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Tutor profile: Lorenzo D.

Inactive
Lorenzo D.
Tutor since 2011 - BEng, MSc, PhD candidate at University College London
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Questions

Subject: Italian

TutorMe
Question:

How would you translate the sentence 'Ciao, il mio nome e' Andrea. Qual e' il tuo nome?'

Inactive
Lorenzo D.
Answer:

The sentence can be translated as 'Hello, my name is Andrew. What is your name?'

Subject: Applied Mathematics

TutorMe
Question:

A ball is dropped from the top of the leaning Tower of Pisa, 56 m high. How long does it take to hit the ground? At what speed is it then travelling?

Inactive
Lorenzo D.
Answer:

Using the formula: s = v*t + (1/2)*a*t, where s = space, v = velocity, t = time, a = acceleration, and the values: s = 56 m, v = 0 m/s, a = 9.8 m/s^2, then t = 3.4 s Using the formula: v^2 = v0^2 + 2*a*s, then v = 33 m/s

Subject: Biomechanical Engineering

TutorMe
Question:

What is the minimum stiffness of a medical device that substitutes the mechanical function of long bones, such as femur and tibia?

Inactive
Lorenzo D.
Answer:

To calculate the stiffness of such medical device, the maximum stress experienced by the device must be considered, using the simplified formula: 'max stress = (force applied * device length at cubic power) / (48 * material elastic modulus * stiffness). Thus, the stiffness of the device can be deducted.

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