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Science Fundamentals
Score: 0/8
⏱ 15:00
Question 1 of 8
Q1
What is the principle of conservation of energy?
πŸ’‘ Energy cannot be created or destroyed.
πŸ“– Explanation: The principle of conservation of energy states that energy can neither be created nor destroyed; it can only be transformed from one form to another.
Q2
What is the formula for kinetic energy?
πŸ’‘ It involves mass and velocity.
πŸ“– Explanation: Kinetic energy (KE) is given by the formula KE = 1/2 mvΒ², where m is mass and v is velocity. This shows how energy depends on mass and the square of velocity.
Q3
What is the unit of force in the International System of Units (SI)?
πŸ’‘ Think about Newton's second law of motion.
πŸ“– Explanation: The unit of force in the SI system is the Newton (N), which is defined as the force required to accelerate a one-kilogram mass by one meter per second squared.
Q4
What is the acceleration due to gravity on Earth?
πŸ’‘ This value is commonly approximated.
πŸ“– Explanation: The acceleration due to gravity on Earth is approximately 9.81 m/sΒ², which affects how objects fall towards the Earth.
Q5
Which law states that for every action, there is an equal and opposite reaction?
πŸ’‘ This law is often associated with Sir Isaac Newton.
πŸ“– Explanation: Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction, which explains how forces act in pairs.
Q6
In which type of wave do particles of the medium move parallel to the direction of wave propagation?
πŸ’‘ Think about sound waves.
πŸ“– Explanation: In longitudinal waves, such as sound waves, the particles of the medium move in the same direction as the wave propagates, creating areas of compression and rarefaction.
Q7
What is the speed of light in a vacuum?
πŸ’‘ This is a fundamental constant in physics.
πŸ“– Explanation: The speed of light in a vacuum is approximately 299,792,458 meters per second (often rounded to 3 x 10^8 m/s), and is a fundamental constant in physics.
Q8
What is the relationship between frequency and wavelength in a wave?
πŸ’‘ Think about the wave equation.
πŸ“– Explanation: The relationship between frequency (f) and wavelength (Ξ») is given by the equation v = fΞ», where v is the speed of the wave. As frequency increases, wavelength decreases, and vice versa.