An asteroid is hurtling towards Earth with a large amount of kinetic energy. When it enters the atmosphere it creates a small amount of gravitational energy. Once the asteroid hits the Earth, the asteroid breaks apart. What happens to the gravitational energy?

Answer:

When measurements are close to true

value they are called to be accurate

Explanation:

Answer:

A) accurate

Explanation:

Accuracy refers to how close a measurement is to the true value of what is being measured.

Step index fibres have refractive indices of 1.45 for the cladding and 1.46 for the core. The pulse dispersion caused by the numerical aperture alone is measured in ns/km.

For TIR to occur, the core should have a higher refractive index than the cladding since TIR only occurs when light moves from a denser to a rarer medium.

The part of the fibre that carries light is called the core. The core is encircled by the cladding. A substance with a slightly lower index of refraction than the core makes up the cladding. Whole internal reflection takes place at the core-cladding boundary as a result of this discrepancy in the indices.

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F = m · g

m = 1485 kg

g = 10 N/kg

F = 1485 kg · 10 N/kg = 14 850 N = 14,85 kN

Answer: The weight on Earth is 14,85 kN.

Answer:

The amount of power will be increased.

Explanation:

If the work remains constant but the time is reduced the power increases. Since power is defined as the relationship between work overtime. By means of the following equation, we can see this relationship.

\(P=W/t\)

where:

P = power [Watts]

W = work [J] (units of joules)

t = time [s]

Let's assume with an example the above written.

If we have an electric motor that exerts a work of 950 [J], and the time used is 5 [s], the power is:

\(P = 950/5\\P = 190 [W]\)

Now if we want to accelerate the work done and use 2 seconds for the time, we will have:

\(P=950/2\\P=475 [W]\)

We want to see how maintaining the work constant but reducing the time in which it occurs affects the power. We will see that the power increases.

We define power as the amount of work done per unit of time.

So we can compute power as the quotient between the work done and the time in which it is done.

So, if we reduce the time in which the work is done, then the denominator is smaller, thus, the power will be larger.

This means that maintaining the work constant, and reducing the time in which it is done, increases the amount of power exerted.

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The slope of a cold front is steeper than that of a warm front.

A warm front and a cold front are two different fronts associated with a mid-latitude low-pressure system. A cross-sectional view of these fronts can be helpful in better understanding their characteristics and structure. Let's take a look at the horizontal cross-section of these fronts:

Image showing the Horizontal Cross section of a warm front and a cold front for a mid-latitude low pressure system:

The 150 isobar is shown in bold.

The vertical structure of a warm front:

In a mid-latitude low-pressure system, a warm front represents the leading edge of a warm, moist air mass as it approaches a region of cold, dry air. In general, the warm air moves toward the cold air in the form of a low-level wedge. The warm front is associated with a gradual decrease in temperature and pressure as one moves from the warm side to the cold side of the front. The steepness of the frontal slope is gradual. The slope is gradual because the warm air rises over the cool air.

The vertical structure of a cold front:

A cold front represents the leading edge of a cold, dry air mass as it advances toward a region of warm, moist air. It is usually associated with a line of clouds, precipitation, and thunderstorms. The frontal slope is steeper than that of a warm front, with a temperature drop of several degrees Celsius per kilometer of ascent. The cold air moves in a downward motion to the ground and forces the warm air up. This motion creates clouds, precipitation, and sometimes thunderstorms. Therefore, the slope of a cold front is steeper than that of a warm front.

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Answer:

Explanation:

Given:

V₀ = 3.0 m/s

H = 5.2 m

__________

L - ?

Time for the ball to fall vertically:

H = g·t²/2;    ⇒    t = √ (2·H / g) = √ (2·5.2 / 9.8) ≈ 1.0 c

Move the ball horizontally:

L = V₀·t = 3.0·1.0 = 3.0 m

If a boy throws a ball with a horizontal velocity of 3.0 m/s, from a height of 5.2 m over the ground , then the horizontal displacement of the ball is 3.09 meters.

