The force of gravity is
_m/s2

Answer:

the wood for the stick is less dense so it would be easy to light on fire and maintain a fire on it, unlike a wood log witch will take a larger activation energy to have a fire last on it for a period of time.

Answer: Glare appears on a computer screen when light from the surroundings reflects off of the screen's surface. Some computer screens have a special coating to reduce glare. Which best explains how the coating works? The surface of the coating is rough, so light that shines on it gets scattered in many directions.

HOPE THIS HELPS IF NOT SORRY

The surface of the coating is rough, so light that shines on it gets scattered in many directions best explains how the coating works.

A coating is a protective layer that is put to the surface of an item, The coating can be applied for ornament and jewelry.

Paints are a type of coating that protect the surface of the material and also used for its decoration  as well as also used in corrosion prevention.

When any light is to fall on any rough surface in that condition, the light get scattered in many directions.

The surface of the coating is rough, so light that shines on it gets scattered in many directions best explains how the coating works.

Hence, option B is correct.

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Explanation:

Amplitude, in physics, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path. ... Waves are generated by vibrating sources, their amplitude being proportional to the amplitude of the source.

Answer:

If the wind speed increased, the plane's ground speed would be affected.

Explanation:

The ground speed of a plane is the speed at which it is traveling relative to the ground. Wind speed affects the plane's airspeed, which is the speed at which it is traveling relative to the air. If the wind speed increases, it can either help or hinder the plane's ground speed, depending on whether the wind is a headwind or a tailwind. A headwind can slow down the plane's ground speed, while a tailwind can increase it.

La longitud final del puente de acero es 100.018 metros.

Asumamos que la dilatación térmica experimentada por el puente de acero es pequeña, de modo que podemos emplear la siguiente aproximación lineal para determinar la longitud final del puente de acero (\(L\)), en metros:

\(L = L_{o}\cdot [1+\alpha\cdot (T_{f}-T_{o})]\) (1)

Donde:

Si tenemos que \(L_{o} = 100\,m\), \(\alpha = 11.5\times 10^{-6}\), \(T_{o} = 8\,^{\circ}C\) y \(T_{f} = 24\,^{\circ}C\), entonces la longitud final del puente de acero es:

\(L = (100\,m)\cdot [1+(11.5\times 10^{-6})\cdot (24\,^{\circ}C - 8\,^{\circ}C)]\)

\(L = 100.018\,m\)

La longitud final del puente de acero es 100.018 metros.

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The ratio of the ideal projectile distance on the moon to the same projectile distance on earth, moon/back, is approximately (the acceleration of gravity on the moon is 1.62 m/s², about one-sixth of the acceleration due to gravity on earth. for a given initial velocity v0  , and the specified launch angle θ0) is ⅙ (option B)

The initial velocity, launch angle, and acceleration due to gravity all affect a projectile's range. The formula for an ideal projectile's range is as follows:

R = v0²sin (2θ0) / g

Where,

v0 = the initial velocity (m/s)

θ0 = the launch angle

g = the acceleration due to gravity

The acceleration caused by gravity is 1.62 m/s² for the moon and 9.8 m/s² for the earth. Ranges on the moon and ranges on earth can be expressed as follows:

R moon / R earth = (1.62 sin (2θ0)) / g

sin (2θ0) = 1.62 / 9.8

Approximately ⅙

Consequently, an ideal projectile's range on the moon is around a sixth of its range on Earth.

The question is incomplete, it should be:

The acceleration due to gravity on the moon is 1.62 m/s², approximately a sixth of the value on earth. for a given initial velocity v0, and a given launch angle θ0, the ratio of the range of an ideal projectile on the moon to the range of the same projectile on earth, rmoon/rearth, will be approximately?

A. ⅓

B. ⅙

C. 1

D. 1/12

E. ⅕

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The runaway star is farther away from Earth than the sun. the sun is closer to Earth than the runaway star if it seems brighter than the star and the star is 90 times bigger than the sun.

An exceptionally high proper motion, known as a runaway star, is a star that was supposed to have been ejected from a nearby binary system when its companion star exploded supernova. Beyond the Milky Way, these runaway stars seem to be widespread, especially in massive galaxy clusters.

