Practice core concepts of measurement, motion, force, energy, waves, electricity, magnetism and modern physics.
The unit used to measure the power of a lens is:
Which law relates the force between two electric charges to the distance between them?
What is the term for the distance traveled by an object per unit time?
An object will sink in a fluid if its density is:
The device used to measure electric current in a circuit is called a:
For every action, there is an equal and opposite reaction. This is:
What is absolute zero temperature in degrees Celsius?
What is the term for the angle at which incident light strikes a reflective surface?
Waves that require a medium to travel are called:
Which phenomenon occurs when light bends around the edges of an obstacle or aperture?
The escape velocity from Earth's surface is approximately:
What is the unit of capacitance?
Which phenomenon occurs when two or more waves overlap and combine?
The power of a convex lens is considered:
Which type of radiation has the highest penetrating power?
What is the term for the maximum displacement of a wave from its rest position?
An adiabatic process is one in which:
The commercial unit of electrical energy is the:
Which principle explains why a hydraulic lift can multiply force?