Based on the information in the graph, why is energy released during the fusion of hydrogen (H) into helium (He)?​

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?