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The caskets with the bodies of the three deceased employees were covered with lead and a thick layer of concrete in order to reduce the radiation background in the burial area due to an extremely long half-life of the isotope uranium-235.
A fission reaction is a nuclear fusion process aimed at generating energy. To absorb a neutron, a special isotope, uranium-235, is applied.
a. λ=hc/E, where λ=wavelength of X-ray produced, h=planks constant, E=energy (eV) e is electron charge, c=velocity of light.b. (1) shorter wavelength, (2) intensity increases.
Pyroclastic material often appears during (or rather is a result of) a volcanic eruption. It consists of volcanic rock, ash, lava, and gases. These materials come in a cloud or a flow. The flow and the cloud are very hot and cause a lot of damage to people and areas...
The content of silica in magma affects its viscosity. Thus, if the content of silica increases viscosity of magma also becomes higher. This process is associated with the high melting point of this compound.
Tsunami is a large amount of water that moves to the land. An earthquake that occurs in the ocean, as well as a big lake, makes large volumes of water move. A tsunami is often a series of huge waves.
First difference is that P waves are faster than S waves.Secondly, S wave “involves oscillation perpendicular to the direction of propagation,” while P waves are characterized by compressional motion.Thirdly, P waves can travel through liquid, whereas S waves cannot do this.
The Big Bang theory postulates that the Universe later expanded rapidly. The theory is supported by various pieces of evidence: for instance, the expansion, its early hot state, helium, and galaxy formation are derived from various cosmological models, including cosmic microwave background, Hubble diagram (type la supernovae), availability of light...
Stellar Parallax describes the movement of a star against other more distant stars during the revolution of the Earth around the Sun. The concept can be used to determine the distance of a few stars that are close to the Sun. Mathematically, the distance to a star in parsecs will...
The answer is spectroscopy. Explanation: Spectroscopy is concerned with the exploration and analysis the electromagnetic spectrum of light. The electromagnetic spectrum is the term used to describe the variety of frequencies of electromagnetic radiation. Different wavelengths of electromagnetic waves produce various colors. Some of these colors can be seen by...
The correct answer is C. An incandescent light bulb produces a continuous visible spectrum. Explanation: Visible light spectrum is the term used to define the range of wavelength that can be discerned by the human eye. However, the vast share of electromagnetic waves are invisible to humans. Below is the...
Correct answer is B. A real object has a positive object distance. Explanation: The lens equation is an important topic in physics and optics because it allows quantifying the relationship between an object and an image. There are three key concepts involved in a lens equation: object distance, image distance,...