There are three equations of motion given by Newton,

v = u + at

S = ut + 1/2 × a × t²

v² - u² = 2 × a × s

As given in the problem If a boy throws a ball with a horizontal velocity of 3.0 m/s, from a height of 5.2 m over the ground

S = ut + 1/2 × a × t²

5.2 = 0 + 0.5 × 9.8 ×  t²

t² = 5.2 / 4.9

t = 1.03 seconds

The horizontal displacement of the ball = 1.03 × 3

                                                                  = 3.09 meters

Thus, the horizontal displacement of the ball is 3.09 meters.

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Answer:

a = 0.5 m/s²

Explanation:

the type of problem is called a Newtons second law of motion.

and the equation would be the sum of F = m * a  where m = mass and a = acceleration

forces are 125N and the opposite direction is 120N

Eli pushes the table with a force of 120N towards Andy

and

Andy pushes the table with a force of 125N towards Eli

mass of table given as 10 kg.

using the equation

120N - 125N = 10kg * a

a = (120-125) / 10

a = -0.5 m/s² so the acceleration is in the direction of Andy's force towards Eli.

therefore a = 0.5 m/s²

Answer:

B.  

0.50 meters/second2

Explanation:

Answer:

c. earth rotates on it tilted axis and orbit around the sun at the same time​

Explanation:

Earth rotation can be defined as the amount of time taken by planet earth to complete its spinning movement on its axis.

This ultimately implies that, the rotation of earth refers to the time taken by earth to rotate once on its axis. One spinning movement of the earth on its axis takes approximately 24 hours to complete with respect to the sun. Thus, this makes us to experience day and night (sun rise and sun set) due to the rotation of planet about its axis.

Hence, the sun rise and set because the earth rotates on it tilted axis and orbit around the sun at the same time​

A hydraulic lift's input pressure is 1200 Pa. If the output force on the other side is 800 N, the output surface area is 0.67m^2

Given the input pressure (P1) = 1200Pa

Output force (F2) = 800N

We know that P= F/A where A is area of cross section

Let the input force be F1 and area is A1

Then by pascals law we say that:

F1/A1 = F2/A2

1200 = 800/A2 (since P1= F1/A1)

A2 = 8/12 = 0.67m^2

Hence the area of other side = 0.67m^2

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\(\pink{\bigstar}\) The acceleration of the wheelchair is \(\large\leadsto\boxed{\tt\purple{0.5625 \: m/s^2}}\)

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

We know,

• Third Equation of Motion:-

\(\pink{\bigstar}\) \(\large\underline{\boxed{\bf\green{v^2 - u^2 = 2as}}}\)

where,

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

• Substituting the values in the Formula:-

➪ \(\sf (1.5)^2 - (0)^2 = 2 \times a \times 2\)

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

➪ \(\sf 2.25 - 0 = 4 \times a\)

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

➪ \(\sf 2.25 = 4 \times a\)

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

➪ \(\sf a = \dfrac{2.25}{4}\)

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

★ \(\large{\bold\red{a = 0.5625 \: m/s^2}}\)

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

Therefore, the acceleration of the wheelchair is 0.5625 m/s².

Based on what you observed, it is possible to estimate the focal length of the concave mirror.

The focal length of a concave mirror is calculated by taking the radius of curvature (R) of the mirror and dividing it by two.

To estimate the focal length, you can measure the distance of the object from the mirror (d1) and the distance of the image from the mirror (d2) and use the mirror formula: 1/f = 1/d1 + 1/d2.

Therefore, by measuring the distance of the object and the image from the mirror and applying the mirror formula, you can estimate the focal length of the concave mirror.

When an object is placed at a distance equal to the focal length of the mirror, the image produced will be clear and in focus. By measuring the distance between the object and the mirror at this point, I was able to estimate the focal length.

It is important to note that this is only an estimation and the actual focal length may be slightly different. However, this method provides a good approximation of the focal length of the concave mirror.

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Generator component within an absorption refrigeration system requires heat transfer from a high temperature source.

