or-flight response. Your hormones surge, breathing becomes rapid and shallow, glucose is released, your heart rate increases, and your pupils dilate. The second part is resistance, which includes either fighting, where a stressor is taken head on, or flight, where a stressor is avoided. It includes how your body uses stored energy, hormones, minerals, and glucose to react. The final stage is exhaustion, also known as burn out. After prolonged stress, exhaustion kicks in and the ability to manage stress becomes low. At this point, the system of the body can become compromised due to prolonged exposure to the hormones involved with stress.

The features of general adaptation syndrome (GAS)  are the Alarm stage, Resistance stage, and Exhaustion stage.

General adaptation syndrome (GAS) is a term coined by Hans Selye, a pioneering researcher in the field of stress, to describe the body's response to stressors.

The general adaptation syndrome consists of three stages:

1. Alarm stage: In this stage, the body recognizes a stressor and responds with the "fight or flight" response. The sympathetic nervous system is activated, which causes an increase in heart rate, respiration, and blood pressure, and a release of stress hormones like adrenaline and cortisol.

2. Resistance stage: If the stressor persists, the body enters the resistance stage. In this stage, the body tries to adapt to the stressor by continuing to release stress hormones and maintain the elevated physiological responses from the alarm stage. The body may also try to repair any damage caused by the stressor during this stage.

3. Exhaustion stage: If the stressor continues for an extended period of time, the body may enter the exhaustion stage. In this stage, the body's resources are depleted, and it may no longer be able to maintain the physiological responses from the resistance stage. This can lead to a variety of physical and mental health problems, including illness, depression, and burnout.

The general adaptation syndrome is a model that explains how the body responds to stressors over time. Understanding this model can help individuals and healthcare professionals to better manage and cope with stress.

Therefore, the three main features of GAS are the Alarm stage, Resistance stage, and Exhaustion stage.

To learn about the types of biology click:

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The frequency of the ocean waves is approximately 0.261 Hz, and the period is approximately 3.83 seconds, calculated based on the observation that 12 wave crests passed the observer in 46 seconds.

To calculate the wave frequency and period of ocean waves that a girl floating in the ocean observes, you can use the following definitions and formulas:

Given that 12 wave crests pass the observer in 46 seconds, the frequency (f) can be calculated as:

f = Number of waves / Time = 12 waves / 46 s
≈ 0.261 Hz

To find the period (T), you can use the formula:

T = 1 / f
≈ 1 / 0.261 Hz
≈ 3.83 s

Therefore, the frequency of the waves is approximately 0.261 Hz, and the period is approximately 3.83 seconds.