Learn how to calculate the speed of a mass in a circular pendulum with this clear physics tutorial! Step-by-step explanations make it easy to understand circular motion, energy, and angular velocity.

Master vector derivatives in polar coordinates with this clear physics tutorial! Learn step-by-step how to compute derivatives, understand radial and angular components, and apply them to mechanics ...

The embattled leader of STEP Academy, one of Minnesota’s largest charter schools, agreed to resign, just a few days after he tried shifting the blame for the school’s financial crisis to the nonprofit ...

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Alexandra Twin has 15+ years of experience as an editor and writer, covering financial news for public and private companies. Ariel Courage is an experienced editor, researcher, and former ...

Open a brokerage account to start buying stocks. Choose stocks using a buy-and-hold strategy and diversify your investments. Reinvest regularly and maintain a long-term view to build wealth. A stock ...