Help!! I really don't know how to resolve it Two identical small electrified balls are not repelled. After being brought into contact and fixed at a distance of 1.25 times greater, their intersecting force did not change. What was the load, the first ball, if the second had a load equal to 1μC? The answer should be: 4μC; 0.25μC;

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

When an object is heated it contracts. a. true b. false

Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.