Grade Master

IB Economics Unit 1 Quiz #1-Questions and Answers Graded A+ Economics is the study of - ANSWER-choices Economics is the science of - ANSWER-scarcity Scarcity - ANSWER-we have unlimited wants but limited resources Economics is a social science concerned with: - ANSWER-the efficient use of scarce resources to achieve the maximum satisfaction of economic wants Microeconomics vs. Macroeconomics - ANSWER-Micro- Study of econ on a smaller scale (personal(specific) / local) Macro- Study o...

Thermodynamics Final Exam multiple choice-Questions and Answers Graded A+

Nanotechnology Final Exam-Questions and Answers Graded A+

Nanotechnology Final Exam-Questions and Answers Graded A+ One application of increased surface area to volume ratio for nanomaterials is - ANSWER-increasing the efficiency of catalysts An example of an important function of living organisms that takes place at the nanoscale is - ANSWER-DNA replication The "bottom-up" approach of nanotech involves - ANSWER-assembling atoms and molecules individually into structures These particles are used in electrical circuits and microscopy - ANSWE...

Introduction to Nanotechnology-Questions and Answers Graded A+ what is nanoscience? - ANSWER-study of objects and phenomena that occur at the nanoscale (1-100 nm) Properties of matter change as size changes from macroscale to nanoscale. Four aspects that this is due to: - ANSWER--dominance of electromagnetic forces -quantum effects -increase in surface area to volume ratio -influence of random molecular motion Three differences between quantum mechanics and classical mechanics: - ANSWE...

Heat Transfer Exam 1-Questions and Answers Graded A+

Linguistics Chapter 5 – Syntax-Questions and Answers Graded A+

Thermodynamics [FINAL EXAM]-Questions and Answers Graded A+ Kinetic Energy and Potential Energy are extensive properties of a system. - ANSWER-True Work is not a property - ANSWER-True It is correct to say that a system contains heat. - ANSWER-False. Heat is a mode of energy transfer and can only be recognized at a system boundary. It is not a property of a system. The change in total energy of a closed system other than changes in kinetic and gravitational potential energy are account...

Thermodynamics Final Exam multiple choice-Questions and Answers Graded A+ If the ideal gas law is applicable, we know enthalpy and internal energy are a function of which thermodynamic property? - ANSWER-temperature An open system allows__________to cross the boundary, while a closed system allows_________to cross the boundary. - ANSWER-mass & energy; energy What is the thermal efficiency a heat engine with the following values: Qin=100 Btu, Qout=60 Btu? - ANSWER-n=Wcycle/Qin Wcycle=Qin-Q...

Heat Transfer Exam 1-Questions and Answers Graded A+ When there is a constant heat generation qdot in a slab or plane wall with thermal conductivity k, what statement is CORRECT? Assume one-directional (x-direction) steady-state conduction. A. temperature T is linear. B. d^2T/dx^2=-qdot/k C. dT/dx=const D.heat transfer rate across the wall q is a constant. - ANSWER-B. d^2T/dx^2=-qdot/k Cont... if the boundary conditions at the two sides of the wall are the same, where would be the maximu...