In a potentiometer circuit a 1m long potentiometer PQ of resistance 10ohms is connected in series with a cell of e. m.f 9v with internal resistance 3 ohms calculate the p. d across PQ

Apassenger walks toward the rear of a moving train. describe her motion as seen from a reference point on the train. then describe it from a reference point on the ground

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?