The evaporator "buckets" or collects heat from the chilled area. Low pressure causes the "bucket" to undergo a state shift (latent heat transfer) as it takes in heat. The "bucket" of low pressure and heat is then transported to the compressor by the evaporator. The component of the refrigeration system that actually cools things down is called the evaporator. The evaporator is situated in the region to be cooled because its purpose is to absorb heat into the refrigeration system (from where you don't want it to).

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The energy density (energy per unit volume) at a given location in space can be calculated by multiplying it by the energy's velocity. The units of power are split by the resulting vector's area.

What is an illustration of intensity?

The degree, volume, or magnitude of something is its intensity. Examples include fire, emotion, weather, work, or passion. The word "intensity" is occasionally linked to fervor, fire, and violence. It is employed when describing the intensity of something like a flame or possibly a love affair.

What is the level of scientific rigor?

The intensity of a wave is the amount of energy it transports over a surface in a unit of time and area. It is also equal to the energy density times the wave speed. Watts per square meter are typically used to measure it. A wave's strength and amplitude will affect intensity.

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Approximately 3.23 × 10^(12) photons emitted each second, we can use the formula: Number of photons = Power / Energy of each photon

First, we need to convert the power from microwatts to watts:

Power = 1 microwatt = 1 × 10^(-6) watts

Next, we need to calculate the energy of each photon using the equation:

Energy of each photon = Planck's constant × speed of light / wavelength

Given:

Wavelength (λ) = 640 nm = 640 × 10^(-9) meters

Planck's constant (h) = 6.626 × 10^(-34) J·s

Speed of light (c) = 3.00 × 10^(8) m/s

Plugging in the values, we can calculate the energy of each photon:

Energy of each photon = (6.626 × 10^(-34) J·s × 3.00 × 10^(8) m/s) / (640 × 10^(-9) m)

= 3.10 × 10^(-19) J

Now we can calculate the number of photons emitted each second:

Number of photons = Power / Energy of each photon

= (1 × 10^(-6) watts) / (3.10 × 10^(-19) J)

≈ 3.23 × 10^(12) photons

Therefore, approximately 3.23 × 10^(12) photons are emitted each second.

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a concentric ring model in which social groupings are spatially organised in a hierarchy of rings. The upper class resides further away from the center, while the lower class is located closer to it.

The concentric ring model operates on the presumption that cultural content results from the incorporation of original ideas into the creation and/or presentation of music, text, and picture, and that these concepts originate in the fundamental artistic creativity spheres. Burgess' concentric ring model concept envisions growth occurring in a series of concentric rings surrounding the concentric ring model . According to Hoyt's sector model, economic expansion follows transportation corridors.

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When Frank exerts push with a force of 620 N over a filing cabinet with a mass of 60 g. The cabinet doesn’t move. it can be inferred that The static friction force of the floor and cabinet is greater than 620 N.

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The complete question is :

Frank pushes with a force of 620 N on a filing cabinet with a mass of 60 g. The cabinet doesn't move.

What can be inferred?

A. There are no other forces acting on the filing cabinet.

B. The static friction force of the floor and cabinet is greater than 620 N.

C. The net force of the cabinet is greater than 620 N.

D. The friction force of the floor and cabinet is less than 620 N.

The required concentration of the diluted solution is calculated to be 0.158 mol/l.

The relation between volumes and concentrations of solutions is mathematically given as,

M₁ V₁ = M₂ V₂

where,

M₁ is the concentration of initial solution

M₂ is concentration of solution after diluting it

V₁ is the volume of initial solution

V₂ is the volume of solution after diluting

Volume of solution before diluting is 37 ml

V₁ = 37 ml = 37/1000 l = 0.037 l

Concentration of initial solution M₁ = 10.25 mol/l

Volume of solution after diluting V₂ = 2.4 l

Concentration of diluted solution M₂ = ?

