Oracle Tutoring, Campbell River, BC
(250) 203-6544 (text) or (250) 830-0295 (talk)
Self-tutoring about radiation: the tutor mentions UV in terms of ionizing. I mention ionizing vs non-ionizing radiation back in my post from Nov 10. The basic concept is that ionizing radiation can damage molecules in the body without your feeling …
Self-tutoring about radiation: the tutor mentions ionizing and non-ionizing. Non-ionizing radiation isn’t powerful enough to dislodge electrons from a molecule or atom. It’s the safer of the two kinds of radiation to be around. Even heat is non-ionizing radiation. Ionizing …
Self-tutoring about radioactive decay: the tutor wonders what happens to emitted alpha particles. An alpha particle – sometimes written α – can be emitted in various radioactive decay scenarios. U238 → Th234 + α is an example. α particles aren’t …
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Self-tutoring about physics: the tutor looks at x-ray generation. One type of x-ray generator is a vacuum tube containing a heated plate at one end, and the receiving plate at the opposite end. Around the outside of the tube, the …
Tutoring physics, approximations often help. The tutor mentions a comparison between exact and approximate. Example 1: Imagine a projectile launched according to the equationh=-4.9t^2 +22t + 15 What would be its height at 3.0 seconds? Solution: h=-4.9(3.0)^2+22(3.0)+15=36.9m or 37m (sig …
Tutoring physics or general science, the term parallax might arise. The tutor gives a definition. parallax: the phenomenon that the position of an object seems to change as the viewer’s location changes. Source: Gilmour, Lorna (ed). Collins Essential Canadian English …
Tutoring physics or chemistry, definitions are always important. The tutor compares closed system with isolated system. A closed system cannot lose or gain matter; it cannot exchange matter with the surrounding environment. An isolated system is closed as above, but …
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Tutoring physics, relativity may arise. The tutor mentions its application to mass. Einstein postulated, in his Special Theory of Relativity, that effective mass increases as velocity does, according to m=mo(1-v2/c2)-0.5 where mo is the rest mass, while c is the …
Tutoring high school science, you may be asked about the albedo effect. The tutor explains it simply. Albedo means loss of incoming radiation due to reflection. Light and heat are examples of radiation (see my previous post). Regarding Earth’s climate, …
Tutoring science, the concept of radiation arises. The tutor explains it. Radiation is electromagnetic energy travelling from its source. Imagine a radio receiver which you can tune to any frequency. Actual radio station signals will be at the low end, …