Science Week 2023 - Physics

What is Newton's First Law of Motion?

• Force equals mass times acceleration

• Every action has an equal and opposite reaction

• An object in motion stays in motion unless acted upon by an external force

• The rate of change of momentum is directly proportional to the applied force

What is the SI unit of electric current?

• Ohm

• Ampere

• Volt

• Joule

What is the phenomenon where a wave bends as it passes through a different medium?

(a)  

What is the fundamental constant that relates a particle's energy to its frequency in quantum mechanics?

• Planck's constant

• Avogadro's number

• Boltzmann constant

• Speed of light

Which law states that the pressure of a gas is inversely proportional to its volume at a constant temperature?

• Graham's Law

• Charles's Law
• Avogadro's Law
• Boyle's Law

What is the process by which a substance changes directly from a solid to a gas without passing through the liquid phase?

• Evaporation

• Condensation

• Sublimation

• Vaporisation

Which fundamental force is responsible for holding the nucleus of an atom together?

• Strong nuclear force

• Weak nuclear force

• Electromagnetic force

• Gravitational force

What is the formula for calculating kinetic energy?

• KE = Fd

• KE = 1/2 mv^2

• KE = 1/2 mv
• KE = m^2v

What is the unit of power in the International System of Units (SI)?

• Ampere

• Volt

• Watt

• Joule

What is the phenomenon where a wave cancels out or reinforces another wave due to their interaction?

• Refraction
• Diffraction
• Interference
• Reflection