Why did Albert Einstein decide to discover gravity? How many years did it took for him to develop calculus?

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Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical