Answer:
L = 16 [in]
Explanation:
In order to find the arch we must first find the angle that forms the circular sector, using the following formula:
Now using the following equation we can calculate the arc length
Answer:
B.X: 12 Y: 12 Z: 10
Explanation:
Ions are formed when an atom of an element that lacks stable configuration or octet configuration, looses or gains electrons to attain stability.
Magnesium atom contains 12 electrons, with an electron configuration of 2:8:2. Therefore, it requires to loose two electrons to attain stability, thus forming an ion. During ion formation, the number of protons and neutrons are not affected thus they do not change.
Therefore; Magnesium atom contain 12 electrons, 12 protons and 12 Neutrons. While magnesium atom contains 12 protons, 10 electrons, and 12 neutrons.
Answer:
I prefer to have a bottle filled with hot water
Explanation:
I would prefer to have a bottle filled with hot water instead of an equal mass of nails at the same temperature, since water has higher specific heat than iron (nails). The higher the specific heat of a substance, the more heat it will emit when cooling down and it will take longer to cool. Therefore, water is the best option.
Answer:
the force that attracts a body towards the centre of the earth, or towards any other physical body having mass
Electromagnetic spectrum is the collection of electromagnetic waves arranged from low frequency electromagnetic waves to high frequency electromagnetic waves.
Electromagnetic waves are produced by electric charge that are accelerating. When a magnetic field combines with electric field electromagnetic waves are produced. The electric field and magnetic wave are perpendicular to one another in electromagnetic waves.
Below are the type of electromagnetic waves in electromagnetic spectrum: (from high frequency ---> low frequency)
Gamma rays - it is in the end of the electromagnetic spectrum, with highest frequency but shortest wavelength. Gamma rays are generated by radioactive substances.
X-rays - it is next to Gamma rays with respect to frequency but has longer wavelength. This wavelength can penetrate metal. It was discovered by Wilhelm Conrad Roentgen in 1895.
Ultraviolet - ultraviolet waves or ultraviolet radiation have shorter wavelength compared to visible light. The main source of UV radiation is the sun.
Visible Light- among other electromagnetic waves, this the only electromagnetic wave that is visible to the naked eye. The waves inside the range of visible light are the colors. From red( longest wavelength inside visible light) to violet (shortest wavelength inside visible light).
Infrared - infrared radiation is beyond the red color on the visible length. Bodies on earth radiated infrared radiation.
Hope this helps, good luck.