se desea preparar 500 g de una soluccion de nitrato de potasio al 15% m/m. indicae detalladamente los pasos a seguir.

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

there are no contact forces mentioned on the list of choices that you've provided.

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft