2 A writing desk stands on a base of external dimensions 80 cm x 70 cm and internal
dimensions 70cm x 50 cm (see diagram). The
total weight of the desk and base is 400N.
Calculate the average pressure the desk
exerts on a horizontal floor, (i) in Ncm, and
(i) in Pa.

Aperson touches a large chunk of ice with their hand and remarks, “this is making me cold.” explain what this person is feeling. is the ice transferring “cold” to the person? is there a heat transfer occurring? explain.

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.

7.study the scenario. a small container of water with a low temperature is poured into a large container of water with a higher temperature. which choice correctly explains what happens to the thermal energy of these systems? the smaller container of water has more heat and thermal energy than the larger container. some heat and thermal energy is transferred to the larger container of water. the larger container of water has more heat and thermal energy than the smaller container. some heat and thermal energy is transferred to the smaller container of water. the larger container of water has more thermal energy and some of that energy is transferred to the colder water in a process known as heating. the smaller container of water has more thermal energy than the larger container, and some of that energy is transferred to the warmer water in a process known as heating.