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• I would start by writing an equation that relates the projectiles horizontal coordinate ("x") to its vertical coordinate ("y"). We know that x = (Vx_initial)(t) and: y = (Vy_initial)(t) - ½gt² From the first equation w…

  in How do you do this physics problem? Comment by rickb June 2021
• > Would this change in emf then mean I'm creating an electric field? Yes. In fact, that's how transformers work. In a transformer, one coil of wire acts as an electromagnet. Its magnetic polarity is switched back and forth many times per se…

  in Do electromagnets create electric fields? Comment by rickb June 2021
• First, make a formula for the ship's position (call it "x") as a function of the remaining length of the chain ("L"). It helps to draw a diagram, then use the pythagorean theorem. x² + (100 fathoms)² = L² Or: x = sqrt(L²−(1…

  in Ships anchor problem? Comment by rickb June 2021
• First, make a formula for the ship's position (call it "x") as a function of the remaining length of the chain ("L"). It helps to draw a diagram, then use the pythagorean theorem. x² + (100 fathoms)² = L² Or: x = sqrt(L²−(1…

  in Ships anchor problem? Comment by rickb May 2021
• > Would this change in emf then mean I'm creating an electric field? Yes. In fact, that's how transformers work. In a transformer, one coil of wire acts as an electromagnet. Its magnetic polarity is switched back and forth many times per se…

  in Do electromagnets create electric fields? Comment by rickb May 2021
• I would start by writing an equation that relates the projectiles horizontal coordinate ("x") to its vertical coordinate ("y"). We know that x = (Vx_initial)(t) and: y = (Vy_initial)(t) - ½gt² From the first equation w…

  in How do you do this physics problem? Comment by rickb May 2021