Which option correctly defines the scientific method?

a specific way of pursuing a scientific question that involves constructing a theory and then showing it is a law through experimentation
a specific way of pursuing a scientific question that involves constructing a theory and then showing it is correct through experimentation
a specific way of pursuing a scientific question that involves the systematic formulation, observation, testing, and modification of a hypothesis
a specific way of pursuing a scientific question that involves performing an experiment and then constructing a hypothesis

Which type of electromagnetic waves are dangerous enough to be used to kill cancerous cells? (a)gamma rays (b)visible light (c)infrared light (d)microwaves

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.

The heliocentric and the geocentric models of the solar system included these central principles