1. oil or water clinging to a surface of a jar is an example of: a) lubrication b) adhesion c) force d) magnetism 2. friction always results in the loss of energy, force, electrons, or heat in the form of energy, force, heat, or electrons. 3. what do tire treads, rubber mats, automobile brakes, and tennis shoes have in common? a) they reduce friction b) they are lubricants c) they increase friction d) they reduce static electricity

The plum pudding model of the atom states that ?

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?