Astronomers have found hundreds of billions of runaway stars in the Virgo cluster. The Milky Way's sun and all of its stars are revolving around its nucleus. Although there are some little local motions within this broader stream of stars, it is largely orderly. Compared to the sun, the runaway star is closer to Earth.

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Answer:

The centripetal acceleration of car is 8 m/s².

Explanation:

The ratio of an object's mass to volume is known as its density. Density is defined as the product of mass and volume, or D = m/v. Because of the size, mass, and arrangement of each substance's atoms or molecules, each substance has a unique characteristic density.

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Answer:

f = 0.365 Hz

Explanation:

The angular velocity of a simple pendulum is

           w = \(\sqrt{g/L}\)

angular velocity and frequency are related

           w = 2π f

we substitute

           2π f = \(\sqrt{g/L}\)

Let's find the initial length of the pendulum

            L = \(\frac{g}{4\pi^2 } \ f_o\)

            L₀ = \(\frac{9.8}{4 \pi ^2} \ 0.4\)

            L₀ = 0.6206 m

Indicates that the length of the chord triples

             L = 3 L₀

             L = 3 0.6206

             L = 1.8618 m

let's find the frequency

             f = \(\frac{1}{2\pi } \ \sqrt{\frac{9.8}{1.8618} }\)

             f = 0.365 Hz

Waveform conversion circuits, also known as signal conversion circuits, are electronic circuits designed to convert one form of an electrical waveform into another form. Waveform conversion circuits find application in a wide range of fields where the modification, conditioning, or transformation of electrical waveforms is necessary to achieve specific objectives.

These circuits modify the characteristics of an input signal to achieve a desired output waveform. The conversion can involve changing the amplitude, frequency, phase, or shape of the waveform.

Waveform conversion circuits are used in various applications where it is necessary to transform signals to match specific requirements. Here are some common areas where waveform conversion circuits are typically used:

Audio Processing: In audio applications, waveform conversion circuits are used to modify audio signals for various purposes. This includes amplifying, filtering, equalizing, or modulating audio waveforms to enhance sound quality, remove noise, or achieve specific audio effects.

Power Electronics: Waveform conversion circuits are extensively employed in power electronics systems for converting and conditioning electrical power. These circuits are used in devices such as inverters, converters, rectifiers, and voltage regulators to transform power waveforms, adjust voltage or current levels, and ensure efficient power transfer.

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Answer:

The final speed of the bicyclist is 15.44 m/s.

Explanation:

Given;

initial velocity, u = 0

time of motion, t = 4.8 s

distance covered, d = 37.0 m

The acceleration of the bicyclist is calculated as;

d = ut + ¹/₂at²

37 = 0 + ¹/₂(4.8)²a

37 = 11.52a

a = 37 / 11.5

a = 3.22 m/s²

The final speed of the bicyclist is given as;

v² = u² + 2ad

v² = 0 + 2(3.22)(37)

v² = 238.28

v = √238.28

v = 15.44 m/s

Therefore, the final speed of the bicyclist is 15.44 m/s.

According to the given question, the work done is -215 J. Since the heat is absorbed from the surroundings (positive q value), the reaction is endothermic.

As the energy of the system decreases, this reaction is exothermic, meaning it releases heat to the surroundings.
In this gas expansion, 87 J of heat is absorbed from the surroundings, indicating a positive heat value (q = +87 J). The energy of the system decreases by 128 J, which means the change in internal energy (ΔU) is negative (ΔU = -128 J). To calculate the work done (w), we can use the first law of thermodynamics:

ΔU = q + w

Substitute the given values into the equation:

-128 J = (+87 J) + w

To solve for w, subtract 87 J from both sides:

w = -128 J - 87 J

w = -215 J

The work done is -215 J. Since the heat is absorbed from the surroundings (positive q value), the reaction is endothermic.

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An electromagnetic wave with a wavelength about the same as the diameter of an apple, which is approximately 10 centimeters, would be a radio wave.

