Two students are rolling a ball in the grass. student 1 applies a force of 10n in order to roll the ball to student 2. if the force of friction resisting the ball is 7 n, what is the net force acting on the ball?

Compare and contrast physical changes with chemical changes.

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.

How do you convert celsius to kelvins