What would be 1/2 times 800?

The force exerted by the electromagnetic radiation from the sun on the Earth is 6.05 ´ 1017 N.

The force exerted by the electromagnetic radiation from the sun on the Earth is equal to the intensity of the radiation multiplied by the area of the Earth's surface.

The intensity of the radiation is 1350 W/m2, and the area of the Earth's surface is 4πr2, where r is the radius of the Earth.

Substituting these values into the equation:

F = 1350 W/m2 × 4πr2 = 1350 W/m2 × 4π × (6.4 ´ 106 m)2 = 6.05 ´ 1017 N

Therefore, the force exerted by the electromagnetic radiation from the sun on the Earth is 6.05 ´ 1017 N.

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Work

In physics work is said to be done when a force acting on a body displaces it through a certain distance. The work by a constant force is measured by the dot product of force will displacement.

i.e. W = F.S or W = F S cosq …(1)

where F = force and S = displacement

And q = angle between F and S.

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Based on the observation that the air over the land is much warmer than the air over the water during the day, the students most likely observed the wind blowing from the water towards the land.

The movement of air from the water to the land is known as a sea breeze. During the day, the land heats up more quickly than the water due to differences in their heat capacities. As a result, the air over the land becomes warmer and rises, creating a lower pressure area. The cooler air over the water, which has higher pressure, then moves towards the land to replace the rising warm air, resulting in a wind blowing from the water to the land. Therefore, the wind is most likely blowing from the east to the west in this scenario.

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To find the average velocity on a velocity-time graph, you need to calculate the slope of the line connecting two points on the graph. The average velocity represents the change in velocity divided by the change in time between those two points.

To calculate the average velocity, you can use the formula:

Average velocity = (change in velocity) / (change in time)

You can determine the change in velocity by finding the difference between the final velocity and the initial velocity. The change in time is the difference in the time coordinates of the two points.

Select two points on the velocity-time graph, typically denoted by (t₁, v₁) and (t₂, v₂), where t represents time and v represents velocity. Then, substitute the values into the formula mentioned above to calculate the average velocity.

It's important to note that the average velocity provides information about the overall change in velocity over a specific time interval, rather than instantaneous velocity at a particular moment.

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Answer:

Explanation:

Wavelength is one way of measuring the size of waves. ... The wavelength of a transverse wave can be measured as the distance between two adjacent crests. The wavelength of a longitudinal wave can be measured as the distance between two adjacent compressions.Feb 19, 2021

An energy change can have different effects on the identity of a substance depending on the type of energy involved and the nature of the substance itself. In general, an energy change does not alter the fundamental identity or chemical composition of a substance. The identity of a substance is determined by its unique arrangement of atoms and the types of chemical bonds present.

When considering changes in energy, it is important to distinguish between physical and chemical changes. In a physical change, the substance undergoes a transformation that does not alter its chemical composition. For example, heating water to its boiling point causes a physical change from liquid to gas, but the water molecules remain intact. In this case, the energy change (heat) affects the physical state of the substance but not its identity.

On the other hand, in a chemical change, the substance undergoes a transformation that involves the breaking and forming of chemical bonds, resulting in a different chemical composition. Energy changes, such as heat or light, can drive chemical reactions by providing the necessary activation energy. However, even in a chemical change, the identity of the substance is determined by the arrangement of its atoms and the types of elements involved.

In summary, an energy change, whether in the form of heat, light, or other forms, can affect the physical or chemical properties of a substance, but it does not alter its fundamental identity. The identity of a substance is determined by its unique composition and arrangement of atoms, which remain unchanged during most energy changes.

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Answer:

F = G M m / R^2

F1 = G M m / R1^2

F2 = 4 G M m / R2^2

F2 = 16 F1

The speed of sound for the given musical note is approximately 351 m/s.

The speed of sound can be calculated using the formula:

v = f * λ

where:

v is the speed of sound

f is the frequency of the sound wave

λ is the wavelength of the sound wave

Given:

Frequency (f) = 512 Hz

Wavelength (λ) = 0.685 m

Substituting the values into the formula, we have:

v = 512 Hz * 0.685 m

v ≈ 350.72 m/s

Rounding the value to the nearest whole number, the speed of sound for the given musical note is approximately 351 m/s.

The speed of sound for a musical note with a frequency of 512 Hz and a wavelength of 0.685 m is approximately 351 m/s.