Radio waves are part of the electromagnetic spectrum, which includes a wide range of wavelengths and frequencies. The spectrum is divided into different categories, such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Radio waves have the longest wavelengths and lowest frequencies among the categories of the electromagnetic spectrum. They are used for various purposes, such as communication, broadcasting, and navigation.

Radio waves with a wavelength of about 10 centimeters fall into the Ultra High Frequency (UHF) band, which ranges from 300 MHz to 3 GHz. UHF radio waves are utilized in television broadcasting, cell phone communication, and satellite systems. In summary, an electromagnetic wave with a wavelength comparable to the diameter of an apple would be classified as a radio wave, specifically within the UHF band. This type of radio wave is commonly used in modern communication and broadcasting technologies.

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Explanation:

\(C.) \: Conduction \: \\ \\ = > it \: is \: a \: process \: of \: transferring \: \\ \\ of \: heat \: from \: one \: object \: to \: another \\ \\ when \: they \: are \: in \: contact \: \)

By the conduction process the heat reaches the pin.Option C is correct.

The term "heat transfer" refers to the movement of heat. The flow of heat across a system's boundary is due to a temperature differential between the system and its surroundings.

Conduction is the type of heat transfer occurs mainly in solid or by contact.In the given condition the rod is then heated continuously at one end and the pins fall off in the order 4, 3, 2, 1​.

By the conduction process the heat reaches the pin.

Hence option C is correct.

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Answer:

9/20

Explanation:

According to this question, Lucy and JoJo need to make 140 cupcakes for the school dance. Lucy made 35 of the cupcakes while JoJo made 42 cupcakes. This means that in total, (42 + 35) cupcakes has been made by both Lucy and JoJo

That is, 77 cupcakes out of 140 has been made. This is 77/140 i.e. 11/20

Since 77/140 cupcakes has been made, Lucy and JoJo still need to make;

140 - 77 = 63 cupcakes to meet up their target for the school dance.

This means that the fraction left is 63/140

63/140 in its lowest term is 9/20

Hence, 9/20 of the cupcakes still need to be made by Lucy and JoJo.

Explanation: 140 - 35 = 105 - 42 = 63

yare yare daze

I use tusk act 4 main

Explanation:

Paper calculate the area of the given irregular. Figure take area of one square to be one square centimeter. Step one count the complete squares as one let us color the complete squares Orange.

Answer:

The magnets are in the outer part not the middle

Explanation:

i know

Answer:

The answer should be light or other electromagnetic radiation

Explanation:

Such as x-rays or other things like that.

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-Justin:)

Answer:

c. long chains of carbon molecules

Maximum horizontal displacement is 59.92m and Maximum vertical displacement is  22.5m.

The definition of displacement is the modification of an object's position. It has a direction and magnitude and is a vector quantity. It is shown as an arrow that travels from the initial position to the conclusion. An object's position changes, for instance, if it moves from position A to

Given initial velocity, v = (140+ 21) m/s

Hence horizontal component of v is \(v_{x}\) = 14m/s

Vertical component of v is \(v_{y}\) = 21m/s

This problem can be solved using the equations of motion related

to projectile motion,

Hang time is the double of the time required to attain maximum

vertical displacement.

i.e Hang time t = 2 x \(v_{y}\)/g

Hang time t = 2 x 21/9.8 = 4.28s.

Maximum horizontal displacement = \(v_{x}\)t (no horizontal acceleration)

Maximum horizontal displacement = 14 × 4.28 = 59.92m

Maximum vertical displacement = \(v^{2} _{y}\)/2y

Maximum vertical displacement = 21²/2×9.8 = 22.5m

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Answer:

Displacement a combination of distance

Explanation:

I'm not sure eh

At the equilibrium position in SHM, the acceleration of the mass is zero, the speed is at a maximum, and the potential energy is zero. Option C is correct choice.

In simple harmonic motion (SHM), a mass attached to a spring oscillates back and forth around its equilibrium position. At the equilibrium position, the displacement of the mass from its equilibrium position is zero, and the restoring force of the spring is also zero. This means that the mass does not experience any net force at this point, and thus its acceleration is zero.

