Physics P5 P6 P7 Flashcards
What is the unit of force in the International System of Units (SI)?
Newton (N)
True or False: Energy can be created and destroyed.
False
Fill in the blank: The formula for calculating kinetic energy is _____ = 1/2 mv^2.
KE
What is the principle that states that pressure exerted on a confined fluid is transmitted undiminished in all directions?
Pascal’s principle
What type of energy is stored in an object due to its position?
Potential energy
Which law states that the total momentum of a closed system remains constant?
Law of conservation of momentum
What is the acceleration due to gravity on Earth?
Approximately 9.81 m/s²
True or False: An object in motion will stay in motion unless acted upon by an external force.
True
What is the formula for calculating work done?
Work = Force x Distance x cos(θ)
Fill in the blank: The unit of power is _____ in the SI system.
Watt (W)
What type of wave requires a medium to travel through?
Mechanical wave
What is the frequency of a wave if its period is 0.5 seconds?
2 Hz
True or False: In a vacuum, all electromagnetic waves travel at the same speed.
True
What is the law that describes the relationship between voltage, current, and resistance?
Ohm’s Law
Fill in the blank: The measure of the average kinetic energy of particles in a substance is called _____ .
Temperature
What is the term for the bending of light as it passes from one medium to another?
Refraction
What is the primary force that causes objects to fall towards the Earth?
Gravity
True or False: The higher the temperature of a substance, the greater its internal energy.
True
What is the formula for calculating the potential energy of an object?
PE = mgh
What is the phenomenon where a wave changes direction as it passes through an opening or around an obstacle?
Diffraction
Fill in the blank: The total energy of a closed system remains constant according to the law of _____ .
Conservation of energy
What is the term for the resistance of an object to changes in its state of motion?
Inertia
True or False: Light can exhibit both wave-like and particle-like properties.
True
What is the term for the energy transferred due to a temperature difference?
Heat
What is the formula for calculating the speed of a wave?
Speed = Frequency x Wavelength
Fill in the blank: The force that opposes the motion of an object is called _____ .
Friction
What is the name of the effect where the frequency of a wave changes due to the motion of the source or observer?
Doppler effect
What is the SI unit of electric charge?
Coulomb (C)
True or False: An electric circuit must be closed for current to flow.
True
What is the formula for calculating the gravitational potential energy of an object?
PE = mgh
Fill in the blank: The energy stored in a compressed spring is an example of _____ energy.
Elastic
What is the unit of frequency in the International System of Units (SI)?
Hertz (Hz)
What is the term for the energy associated with the motion of an object?
Kinetic energy
True or False: The pressure of a gas increases as its volume decreases at constant temperature.
True
What physical quantity is defined as the rate of doing work?
Power
Fill in the blank: The measure of the amount of matter in an object is called _____ .
Mass
What is the term for the path followed by an object in motion?
Trajectory
What is the term for the energy of motion at the microscopic level?
Thermal energy
True or False: Light travels faster in water than in air.
False
What is the principle that states that energy cannot be created or destroyed, only transformed?
Law of conservation of energy
What is the term for the maximum displacement of a wave from its rest position?
Amplitude
Fill in the blank: The force of gravity decreases with increasing distance according to the _____ law.
Inverse square
