18.5.2 ऊर्जा के वैकल्पिक स्त्रोत ,का चित्र

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Identify the electromagnets with poles that are reversed from the electromagnet shown above

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both