Guys please help, all the explaining was in spanish because im in spain at a spanish school so yeah, i understand nothing.
1. A swimmer is timed during a competition and the following were obtained (see table). Draw a s-t graph and work out her average speed.
distance (m): 0 2,1 4,2 6,3 8,4 10,5 12,6
time (s): 0 1 2 3 4 5 6
its supposed to be in a table but, ya know

Amachinist needs to remove a tight fitting pin of material a from a hole in a block made of material b. the machinist heats both the pin and the block to the same high temperature and removes the pin easily. what statement relates the coefficient of thermal expansion of material a to that of material b? a) the situation is not possible, heating block b will shrink the hole in the material as the material expands with increasing temperatureb) material b has the same coefficient of expansion as does material ac) material b has a negative coefficient of expansion and a has a positive coefficient of expansiond) material a has a greater coefficient of expansion than does material be) material b has a greate

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?

Which statement best explains why the overall charge on an atom is zero?