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4 years ago

What is the difference between luxury and a necessity

1 answer:

7 0

Luxury is an antonym of necessity. Necessity is an antonym of luxury.
As nouns the difference between necessity and luxury is that necessity is the quality or state of being necessary, unavoidable, or absolutely requisite while luxury is very wealthy and comfortable surroundings.

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Jason while driving on Kukum highway at 70 m.s – 1 seeing the traffic light turn red, he applies the brake and comes to rest in

strojnjashka [21]

Answer:

35 m/s^2

Explanation:

Decceleration = change in velocity / change in time

= ( 70 m/s ) / 2 seconds = 35 m/s^2

DEcceleration = 35 m/s^2

Jason's speed changes by - 35 m/s^2

6 0

2 years ago

What factors does not influence the rate of chemical weathering?

Svetradugi [14.3K]

Answer:

Exposure to the Atmosphere

Composition of Rock

Surface area of the rock

Climate

Time

Explanation:

Exposure to the Atmosphere - how much of the rock mass is exposed to the environment affects how quickly the rock will be weathered by that very environment

Composition of Rock - what kind of minerals the rock is made of, how easy it is for those minerals to disintegrate and how quickly the react with water and air.

Surface area of the rock - a rick that has a wider surface or smaller pieces is more exposed than one that is a lump. A larger surface area increases the rate of weathering

Climate - if a rock is an area where there are high temperatures or very low temperatures, the rate of weathering is likely to increase. A similar point can be made about a region that experiences a lot of rain.

Time - the longer the rock is exposed to harsh conditions, the more it will experience weathering

4 0

3 years ago

Two loudspeakers on a concert stage are vibrating in phase. A listener 50.5 m from the left speaker and 26.0 m from the right on

mixer [17]

To solve this problem, it is necessary to apply the concepts related to the constructive interference caused by the wavelengths of the sound traveling in the air.

From the definition of constructive interference we know that

$\Delta x = n \lambda \rightarrow \lambda = \frac{\Delta x}{n}$

Where

$\Delta x =$ Distance between speakers

n = Integer which represent he number of repetition of the spectrum

$\lambda =$ Wavelength

At the same time the frequency is subject to the form,

$f = \frac{v}{\lambda}$

Where

$v = 343m/s \rightarrow$ Velocity (of the sound at this case)

From our given values we have to $\Delta x$ is

$\Delta x = 50.5m-26m$

$\Delta x = 24.5m$

The wavelength would be subject to the sound spectrum therefore for n = 1,

$\lambda = \frac{\Delta x}{n}$

$\lambda = \frac{24.5}{1}$

$\lambda = 24.5m$

Then the frequency would be,

$f = \frac{v}{\lambda}$

$f = \frac{343}{24.5}$

$f = 14Hz$

For the value of n = 2,

$\lambda = \frac{\Delta x}{n}$

$\lambda = \frac{24.5}{2}$

$\lambda = 12.25m$

Then the frequency would be,

$f = \frac{v}{\lambda}$

$f = \frac{343}{12.25}$

$f = 28Hz$

For n = 3,

$\lambda = \frac{\Delta x}{n}$

$\lambda = \frac{24.5}{3}$

$\lambda = 8.167m$

Then the frequency would be,

$f = \frac{v}{\lambda}$

$f = \frac{343}{12.25}$

$f = 42Hz$

From the frequencies obtained we can identify that the two lowest frequencies that can be heard due to constructive interference are 28Hz and 42Hz

5 0

3 years ago

What is dispersion, and how is it related to diffraction and refraction?

iragen [17]

Refraction is simply the bending of light when it moves from one material into another. If light is beamed at 90° to a surface, no bending happens. But if you shine the light at an angle it will bend one way or another.

    Diffraction is a process in which a beam of light travels through a gap or around a barrier, and spreads out as a result.

<span>   Dispersion is the property that the speed of light in a transparent material is different for different wavelengths. Thus the index of refraction is likewise different.</span>

8 0

3 years ago

If two identical cars are traveling at different velocities, which car has the greatest momentum

vodomira [7]

Answer:

The one with highest velocity

Explanation:

The momentum of an object is given by

$p=mv$