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Daniel J.
Aerospace Engineer
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Physics (Newtonian Mechanics)
TutorMe
Question:

I projectile motion, there is a trade off between altitude and range for a given initial velocity. What is the angle at which a thrown projectile will achieve maximum altitude? What will the angle be to achieve maximum range for a given initial velocity? (Neglect aerodynamic effects).

Daniel J.
Answer:

Maximum altitude will always be achieved at 90 degrees from the horizontal. Maximum range will always be achieved at 45 degrees from the horizontal for a given initial velocity and neglecting aerodynamic effects.

Mechanical Engineering
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Question:

What is the name of the most common type of heat exchanger used to cool down internal combustion engines?

Daniel J.
Answer:

Radiator.

Aerospace Engineering
TutorMe
Question:

In the real world, the interaction between a moving fluid and a surface parallel to the direction of the flow generates energy losses due to internal friction of the fluid (viscosity) and the friction with the surface. This interaction causes the fluid to become stagnant nearest to the surface and display an increasing velocity profile perpendicular to it. What is the name of the phenomenon that describes the change in velocity profile of the fluid along the surface and what form do the energy losses after these interactions?

Daniel J.
Answer:

The phenomenon that describes velocity profile changes of a fluid along a surface is called boundary layer, and the energy losses due to friction in this interaction take the form of heat.

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