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Answer:

Explanation:

Given parameters

initial velocity u = 4.9m/s

height of drop H = 100m

acceleration due to gravity g = -9.8m/s²(since the body is ascending i.e moving against gravity)

Required

time taken by the packet to reach the ground 't'

Using the equation of motion

S = ut+1/2gt²

0-100 = 4.9t+1/2(-9.8)t²

-100 = 4.9t-1/2(9.8)t²

-100 = 4.9t-4.9t²

4.9t-4.9t² +100 = 0

4.9t²-4.9t² -100 = 0

Multiplying through by 10

49t²-49t-1000 = 0

Using the general equation t = (-b±√b²-4ac)/2a

t = -(-49)±√(-49)²-4(49)(-1000)/2(49)

t = 49±√(2401+196000)/2(49)

t = 49±√(198401)/98

t = 49±√(198401)/98

t = 49±449.42/98

t = (49+449.42)/98

t = 494.42/98

t = 5.04secs

Hence, it took the packet 5.04secs to reach the ground

The final velocity is calculated using the formula v = u + at

v = u-gt

v = 4.9-(9.8)(5.04)

v = 4.9-49.392

v = -44.492m/s

This shows that the final velocity is 44.49m/s(moving downwards)

Answer:

1. What is the orbit of the Earth?

365 days

2. Is the Sun at the center of the Earth’s orbit?

Yes

3. Describe the motion of the Earth throughout its orbit? Does it move at constant speed?

Yes, the Earth moves pretty quickly and orbits around the Sun at a rate of approximately 67,000 miles per hour.

1. What is the orbit of Mars?

The shape is circular, 687 days

2. Is the Sun at the center of Mars’s orbit?

Yes

3. Describe the motion of Mars throughout its orbit? Does it move at constant speed?

Travels at a regular steady speed, yes moves at a constant speed

1. What is the orbit of Saturn?

Circular, 29 years

2. Is the Sun at the center of Saturn’s orbit?

Yes

3. Describe the motion of Saturn throughout its orbit? Does it move at constant speed?

Just like Mars, it moves faster when it is closer to the sun, so yes.

1. What is the orbit of Neptune?

Circular, 165 years

2. Is the Sun at the center of Nepturn’s orbit?

Yes

3. Describe the motion of Neptune throughout its orbit? Does it move at constant speed?

A steady consistent speed and yes it moves at a constant speed.

1. What is the orbit of the comet?

An oval, 200 years

2. Is the Sun at the center of the comet’s orbit?

No

3. Describe the motion of the comet throughout its orbit? Does it move at constant speed?

A comet starts off slow then picks up speed and no it does not move at a constant speed.

Explanation:

I hope this helps, You're welcome.

Answer:

Explanation:

2. a

3. c

Some force must be continuously exerted to overcome the friction in order to maintain a steady speed.

An object must move at a consistent speed and direction in order to have a constant velocity. The object can only move in a straight line if the direction is constant. So, motion in a straight line at a constant speed is defined as having a constant velocity.

An object's direction changes continuously while it rotates in a circle at a constant speed. A change in velocity results from a change in direction. This is due to the fact that velocity is a vector quantity, meaning it has both an associated direction and magnitude.

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Answer:

C)

Explanation:

Earth's Rotation

Earth spins around its axis, just as a top spins around its spindle. This spinning movement is called Earth's rotation. At the same time that the Earth spins on its axis, it also orbits, or revolves around the Sun. This movement is called revolution.

Answer:

ca is carbon dioxide h20 is water

Explanation:

Answer:

yes you are totally right

Answer:

distance

Explanation:

A scalar quantity is a quantity which is described in size but no direction is given. Distance is described in metres, no direction but displacement is described in metres and direction.

Answer:

Average acceleration = 12m/s^2

Explanation:

Acceleration is equal to the change in velocity over the change in time:

\(a=\frac{\Delta v}{\Delta t}\)

Change in velocity is the final velocity minus the initial.

We are told the car goes from 0 to 26.8 m/s making 26.8 our final and 1 our initial. Therefore the change in velocity is 26.8-0 = 26.8m/s. (\(\Delta v\))

And that this happens over 2.2s so this is our change in time: \(\Delta t\)

Therefore our acceleration is: \(a = \frac{26.8}{2.2}\)

Acceleration = 12.18 m/s^2

Rounded to 2 significant figures (2s.g. in 2.2s), the answer is 12m/s^2.

Hope this helped!

The maximum angle of incidence that one can observe refracted light is approximately 51.6 degrees. The refracted ray in the water makes an angle of approximately 35.3 degrees with the normal.

a) To find the maximum angle of incidence, we need to consider the case where the angle of refraction is 90 degrees, which means the refracted ray is grazing along the interface. Let's assume the angle of incidence is represented by θ₁. Using Snell's law, we can write:

sin(θ₁) / sin(90°) = 1.33 / 1.50

Since sin(90°) is equal to 1, we can simplify the equation to:

sin(θ₁) = 1.33 / 1.50

Taking the inverse sine of both sides, we find:

θ₁ = sin^(-1)(1.33 / 1.50) ≈ 51.6°

Therefore, the maximum angle of incidence that one can observe refracted light is approximately 51.6 degrees.

b) If the incident angle in the glass is 45 degrees, we can calculate the angle of refraction using Snell's law. Let's assume the angle of refraction is represented by θ₂. Using Snell's law, we have:

sin(45°) / sin(θ₂) = 1.50 / 1.33

Rearranging the equation, we find:

sin(θ₂) = sin(45°) * (1.33 / 1.50)

Taking the inverse sine of both sides, we get:

θ₂ = sin^(-1)(sin(45°) * (1.33 / 1.50))

Evaluating the expression, we find:

θ₂ ≈ 35.3°

Therefore, the refracted ray in the water makes an angle of approximately 35.3 degrees with the normal.

