Which one best describes scientific knowledge? (A) clear question asked by scientists
(B) what we know about the world
(C) how scientists get answers to their questions
(D) measurements made with our senses

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?

You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching each other. when you increase the plate separation, what happens to the following quantities?

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.