A) What type of friction acts on a car slowing down on the road? Neglect air resistance. * static

sliding

rolling

fluid

b) What two types of force act on a skydiver with its parachute open? *

sliding friction and applied force

rolling friction and air resistance

gravity and air resistance

c) What two forces are acting on a book at rest on a table? *

gravity and sliding friction

push force and sliding friction

gravity and normal force

How much energy moves onto the next level, in an energy pyramid

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)