9) Un ciclista arranca con una fuerza de 20 N como resultado de su pedaleo. La fuerza de resistencia con el aire es 5 N. La masa de la bicicleta es de 10 kg, y la del ciclista, 62 kg.
a) ¿Cuál es la fuerza resultante?
b) ¿Cuál es su aceleración?

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change