During which step of the scientific method does a scientist make an educated guess about the outcome of an experiment?
A. Collect data
B. Form a hypothesis
C. Analyze the results
D. Design an experiment

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

What does the law of conservation of mass state?

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.