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4 years ago

To Which of the following represents the relative order of wavelengths from least

Physics

1 answer:

Alex787 [66]4 years ago

5 0

Answer:

A) ultraviolet light ---> violet light ----> red light-----> infrared light

Explanation:

We know that the electromagnetic spectrum with the wavelength from least to greatest is (also refer attachment)

gamma ray
X- rays
Ultra-violet
Visible

Violet

Indigo

Blue

Green

Yellow

Orange

Red

Infra-red

Microwave
Radio wave

Hence the relative order of wavelengths from least to greatest in the electromagnetic spectrum is

A) ultraviolet light ---> violet light ----> red light-----> infrared light

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An object starts from rest at the origin (x0 = 0) and travels in a straight line with a constant acceleration (a = constant). Su

agasfer [191]

Answer:

$a=(6.8)\ m/s^2$

Explanation:

Given that,

An object starts from rest at the origin (x₀ = 0) and travels in a straight line with a constant acceleration (a = constant).

The relation between the position (x) and time (t) is given by :

$x=(3.4t^2)\ m/s^2$

Let v is the velocity of the object.

$v=\dfrac{dx}{dt}$

$v=\dfrac{d(3.4t^2)}{dt}$

$v=(6.8t)\ m/s$

Let a is the acceleration of the object. It is given by :

$a=\dfrac{dv}{dt}$

$a=\dfrac{d(6.8t)}{dt}$

$a=(6.8)\ m/s^2$

So, the acceleration of the object is $(6.8)\ m/s^2$ . Hence, this is the required solution.

4 0

3 years ago

Which color of light comes from a greater energy transition?<br> 1. Red 2. Yellow 3. Green 4. Blue

Nataly [62]

Answer:

D.) Blue

Explanation:

because Blue is a higher frequency and therefore corresponds to a higher energy level transition.

I hope this helped you :)

6 0

3 years ago

Oxygen and hydrogen are kept under the same temperature and pressure. Oxygen molecule is 16 times more massive than hydrogen one

olya-2409 [2.1K]

Answer:

The average speed of molecule of oxygen is one-fourth of the speed of the hydrogen molecule.

Explanation:

The kinetic energy of gas molecule is given by following equation:

$K.E = \frac{3}{2} KT$

Since the temperature (T) is constant for both molecules. Therefore, there kinetic energies will also be the same. Therefore,

$K.E_{O_2} = K.E_{H_2}\\\frac{1}{2}m_{O_2}v_{O_2}^2 = \frac{1}{2}m_{H_2}v_{H_2}^2 \\\\but,\\\\m_{O_2} = 16m_{H_2}\\\\therefore,\\16 m_{H_2}v_{O_2}^2 = m_{H_2}v_{H_2}^2\\\\\\taking square root on both sides, we get:\\4v_{O_2} = v_{H_2}\\\\v_{O_2} = \frac{v_{H_2}}{4}$

<u>The average speed of molecule of oxygen is one-fourth of the speed of the hydrogen molecule.</u>

7 0

3 years ago

Which is a “big idea” for space and time? Energy can be transferred but not destroyed. Forces describe the motion of the univers

cluponka [151]

Answer:

Explanation:

That Universe Consists of Matter

4 0

4 years ago

Object A has a mass of 10 kg and is moving at a velocity of 2.0

luda_lava [24]

Answer:20kgm/s

Explanation:

Mass=10kg

Velocity=2m/s

Momentum=mass x velocity

Momentum=10 x 2

Momentum=20

Momentum=20kgm/s

4 0

3 years ago