A 12.6 g sample of glass goes from an initial temperature of 20.2°C to a final temperature of 45.3°C. Calculate how much he at was transferred, and state whether heat was gained or lost
based on the sign of your answer.

All motion is caused by force? true or false

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.

Find the midpoint of a segment with endpoints of 4-3i and -2+7i