4 Answered Questions for the topic Radiation

10/23/20

#### What fraction of a beam is absorbed in a layer containing 1 kg/m^2 of gas?

Radiation with frequency ν and zero zenith angle passes through a gas with absorption coefficient kv = 0.01 m2/kg.(a) What fraction of the beam is absorbed in a layer containing 1 kg/m2 of gas?(b)...
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10/04/20

#### Science help? Anything will help.

What is the total amount of energy emitted by an object with a temperature of 134°F? HINT: convert to degrees Kelvin before applying to the formula and round answer to the nearest tenth

#### Why alpha particles inestead of hydrogen or duetereum?

I know atoms undergoing alpha decay emit alpha particles, but I was wondering why specifically helium nuclei? If these atoms wanted to emit the smallest unit of matter (I'm talking about hadrons...
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#### Really need clarification for this.

in a thermal pot, there is a layer of vacuum in the outer wall, an inner pot lid and an outer pot lid.
Please help me to clarify these questions:
1. Does hot food radiate heat? Or does...
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