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Tutor profile: Drew F.

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Drew F.
Chemical Engineer Graduate
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Questions

Subject: Physics (Heat Transfer)

TutorMe
Question:

How does heat disperse in a metal block compared to a wood block of the same size?

Inactive
Drew F.
Answer:

Heat flux in a material depends several things including: amount of material, material's thermal conductivity, and surface area exposed to a higher temperature. Since both objects are the same size the amount of material and surface area are negligible. Therefore, the thermal conductivity determines which material will disperse heat better. Thermal conductivity is the ability for a material to conduct heat, and is a higher value for metal. The higher value means the metal block conduct heat throughout the block faster than the wood block, and will reach a uniform temperature faster.

Subject: Chemical Engineering

TutorMe
Question:

How does a catalyst work in a reactor?

Inactive
Drew F.
Answer:

A catalyst works by lowering the activation energy of a reaction.

Subject: Physics

TutorMe
Question:

In a vacuum, which object will reach the ground faster if dropped at the same height: a bowling ball or a feather?

Inactive
Drew F.
Answer:

Intuitively, the answer would be the bowling bowl. However, in a vacuum, the absence of air removes all drag forces exerted on the objects. Therefore, the only force exerted on both objects is gravity, and both will hit the ground at the same time.

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