General Physics Flashcards
Who proposed the heliocentric model of the solar system, where the planets orbit the Sun?
A. Ptolemy
B. Galileo Galilei
C. Nicolaus Copernicus
D. Johannes Kepler
C.
What is the first law of thermodynamics also known as?
A. Law of inertia
B. Law of conservation of energy
C. Law of thermal expansion
D. Law of heat exchange
B.
What principle states that it is impossible to simultaneously know both the position and momentum of a particle with absolute certainty?
A. Pauli Exclusion Principle
B. Heisenberg Uncertain Principle
C. Schrödinger Equation
D. Bohr’s Model
B.
Roselle travels from V. Mapa to Pureza by bicycle to attend her class in PUP. However, she noticed that her bike tire is flat.
As she pumps up the bike tire, she observes that as she pumps with vigor, the pump itself appears to be warm. Why does it happen?
A. Because of the friction of the pump.
B. The work being done in compressing heats the air.
C. Many air molecules collide because of increased pressure.
D. None of the above.
B.
Arthur has two containers. He filled the first one with feathers, while the other one with sand. Then, Arthur submerged the both of them in water. In which container has a greater buoyant force?
A. Container filled with feathers.
B. Container filled with sand.
C. Both have the same buoyant force.
D. Cannot be determined.
Given the scenarios below, which of the following scenarios is possible?
I. An object moves with constant velocity and constant acceleration.
II. An object with constant velocity and changing acceleration.
III. An object moves with changing velocity and constant acceleration.
IV. An object moves with changing velocity and changing acceleration.
A. I only
B. IV only
C. III and IV
D. I, III, and IV
C.
Entropy is a measurement indicating the level of disorder within a system. It also signifies the amount of energy within the system that is unavailable for performing work.
As the disorder within a system increases, so does its entropy, consequently reducing the portion of the system’s energy that can be utilized for work. The equation for the change in entropy, ∆S, is ∆S=Q/T. What is the SI unit for entropy?
A. Joules (J)
B. Calories per degree Celsius (cal/°C)
C. Joules per Kelvin (J/K)
D. Joules per mole-kelvin (J/mol-K)
C.
