Which of the following would require more energy to heat it from 10°c to 20°c

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

As the distance from a magnet increases, what happens to the magnet force?

Emergent properties of living systems are defined as properties that .