At the equilibrium position, the mass has maximum speed because it has been accelerated towards the equilibrium position by the restoring force of the spring, and then decelerated by the same force as it passes through the equilibrium position. At this point, all of the potential energy stored in the spring has been converted into kinetic energy. Therefore, the kinetic energy of the mass is a maximum, and the potential energy is zero. Option c is  correct choice.

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Metals are opaque to electromagnetic radiation due to their ability to absorb electromagnetic radiation over a wide range of frequencies, particularly in the ultraviolet and visible regions.

Metals are opaque to electromagnetic radiation because they have the ability to absorb electromagnetic radiation over a wide range of frequencies, particularly in the ultraviolet and visible regions. A metal is a good conductor of electricity, which means that the electrons in its atoms are free to move around the metal's structure and form a "sea" of electrons, which is what causes the metal's characteristic luster.

Metallic bonding occurs when the metal atoms share their outermost electrons with each other, forming a crystal lattice. The delocalized electrons move freely throughout the metal lattice, and they are responsible for a metal's electrical conductivity and thermal conductivity.

Metals' ability to absorb electromagnetic radiation is linked to the behavior of their electrons. Electrons in a metal's lattice can be excited by absorbing energy from electromagnetic radiation, and the energy is subsequently lost when the electrons relax back to their original energy states.

Metals are opaque because their electrons absorb so much energy from the electromagnetic radiation that the energy is completely absorbed by the metal before it has a chance to pass through it. Thus, metals appear opaque to most electromagnetic radiation.

This happens when the electrons in a metal's structure absorb photons (particles of light). They take the energy from the photons and use it to move around the metal's structure, which causes the metal to heat up. If the metal absorbs enough photons, it can become hot enough to emit light of its own.

In summary, metals are opaque to electromagnetic radiation due to their ability to absorb electromagnetic radiation over a wide range of frequencies, particularly in the ultraviolet and visible regions.

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Answer:

there less and less gravity while your going farther and farther

The approximate number of wavelengths of light that can travel in one direction within a retroreflecting bead that has a diameter of 5 ×\(10^-^5\) m is 167.

This calculation is based on the formula n = L/λ, where n is the number of wavelengths, L is the length of the object, and λ is the wavelength of light. To calculate the wavelength of light, we use the formula c = λf, where c is the speed of light and f is the frequency of light.

In this problem, we are given the diameter of the retroreflecting bead, which is assumed to be spherical. Therefore, its length is equal to its diameter, which is 5 × \(10^-^5\)m. We are also given the speed of light, which is 3 × \(10^8\) m/s, and an approximation of the frequency of light, which is \(10^1^5\) Hz.

Using the formula c = λf, we can solve for the wavelength of light:

λ = c/f = (3 ×\(10^8\) m/s)/\((10^1^5\)Hz) = 3 ×\(10^-^7\)m

Finally, we can use the formula n = L/λ to calculate the approximate number of wavelengths of light that can travel in one direction within the retroreflecting bead:

n = L/λ = (5 ×\(10^-^5\) m)/(3 ×\(10^-^7\) m) = 166.67 ≈ 167

Therefore, the approximate number of wavelengths of light that can travel in one direction within a retroreflecting bead that has a diameter of 5 ×\(10^-^5\) m is 167.

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The acceleration of the car is 0.8049\(m/s^{2}\).It takes 13.802s to travel the 230 m.

In mechanics, acceleration refers to the rate at which an object's velocity with respect to time varies. Acceleration is a vector quantity (in that they have magnitude and direction). The direction of an object's acceleration is determined by the direction of the net force acting on it. Newton's Second Law states that the combined effect of two factors determines how much an item accelerates: 

(i) It follows that  the magnitude of the net balance of all external forces acting on the object is directly proportional to the magnitude of this net resulting force, and

(ii) the mass of the thing, depending on the materials out of which it is constructed, is inversely proportional to the mass of the thing.

Calculations:

40 km/hr ----- 11.11m/s

80 km/hr ----- 22.22m/s

\(v^{2} -u^{2} =2as\\22.22^{2} - 11.11^{2} = 2 x a x 230\\ 370.296=460a\\ a= 0.8049m/s^{2} \\\)

Time taken

v-u=at

22.22-11.11= 0.8049 x t

t=13.802s

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