WAVES + THERMODYNAMICS
Retorin
YEAR 11 PHYSICS
EXAM - 1
SHORT ANSWERS
16.
** Copper has a specific heat capacity of 0.39kJ kg 2 °c and water has a specific heat capacity of 4.2 kJ kg 2 °c. What will
be the final temperature of the contents in an insulated container if 250g of copper at 90°C is placed into 400mL of wa-
ter at 15°C

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

In 1995 a research group led by eric cornell and carl wiemann at the university of colorado successfully cooled rubidium atoms to the 20-200 nk temperature range. assuming (incorrectly) that the rubidium atoms behave liké particles of a classical ideal gas, calculate the rms speed of a rubidium atom at a temperature of 112.0 nk. in the experiments one particular isotope of rubidium was used, rubidium-87. the molar mass of this isotope is 86.91 q/mol. tries 0/20 submit answer

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?