Placing the values in the above expression, we have,

M₁ V₁ = M₂ V₂

10.25 × 0.037 = M₂ × 2.4

M₂ = (10.25 × 0.037)/2.4 = 0.158 mol/l

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Latitude of the line will be = 1436.033

Departure of the line will be   = 28.152

Given

let line be = a = 1436. 32

azimuthal be = x = 178° 52' 13''

This line must have two components , one is horizontal component which is its latitude and other will be vertical component which is departure . Resolving both the components we get,

latitude = a*cos(178° 52' 13'')

             = 1436. 32 * cos(178° 52' 13'')

             = 1436. 32 * (- 0.9998)                              

latitude = 1436.033

departure  =  a * sin (178° 52' 13'')

                  = 1436. 32  *  0.0197

  departure  = 28.152

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The surface area of the frustum generated by revolving the line segment joining the points (0, 5) and (7, 7) about the x-axis can be determined using parametrization.

To find the surface area of the frustum, we can use the method of parametrization. The frustum is formed by rotating the line segment about the x-axis, and we can parametrize the curve generated by the rotation.

Let's consider a parameter t that ranges from 0 to 1. We can express the x-coordinate of the curve as x = t * 7 and the y-coordinate as y = 5 + t * 2. The parameter t represents the progression along the line segment, ranging from 0 at the point (0, 5) to 1 at the point (7, 7).

To calculate the surface area, we need to find the differential element of arc length ds. For a curve given by parametric equations x = f(t) and y = g(t), the differential element of arc length can be expressed as ds = \(\sqrt{x} ((dx/dt)^2 + (dy/dt)^2) * dt\).

Substituting the parametric equations into the formula, we have ds = \(\sqrt((7^2 + 2^2)) * dt = sqrt(53) * dt.\)

To find the surface area of the frustum, we integrate ds from t = 0 to t = 1: \(Area =\int\limits^0_1 \, dx \sqrt(53) * dt.\)

Integrating this expression yields the surface area of the frustum. Therefore, by using parametrization and evaluating the integral, the surface area of the frustum generated by revolving the line segment (0, 5) to (7, 7) about the x-axis can be determined.

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Answer: B. The geomagnetic north is similar to the south pole of a magnet

Explanation:

Thermal system is used on some electric and hybrid vehicles to cool the power electronics and charger modules.

What is thermal system?

An isolated system has no interaction with the rest of the physical universe, a closed system can only exchange heat and work, and an open system can also exchange mass. In thermodynamics, a system is the portion of the physical universe that the observer chooses to analyse separately from the rest.

A thermal system, on the other hand, is a complex assembly of coupled components, some of which are thermal, that exhibits a common structured behavior  for instance, a refrigerator consists of pipes, a compressor, an electric motor, heat exchangers, valves, insulation, a casing, doors, a lamp, and other components that interact to achieve the internal goal of producing cold.

The interior space or the refrigerant are thermodynamic systems, whereas a refrigerator is a thermal system. While large thermal systems, like a refrigerated store, are constructed on the job site, small thermal systems, like a refrigerator, typically come fully installed from the manufacturer (although a straightforward split-air-conditioning system needs installation). Thermal systems often require services such as fuel supply, flue stack, water intake and exit, air intake and exit, and electrical supply (for power or at least for control).

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Answer:corrosion (i believe)

Explanation:

Answer

Mix baking soda and salt with hot water and cover everything with it. The proportions are not crucial, but about 1 tablespoon of salt and 1 tablespoon of baking soda to 3 dl water should do the trick. Lightly tarnished objects should clean up in a few minutes, and you just rinse them of and dry them.

Explanation:

The response to the ionic bond and salts is related as they have an electrical charge each positive and negative.

The ionic bond is a type of chemical bond that occurs between two ions of opposite charges, typically a metal cation and a non-metal anion. This bond is formed through the transfer of one or more electrons from the metal to the non-metal, resulting in the formation of a stable, neutral compound known as an ionic compound or salt.

Ionic compounds are typically solids at room temperature and have high melting and boiling points. They also tend to be brittle and have high electrical conductivity in their molten or aqueous states. Examples of common ionic compounds include sodium chloride (NaCl), calcium carbonate (CaCO3), and magnesium sulfate (MgSO4).

In summary, the ionic bond is formed through the transfer of electrons between metal and non-metal ions, resulting in the formation of stable ionic compounds or salts.