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The number of characters that can be recorded per inch on a magnetic tape is determined by the density of the tape. Data storage and retrieval are essential to the functioning of computing systems. In the past, data was primarily stored on punched cards and punched paper tape.

These storage mediums had several limitations, including low storage capacity and low access speeds. Magnetic tape is a data storage medium that has been utilized to overcome these drawbacks. Magnetic tape is a thin strip of plastic that has a magnetic coating. Data can be stored on the tape by using magnetic recording techniques.The number of characters that can be recorded per inch on a magnetic tape is determined by the density of the tape. The density is the number of magnetic transitions that can be recorded on the tape per unit of length. The higher the density of the tape, the more data that can be stored on it per inch of length.

Magnetic tapes can have a density ranging from 800 bits per inch (BPI) to 6250 BPI or higher. A higher density of tape requires a more sophisticated recording technique, which can limit the access speed of the tape drive. As a result, a balance must be struck between data storage capacity and access speed.

Thus, the correct option is c. Density. The density of the tape determines the number of characters that can be recorded per inch on a magnetic tape. A higher density of tape can store more data but may require more sophisticated recording techniques that can limit access speed.

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Answer: Use the observations made in the virtual lab to complete this table. (pg. 5)

Month in

General observations of surface temperature anomaly maps

2008

Land

Sea

Hide side

Explanation: Use the observations made in the virtual lab to complete this table. (pg. 5)

Month in

General observations of surface temperature anomaly maps

2008

Land

Sea

Hide side

Answer:The answer sir would be 180.38

Explanation:

Most of the energy moves through the water when it is transferred to ocean water from the moving air above it. Option c is correct answer.

When energy is transferred to ocean water from the moving air above it, the most common response is that it moves through the water. The energy transferred from the moving air above the ocean is typically in the form of wind energy, which can generate waves and currents in the water. These waves and currents carry the energy through the water, causing the water to move and creating a variety of ocean phenomena such as tides, upwelling, and ocean currents. While some of the energy may be reflected off the surface of the water or cause some water to evaporate, these are typically minor effects compared to the overall energy transfer that occurs through the water. Hence, Option c is correct answer.

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--The complete question is, What happens to most of the energy when energy is transferred to ocean water from the moving air above it? responses

a. it pushes the water forward.

b. it reflects off the surface of the water.

c. it moves through the water.

d. it causes the water to evaporate.--

Answer: It moves through the water.

Explanation: I took the quiz on k12 and got 100% and here is proof.

a)The  the repulsive force between the 2 protons that are 2 fm apart is 30.6N.

b)The attractive gravitational force between the to protons that are 2 fm apart is \(2.27*10^{-35}N\)

c)Because both charges are of the same type, gravitational force is much smaller than repulsive force. The same charges repel one another.

Given,

Distance between the protons ,d = 2 fm = \(2*10^{-15} m\)

Charge of proton = \(1.67*10^{-19}C = 1.67*10^{-27} kg\)

a)

The repulsive force between the two protons can be calculate by formula,

\(F=k\frac{q_1q_2}{d^2}\)

Where, _1 and q_2 are charge of protons and d is distance between them.

k=\(8.988*10^9 N.m^2/C^2\)

\(F=8.988*10^9(\frac{1.67*10^{-19}}{2*10^{-15}})^2=30.6N\)

b)

The attractive gravitational force between the protons can be calculated by formula,

\(F=G\frac{m_1m_2}{d^2}\)

Where, G=gravitational force = \(6.67*10^{-11}Nm^2/kg^2\)

\(F=6.67*10^{-11}(\frac{1.167*10^{-27}}{2*10^{-15}})^2=2.27233903428*10^{-35}\)

The gravitational force between the protons is \(2.27*10^{-35} N.\)

c)

The gravitational force is very much smaller compared to repulsive force because both the charges are of same type. and same charges repel each other.

