The force of attraction between two oppositely charged pith balls is 5.3 × 10-6 newtons. if the charge on the two objects is 6.7 × 10-9 coulombs, what is the distance between the two charges? (k = 9.0 × 109 newton·meter2/coulombs2) a. 2.76 × 10-1 meters b. 7. 0 × 10-1 meters c. 6.7 × 10-1 meters d. 8.2 × 10-1 meters e. 9.6 × 10-1 meters

3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0

Identify some abiotic characteristics of the tundra biome.

Sound travels slower in colder air that it does in warmer air. make a claim about the effect of air temperature on the speed of sound. support your claim with evidence