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3 years ago

What is happening when an oxygen molecule is formed from two separate oxygen atoms?

1 answer:

6 0

Two from each oxygen atom. For examples of covalent bonding are water (H2O), and carbon dioxide (CO2). Covalent compounds are mostly gases or liquids with low melting points.

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: Modeling Chemical Reactions

77julia77 [94]

Answer:

A Matter is not created or destroyed and the same amount of mass remains

Explanation:

In a chemical reaction, according to the law of conservation of matter, "matter is neither created nor destroyed and the same amount of mass remains in such a process".

New kinds of products are formed in a chemical reaction because they undergo chemical changes.
The chemical changes results in energy changes and formation of new kinds of substances.
Based on the law of conservation of matter, mass is constant.
Mass is not lost or gained.

8 0

3 years ago

The sports car has a mass of 1.5 Mg Mg and a center of mass at G. Determine the shortest time it takes for it to reach a speed o

mezya [45]

Answer:

$\Delta t = 17.041\,s$

Explanation:

The figure of the problem is included below as attachment. The equations of equilibrium are presented below:

$\Sigma F_{x} = -\mu\cdot N_{1} = m\cdot a$

$\Sigma F_{y} = N_{1} + N_{2} - m\cdot g = 0$

$\Sigma M_{G} = N_{1}\cdot x_{1} - N_{2}\cdot x_{2} - \mu\cdot N_{1}\cdot y_{1} = 0$

The system of equations are:

$-0.2\cdot N_{1} = (1500\,kg)\cdot a$

$N_{1} + N_{2} - (1500\,kg)\cdot \left(9.807\,\frac{m}{s^{2}}\right) = 0$

$N_{1} \cdot [(0.75\,m)-0.2\cdot (0.35\,m)] - N_{2}\cdot (1.25\,m) = 0$

The solution of the system is:

$N_{1} = 9780.918\,N$ , $N_{2} = 4929.582\,N$ and $a = - 1.304\,\frac{m}{s^{2}}$

The shortest time to reach a speed of 80 km/h is:

$\Delta t = \frac{22.222\,\frac{m}{s}-0\,\frac{m}{s}}{1.304\,\frac{m}{s^{2}} }$

$\Delta t = 17.041\,s$

7 0

4 years ago

"Electromagnetic radiation travels or propagates through space in the form of a wave but can interact with matter as a particle

natka813 [3]

Answer:

"Electromagnetic radiation travels or propagates through space in the form of a wave but can interact with matter as a particle of energy called a photon. This dual nature is referred to as" <u>Wave particle duality</u> (answer)

Explanation:

Electromagnetic radiation is created when an atomic particle, such as an electron, is accelerated by an electric field, causing it to move, and it is a form of energy that spreads as both magnetic and electrical waves that travels in vessels of energy called photons.

All types of electromagnetic radiation travel at the speed of light, radiation can be also described in terms of particles of energy, called photons. Electromagnetic radiation is generated when an electrical charge is accelerated. The acceleration produces oscillating electric and magnetic fields. Electromagnetic radiation ranges from gamma rays with very short wavelength to long radio waves. Electromagnetic radiation has the dual nature: its exhibits wave properties and photon properties.

Waves are characterized by frequency, wavelength, speed and phase, where as, a photon is the basic unit of all light. Wave particle duality can be explained as when an entity exhibits a wavelike and a particlelike properties though these properties never appear simultaneously.

5 0

4 years ago

Solve for x. 4.6x<−15.64

Ratling [72]

X < -15.64/4.6
Divide both sides by 4.6
Divide 15.64/4.6 to 3.4
x < -3.4.

Answer: x < -3.4

6 0

4 years ago

Describe brefly how you can charge a body

DiKsa [7]

Answer:

charge or change?

Explanation:

I'll write my answer in the comments when you reply

5 0

3 years ago