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Answer:

Georges Lemaître  - theorized that the universe had a beginning

Albert Einstein  - huit a model of the inverse haced on relativity

Galileo Galilei  - was the first to use a telescope to observe the planets

Edwin Hubble  - showed that the universe was expanding

Henrietta Swan Leavitt  - demonstrated a method to calculate the distance of celestial bodies

is my choices report if wrong

Galileo Galilei was the first to use a telescope to observe the planets

Albert Einstein built a model of the universe based on relativity

Henrietta Swan Leavitt demonstrated a method to calculate the distance of celestial bodies

Edwin Hubble showed that the universe was expanding

Georges Lemaître theorized that the universe had a beginning

Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds.

A method of learning about the world is science. Science allows people to participate in the creation of new knowledge as well as use that knowledge to further their goals. It is both a process, a product, and an institution.

Thus, The first person to observe the planets through a telescope was Galileo Galilei.

Based on relativity, Albert Einstein created a model of the universe.

A technique to determine the separation between celestial bodies was demonstrated by Henrietta Swan Leavitt.

Edwin Hubble demonstrated the expansion of the universe

According to Georges Lemaître, the universe had a beginning.

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The relatively stable scale degree that often resolves directly to the tonic is the fifth degree. The fifth degree is also known as the dominant scale degree, and it is one of the most essential elements of Western tonal music.

When a composer or songwriter wants to create a sense of resolution in a piece of music, they will often use the dominant chord, which is built on the fifth degree of the scale, to lead back to the tonic chord, which is built on the first degree of the scale. This is known as a V-I cadence, and it is one of the most common and effective ways to create a sense of closure in Western tonal music.In addition to its function as a dominant chord, the fifth scale degree is also used in a variety of other ways in Western music. For example, it is often used as a passing tone, connecting two other scale degrees in a melodic line. It can also be used as a pedal tone, where it is repeated over and over while other parts of the music change around it.Overall, the fifth scale degree is a crucial element of Western tonal music, and its stable and predictable nature makes it an excellent tool for composers and songwriters to use when they want to create a sense of resolution or closure in their music.

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Answer:

3

Explanation:

To find the inductance of the solenoid, we can use the formula for the inductance of a solenoid: L = \((μ₀ * N² * A) / l,\) Once we have the inductance, we can calculate the rate of change of current required to produce a emf.

To find the inductance of the solenoid, we can use the formula L = \((μ₀ * N² * A) / l,\)where μ₀ is the permeability of free space \((4π × 10^(-7) T·m/A)\), N is the number of turns (740), A is the cross-sectional area \((π * r²)\), and l is the length (25 cm). By substituting the given values, we can calculate the inductance in millihenries (mH).

To determine the rate at which the current must change through the solenoid to produce an emf of 70 mV, we can use the formula ε = \(-L * (dI/dt)\), where ε is the emf and L is the inductance. Rearranging the formula, we can solve for dI/dt by dividing both sides by -L. Substituting the given values of ε (70 mV) and L (in the units obtained in part a), we can calculate the rate of change of current in amperes per second (A/s) required to produce the given emf.

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Answer:

The atomic number of phosphorus is 15.

Explanation:

It’s found after Si(Silicon) and before S(sulphur)

Answer:

\(\boxed {\tt 3.63636364 \ m/s}\)

Explanation:

Velocity can be found using the following formula:

\(v=\frac{p}{m}\)

where p is the momentum and m is the mass.

The woman has a mass of 55 kilograms and a momentum of 200 kilogram meters per second.

\(p= 200 \ kgm/s\\m=55 \ kg\)

Substitute the values into the formula.

\(v=\frac{200 \ kg m/s}{55 \ kg}\)

Divide. Note that the kilograms, or kg, will cancel each other out.

\(v=\frac{200 \ m/s}{55}\)

\(v= 3.63636364 \ m/s\)

The woman's velocity is 3.63636364 meters per second.

Answer:

First, I would want to find what started the fire and why that's what caused it.

Second, I would take pictures of the area where the fire started if found.

Third, I would interview the witnesses.

Fourth, I would document the scene and write down everything that I see and what the people seen/heard happen.

Fifth, They need to do a full scene investigation.

Sixth, They need to do a follow up investigation.  

Who do you think bombed Bill’s house, and why? (one to two sentences) I think Bill bombed his own house because he did not want to be caught. He most likely bombed his house with all his belongings so that he couldn't be traced.

What other types of explosion or fire evidence might you look for within the blast radius? (two to three sentences) Within the blast radius I would search for chemical residue. I would try to find Bill as soon as possible to match the chemical residue on his clothes if there is any.

Does this incident change your theory on Dr. Fisher’s murder? Explain. (three to five sentences) As sad as it is I believe that Dr. Fisher was murdered by his own patient Bill since they had a very hostile relationship. The incident of Bill’s house bombing doesn’t change my theory on Dr. Fisher’s murder, in fact, it further consolidates my theory of Bill being the murderer since Bill wanted to get rid of the evidence so that’s why he bombed his own house.

Explanation: