Three particles are placed in the xy plane. A 40-g particle is located at (3. 4) m, and a 50-g particle is positioned at (-2. -6) m. Where must a 20-g particle be placed so that the center of mass of this three-particle system is located at the origin? ​

Who was the first scientist to measure speed as distance over time?

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.