Biophysics Lec 5

“the branch of science that deals with energy levels and the transfer of energy between systems and between different states of matter”

Enumerate objectives of thermodynamics

The ability to do work

• Energy
• Heat
• Thermodynamics
• Biomechanics

Enumerate basic types of energy

In thermodynamics, heat always flows

• From lower to higher energy
• Randomly
• From higher to lower energy
• None of the above

What is the formula for work in terms of pressure and volume?

• W=ΔU+Q
• W=−∫PdV
• W=F×d
• 𝑊 = 𝑚 × 𝑔

If object A is in thermal equilibrium with object B, and object C is also in thermal equilibrium with object B, then objects A and C will be in thermal equilibrium if brought into thermal contact. This is describe

Which statement about the First Law of Thermodynamics is true?

• Energy is created during heat transfer.
• Energy is conserved in any process
• First law of thermodynamics=Bernoulli’s principle
• B and C

If a system gains 200 J of heat and does 50 J of work, what is the change in internal energy?

• 250 J
• 150 J
• 100 J
• 270 J

Which of the following is an application of thermal expansion?

• Bimetallic strip in thermosets
• Anti-scalding device for water taps
• Expansion joints in bridges
• All of the above