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We have: \(I=\frac{U}{R}=\frac{120}{20}=6A\)

ok done. Thank to me :>

Answer:

The Current is 6 Ampere.

Step-by-step explanation:

Given :

To Find :

Using Formula :

\( \star{\small{\underline{\boxed{\sf{ I = \dfrac{V}{R}}}}}}\)

Solution :

Substituting all the given values in the formula to find Current :

\({\dashrightarrow{\pmb{\sf{ I = \dfrac{V}{R}}}}}\)

\({\dashrightarrow{\sf{ Current = \dfrac{Voltage}{Resistance}}}}\)

\({\dashrightarrow{\sf{ Current = \dfrac{120}{20}}}}\)

\({\dashrightarrow{\sf{ Current = \cancel{\dfrac{120}{20}}}}}\)

\({\dashrightarrow{\sf{ Current = 6A}}}\)

\({\star{\underline{\boxed{\sf{\red{ Current = 6A}}}}}}\)

Hence, the Current is 6 Ampere.

\(\rule{300}{1.5}\)

we can say that the red appearing star is closer to us but is cooler than the blue appearing star. So, the correct answer is "the red star is closer and cooler."

When we say that a star has a larger parallax, it means that the star appears to shift its position more in the sky when viewed from different locations on Earth. Parallax is used to determine the distance of a star from Earth - the larger the parallax, the closer the star is to us. In this case, the red appearing star has a parallax three times as large as the blue appearing star. Therefore, we can conclude that the red star is closer to us than the blue star. Now, when it comes to the temperature of stars, their color is an important indicator. Generally, blue stars are hotter than red stars. Therefore, if we assume that both stars are of similar size and brightness, we can conclude that the blue appearing star is hotter than the red appearing star.

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A horizontal force of 68.56 N is required to initiate the movement of the cylinder and the friction force at point B is 98 N.

To find the force P necessary to initiate movement of the cylinder, we can use the equation:

P = mg * tan(θ) + μmg * cos(θ)

where m is the mass of the cylinder, g is the acceleration due to gravity, θ is the angle of the wedge, and μ is the coefficient of static friction between the cylinder and the wedge.

Substituting the values given, we get:

P = 40 kg * 9.8 m/s^2 * tan(10°) + 0.25 * 40 kg * 9.8 m/s^2 * cos(10°)

P = 68.56 N

To find the friction force FB at point B, we need to first determine if slipping occurs at point A or point B. Assuming that slipping occurs at point B, we can calculate the friction force as:

FB = μN

where N is the normal force acting on the cylinder at point B. The normal force is equal to the weight of the cylinder, which is:

N = mg = 40 kg * 9.8 m/s^2 = 392 N

Substituting this into the equation for FB, we get:

FB = 0.25 * 392 N = 98 N

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A horizontal force of 68.56 N is required to initiate the movement of the cylinder and the friction force at point B is 98 N.

To find the force P necessary to initiate movement of the cylinder, we can use the equation:

P = mg * tan(θ) + μmg * cos(θ)

where m is the mass of the cylinder, g is the acceleration due to gravity, θ is the angle of the wedge, and μ is the coefficient of static friction between the cylinder and the wedge.

Substituting the values given, we get:

P = 40 kg * 9.8 m/s^2 * tan(10°) + 0.25 * 40 kg * 9.8 m/s^2 * cos(10°)

P = 68.56 N

To find the friction force FB at point B, we need to first determine if slipping occurs at point A or point B. Assuming that slipping occurs at point B, we can calculate the friction force as:

FB = μN

where N is the normal force acting on the cylinder at point B. The normal force is equal to the weight of the cylinder, which is:

N = mg = 40 kg * 9.8 m/s^2 = 392 N

Substituting this into the equation for FB, we get:

FB = 0.25 * 392 N = 98 N

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Answer:

1080000

Explanation:

300 x 60s=18000m/minute

18000 x 60min=1080000m/h

Answer:

it will decrease speed

Explanation:

Answer:

it's b

Explanation: