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3 years ago

1. Will biogas burn with a flame. why?

2 answers:

8 0

1. The reason shy biogas burns with a flame is that biogas is a combustible gaseous fuel. Biogas is made up of a mixture of methane (CH4) and carbon dioxide (CO2), along with other trace gases. Biogas is commonly made from animal manure, sludge in wastewater and landfills that contain organic waste.

2. When iron is heated strongly, it becomes red and hot, but it does not burn with a flame. This is because in order for us to be able to burn iron we would have to be able to heat the surface of iron to its ignition temperature. However, when we heat iron, it does not reach its ignition temperature, and therefore does not burn.

vagabundo [1.1K]3 years ago

6 0

1 - Biogas is composed of flammable gases such as methane. This means It can combust.

2 - Iron itself cannot catch fire due to it´s physical make-up. Metals in general tend to not catch fire.

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Determine the energy required to accelerate an electron between each of the following speeds. (a) 0.500c to 0.900c MeV (b) 0.900

Aleonysh [2.5K]

Answer:

The energy required to accelerate an electron is 0.582 Mev and 0.350 Mev.

Explanation:

We know that,

Mass of electron $m_{e}=9.11\times10^{-31}\ kg$

Rest mass energy for electron = 0.511 Mev

(a). The energy required to accelerate an electron from 0.500c to 0.900c Mev

Using formula of rest,

$E=\dfrac{E_{0}}{\sqrt{1-\dfrac{v_{f}^2}{c^2}}}-\dfrac{E_{0}}{\sqrt{1-\dfrac{v_{i}^2}{c^2}}}$

$E=\dfrac{0.511}{\sqrt{1-\dfrac{(0.900c)^2}{c^2}}}-\dfrac{0.511}{\sqrt{1-\dfrac{(0.500c)^2}{c^2}}}$

$E=0.582\ Mev$

(b). The energy required to accelerate an electron from 0.900c to 0.942c Mev

Using formula of rest,

$E=\dfrac{E_{0}}{\sqrt{1-\dfrac{v_{f}^2}{c^2}}}-\dfrac{E_{0}}{\sqrt{1-\dfrac{v_{i}^2}{c^2}}}$

$E=\dfrac{0.511}{\sqrt{1-\dfrac{(0.942c)^2}{c^2}}}-\dfrac{0.511}{\sqrt{1-\dfrac{(0.900c)^2}{c^2}}}$

$E=0.350\ Mev$

Hence, The energy required to accelerate an electron is 0.582 Mev and 0.350 Mev.

4 0

4 years ago

Assume the light wave directed at the paper is white light and the paper contains pigments that absorb the wavelengths of red-or

Nastasia [14]

Answer: A) black

Explanation:

Let's begin by explaining that a primary color is one that can not be obtained by mixing any other color. In this sense, red, green and blue are the primary colors of light (using the additive theory of color), but not the primary colors of the pigments.

For the case of pigments (using the subtractive color theory) the primary colors are cyan, magenta and yellow. This is because the pigments generally absorb more light than they reflect (they absorb certain wavelengths and reflect others). Therefore, the color that a given object seems to have depends on which parts of the visible electromagnetic spectrum are reflected and which parts are absorbed.

Hence, according to the subtractive theory, if we join the three primary colors of the pigments, we will obtain the black. Unlike the additive theory of light, in which if we join the three primary colors we will get white light.

This means:

If a paper that absorbs red-orange-yellow-green-blue-indigo-violet is illuminated with white light, the collors our eyes will see is black.

7 0

4 years ago

Read 2 more answers

Quantitative data is _____________ Lesson 1.11

alex41 [277]

Answer:

gathered by using measurement tools and math

Explanation:

Quantitative data is often gathered by using measurement tools and math.

A quantitative data set is assigned values and numbers in order to solve a problem or for the purpose of a study.

Each data set has a unique numerical value and can be counted.
Qualitative data set does not use numerals and numbers.
It engages the senses to make some scientific deductions.
Examples are measurement of volume, distance, length, time, number of moles e.t.c
Qualitative data sets include taste, smell, color e.t.c

5 0

3 years ago

Object 1 of mass m moves with speed v in the positive direction. Object 2 of mass 3 m moves with speed 4 v in the negative x-dir

Klio2033 [76]

Answer:

This means that the kinetic energy of second object is 48times that of the first object

Explanation:

Kinetic energy is the energy possessed by a body by virtue of its motion e.g motion of an accelerating car. Mathematically,

Kinetic energy = 1/2mv² where;

m is the mass of the object

v is the velocity of the object

If Object 1 of mass m moves with speed v in the positive direction, its kinetic energy will be expressed as;

K1 = 1/2mv²

For Object 2 of mass 3m moving with speed 4v in the negative x-direction, its kinetic energy can be expressed as;

K2 = 1/2(3m)(4v)²

K2 = 1/2(3m)(16v²)

K2 = (3m)(8v²)

K2 = 24mv²

To compare the kinetic energy of both bodies, we will take the ratio of K2:K1 to have;

K2/K1 = 24mv²/(1/2)mv²

K2/K1 = 24/(1/2)

K2/K1 = 48

K2 = 48K1

This means that the kinetic energy of second object is 48times that of the first object and moving in the negative x direction since the body of mass 3m initially moves in the negative x direction.

3 0

4 years ago

Select the social reforms that Sociology has influenced in some way.

Inessa [10]

Increased accessibility and accommodation for people with physical handicaps. Option D

<h3>What is sociology?</h3>

Sociology is the branch of science that deal with the study of the society and human dynamics. It also deals with dynamics of the human society. It also deals with social institutions.

Thus, the social reforms that Sociology has influenced in some way is increased accessibility and accommodation for people with physical handicaps.

Learn more about sociology:brainly.com/question/11098307

#SPJ1

4 0

2 years ago