What information does a shadow give us?​

Answer:

it is because solar energy is the perpetual source of energy and by using it non renewable sources of energy can be conserved for the future

Explanation:

because there is amblens name

The statement "The Earth is floating in space" is FALSE in Anaximander's cosmology.

Anaximander, an ancient Greek philosopher, proposed a cosmological model that differed from the statement given in option d. According to Anaximander's cosmology, the Earth is not considered to be floating in space. Instead, his model described the Earth as being embedded within rotating rings and cylinders that contained celestial bodies such as the Sun, Moon, stars, and planets.

Anaximander's cosmology was geocentric, meaning it placed the Earth at the center of the universe. The Earth was believed to be a flat, circular disk supported by pillars. The celestial bodies, including the Sun, Moon, stars, and planets, were thought to be situated in separate concentric rings or cylinders surrounding the Earth, with each celestial body having its own ring or cylinder.

Therefore, the statement that is FALSE regarding Anaximander's cosmology is d. The Earth is not described as floating in space but rather as being embedded within rotating rings and cylinders containing other celestial bodies.

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Given,

The force applied by each person who is pushing the object, F=50 N

The frictional force, f=20 N

The frictional force is the force that opposes the motion of the object. As the people are pushing the object to the right, the frictional force will be directed to the left. And as the force with which people are pushing is greater than the frictional force, the net force will also be directed towards the right.

The net force is given by,

On substituting the known values,

Therefore the net force on the object is 80 N to the right.

Thus the correct answer is option 4.

Answer:

Not as big as the previous asteroid that whipped out the dinosaurs

Answer:

A Benjamin Franklin

B George Washington

C Abraham Lincoln

D John Adams

Answer: Option B

Explanation:

A experiment has many factors in it. It has a dependent variable, independent variable, control variable et cetera.

The independent variable as its name signifies is not dependent on any factors and is directly controlled by the experimenter.

The dependent variable is dependent on the change in the independent variable.

The dependent variable is actually the result of the experiment and is not manipulated.

Answer:

Saturn is almost as big as Jupiter despite its smaller mass because Jupiter is a more dense gas giant than Saturn.

Explanation:

Each time a method executes, any parameter variables listed in the method header are initialized. This means that the variables are given a default value, oftentimes a specific type, depending on what is specified in the method header.

If no default value is specified, then the variables will be initialized to null. It is important to initialize variables when declaring a method as it helps to ensure that the code will run correctly.

Additionally, initializing the parameter variables in the method header can help make the code easier to read and understand, as it sets the expectations for what type of data is being passed in and what should be expected to be returned.

This is especially helpful when dealing with larger projects with multiple functions and methods. Initializing the parameter variables in the method header can make it easier to debug the code and can help prevent errors from occurring.

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Answer:

Newton's third law of motion

Answer:

1. a. 3,000 N

b. Repulsión

2. 46.875 × 10⁶ N/C

3. a. 81,000 J

b. 6.75 × 10⁹ V

Explanation:

1. Los parámetros dados son;

Q₁ = +12 μC, Q₂ = +16 μC

La distancia entre las cargas, r = 0.024

La magnitud de la fuerza electrostática, F, entre cargas se da como sigue;

\(F = k \times \dfrac{Q_1 \cdot Q_2}{r^2}\)

Donde, k = constante de Coulomb = 9.0 × 10⁹ N · m² / C²

Por lo tanto, obtenemos;

F = 9.0 × 10⁹ × 12 × 10⁻⁶ × 16 × 10⁻⁶ / 0.024² = 3.000

La magnitud de la fuerza electrostática, entre las cargas, F = 3000 N

(b) Dado que tanto Q₁ como Q₂ son cargas positivas, y las cargas iguales se repelen entre sí, la fuerza es la repulsión.

2) La intensidad de un campo eléctrico, E, se da como sigue;

\(E = \dfrac{k \cdot Q}{r^2}\)

La magnitud de la carga, Q = 24 μC

La distancia donde se mide el campo, r = 48 mm = 0.048 m

Por lo tanto, E = 9.0 × 10⁹ × 12 × 10⁻⁶ / 0.048² = 46,875,000 N / C

La intensidad de un campo eléctrico, E = 46,875,000 N / C = 46.875 × 10⁶ N / C

3. La magnitud de las cargas son;

Q₁ = 24 mC

Q₂ = -12 μC

La distancia entre las cargas, r = 0.032 m

un. El potencial eléctrico de una carga, \(U_E\) , se da de la siguiente manera;

\(U_E = k \times \dfrac{Q_1 \cdot Q_2}{r}\)

Por lo tanto;

\(U_E\) = 9.0×10⁹ × 24 × 10⁻³ × (-12) × 10⁻⁶ /0.032 = -81,000

La energía potencial eléctrica entre la carga, Q₁ y Q₂= -81,000 J

b. El potencial eléctrico de Q₁ en Q₂, V₁ = \(k \times \dfrac{Q_1 }{r}\)

Por lo tanto, V₁ = 9.0×10⁹ × 24 × 10⁻³/0.032 = 6.75 × 10⁹

El potencial eléctrico de Q₁ en Q₂, V₁ = 6.75 × 10⁹ V

Answer:

Assuming they're unit vectors (length of 1)

You simply add them together.

