Science and Physics Flashcard

Front

What is the principle of conservation of momentum?

Back

The principle states that the total momentum of a closed system remains constant if no external forces act on it.

Front

What is a vaccine?

Back

A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease.

Front

What type of radiation has the highest penetrating capacity?

Back

Gamma rays have the highest penetrating capacity among alpha particles, beta particles, X-rays, and gamma rays.

Front

How do you calculate total current in a parallel circuit?

Back

Total current (I_total) is the sum of the currents through each parallel branch. I_total = I1 + I2 + ... + In.

Front

What happens when an electron transitions from a higher to a lower energy level in an atom?

Back

A photon is emitted when an electron transitions from a higher to a lower energy level.

Front

What is the formula for calculating the total resistance in a parallel circuit?

Back

1/R_total = 1/R1 + 1/R2 + ... + 1/Rn.

Front

What is the definition of kinetic energy?

Back

Kinetic energy is the energy that an object possesses due to its motion, calculated as KE = 1/2 mv².

Front

What is the role of the Food and Drug Administration (FDA) in vaccine approval?

Back

The FDA is responsible for ensuring the safety and efficacy of vaccines before they can be administered to the public.

Front

What is the difference between alpha, beta, and gamma radiation?

Back

Alpha particles are heavy and positively charged, beta particles are lighter and negatively charged, and gamma rays are high-energy electromagnetic radiation.

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points, expressed as V = IR.