How much energy is stored in a spring with a spring constant of 390 N/m if the spring is compressed a distance of 0.45 m from its free length? Group of answer choices

79 J

34000 J

39 J

180 J

88 J

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Atomic nuclei of almost all elements consist of