The vector pointing right can be described with X and Y

(1, 0).

The vector pointing down

(0, -1).

The numbers are taken from the axis in X and Y directions.

If you add them together you get a final vector.

(1, - 1)

This gives you -45° pointing South East.

Or 360°-45°=315°

Answer:

the answer is true Induction charging is a method used to charge an object without actually touching the object to any other charged object.

Explanation:

The estimated number of stars in the observable universe is about 1x10^22.

10 million can be written as  1,000,000,000 . It is expressed in scientific notation, it becomes 10 raised to 9= 1,000,000,000

The universe is made up of all of space, time, and everything that exists within them, including all of the planets, stars, galaxies, and other types of matter and energy. The prevailing cosmological explanation for the universe's formation is the Big Bang theory. The universe has been expanding ever since the Big Bang, which occurred 13.7870.020 billion years ago, according to this theory. Although the size of the entire universe's space is unknown, the observable universe's diameter, which is about 93 billion light-years at the moment, can be calculated.

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The estimated number of stars in the observable universe is about 1x10^22.

Scientific Notation

10 million can be written as  1,000,000,000 . It is expressed in scientific notation, it becomes 10 raised to 9= 1,000,000,000

What is an Universe?

The universe is made up of all of space, time, and everything that exists within them, including all of the planets, stars, galaxies, and other types of matter and energy. The prevailing cosmological explanation for the universe's formation is the Big Bang theory. The universe has been expanding ever since the Big Bang, which occurred 13.7870.020 billion years ago, according to this theory. Although the size of the entire universe's space is unknown, the observable universe's diameter, which is about 93 billion light-years at the moment, can be calculated.

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Answer:

Most likely, it will be harder to get strong magnets to change phase because they have more density.

effort distance/resistance distance or length of ramp/height of ramp or dE/dr  is correct for calculating the ideal mechanical advantage

Theideal mechanical advantage would not have any friction. this is due to the fact that some of the effort put into the machine is lost trying to overcome friction.

ideal mechanical advantage is denoted by the sign IMA, that ignores the drawbacks of friction.

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Kinetic energy is energy of motion. If the object is sitting still, then it has no kinetic energy. It doesn't matter what its mass is, or how high the shelf is.

KE = 0

First, for this problem, we will need to know the formula for time dilation

Where t is the time in the reference frame on earth

t0 is the time on the ship

v is the velocity relative to lightspeed

and c is light speed in a vacuum

For this problem, we will need to convert .93x10^8 to a fraction of light speed.

.93x10^8 = .31c

Now, we can plug in the numbers we get from the given

t0 = 6 hours since the ship has been in the air for 6 hours

t = 6.31089

For the answer to be valid, we will convert .31089 to minutes by multiplying it by 60 (60 minutes in a hour)

18.654 minutes

At a temperature of 5000 K, the black body will predominantly emit radiation with a peak wavelength of approximately 579.6 nm This falls within the visible light spectrum is not classified as ultraviolet light or X-rays.

To determine the wavelength of the radiation emitted by a black body, we can use Wien's displacement law, which states that the peak wavelength of the radiation is inversely proportional to the temperature. Mathematically, it can be expressed as:

λ_max = b / T

where λ_max is the peak wavelength, b is Wien's displacement constant (approximately 2.898 × 10^−3 m·K), and T is the temperature in Kelvin.

Converting the given temperature of 5000 K to Kelvin, we have T = 5000 K.

Substituting the values into the formula, we can calculate the peak wavelength:

λ_max = (2.898 × 10^−3 m·K) / 5000 K

= 5.796 × 10^−7 m

Since the wavelength is given in nanometers (nm), we can convert the result to nanometers by multiplying by 10^9:

λ_max = 5.796 × 10^−7 m × 10^9 nm/m

= 579.6 nm

Therefore, the black body at a temperature of 5000 K will emit ultraviolet light or X-rays with a peak wavelength of approximately 579.6 nm.

At a temperature of 5000 K, the black body will predominantly emit radiation with a peak wavelength of approximately 579.6 nm. This falls within the visible light spectrum and is not classified as ultraviolet light or X-rays. The given wavelength of 5.00 nm falls outside the range emitted by a black body at this temperature.

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The distance the skier will go before they stop is 10193.68m.

Given ; Mass =100kg

coefficient of kinetic friction μ=0.05m

u=100m/s

v=0

μg=a

a= μg=0.05 x 9.81=0.4905 m/s²

v²-u²=2as

[v²-u²]/2a= s

-100²/2(0.4905)

s=10193.68m (neglecting the negative sign)

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Answer:

2.029×10^-18 J

Explanation:

E=hv

so

E=(3.06×10^15)*(6.63×10^-34)

E=2.029×10^-18 J

Answer:

b. between 2 s and 4 s

Explanation:

2-4 was both 3m/s

Answer:

C?

Explanation:

Messages are most associated with assertive communication style.

The ability to talk and engage in a way that respects and recognizes the rights and opinions of others while simultaneously standing up for your own needs, wants, and personal boundaries is referred to as assertive communication.

Expressing disapproval of a situation or idea through assertiveness is a powerful and non-confrontational tactic.

According to Pipas and Jaradat (2010), assertive communicators can speak up for their rights (or those of others) in a dignified and honest manner, reducing interpersonal disputes and upholding respect for others.

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To make real ice cream, the ice cream must contain a minimum of 10% milk fat.

Ice cream is a delicious and popular dessert enjoyed by people all over the world. It is made by mixing cream, sugar, and other ingredients and then freezing the mixture until it becomes thick and creamy. Ice cream is defined as a frozen food product that is made from a mixture of milk, cream, sugar, and flavorings.

It must contain at least 10% milk fat to be considered real ice cream. The milk fat is what gives ice cream its creamy texture and rich flavor. Milk fat is an essential ingredient in ice cream because it gives it the smooth, creamy texture that people love. Without enough milk fat, the ice cream will be thin, icy, and not as flavorful.

Milk fat is a key ingredient in ice cream and is what gives it its signature taste and texture. Most ice cream makers use a combination of milk and cream to achieve the desired milk fat content. Some ice cream makers also add other ingredients like eggs or stabilizers to help improve the texture and consistency of the ice cream.

Ice cream is a popular dessert that has been enjoyed for centuries. By following the proper recipe and using high-quality ingredients like milk fat, you can make delicious and creamy ice cream at home.

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(1) The moment of 20N about the wheel is 30 Nm. (2) The distance of the wheel to the center of mass of the wheelbarrow is 1.2m.

1. The moment of 20N about the wheel can be calculated using the formula:

Moment = Force x Distance

Moment = 20N x 1.5m

Moment = 30 Nm

2. To find the distance of the wheel to the center of mass of the wheelbarrow, we can use the principle of moments, which states that the sum of the clockwise moments about a point is equal to the sum of the anticlockwise moments about the same point. Let the distance from the wheel to the center of mass be x.

Clockwise moment = Weight x Distance

Clockwise moment = 80N x (1.5m - x)

Anticlockwise moment = Upforce x Distance

Anticlockwise moment = 20N x x

Using the principle of moments:

80N x (1.5m - x) = 20N x x

Simplifying and solving for x:

120m = 100x

x = 1.2m

Therefore, the distance of the wheel to the center of mass of the wheelbarrow is 1.2m.

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The gyroscope slows from an initial rate of 29.6 rad/s at an angular acceleration of 0.54 rad/s2.

Part (a) How long does it take to come to rest in seconds? t = ?

The angular deceleration is given by the negative value of the angular acceleration; thus:

α = -0.54 rad/s2

The initial velocity is given by the value,

ω1 = 29.6 rad/s.

The final velocity, ω2 = 0 rad/s.

The formula for angular acceleration is:

ω2 = ω1 + αt,

where:

ω1 = 29.6 rad/s

ω2 = 0 rad/s

α = -0.54 rad/s

2t = ?

Substitute the values in the formula above and solve for t.

0 = 29.6 - 0.54tt = 29.6/0.54t = 54.8 seconds

Therefore, it takes 54.8 seconds to come to rest in seconds.

Part (b)The number of revolutions that the gyroscope makes before stopping is given by:

n = (ω1/2π)t,

where:

ω1 = 29.6 rad/s

t = 54.8 s

n = ?

Substitute the values in the formula above and solve for n:

n = (29.6/2π)(54.8) revolutions

n ≈ 277.4

Therefore, the number of revolutions that the gyroscope makes before stopping is approximately 277.4 revolutions.

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