In a convection current___. warm fluid sinks to replace cool fluid

warm fluid is more dense, and therefore, rises

heat flows from cooler areas to warmer areas

cool fluid is more dense, and therefore, sinks

3. a particle with initial velocity v⃗ 0=(5.85×103m/s)j^ enters a region of uniform electric and magnetic fields. the magnetic field in the region is b⃗ =−(1.35t)k^. you can ignore the weight of the particle. a. calculate the magnitude of the electric field in the region if the particle is to pass through undeflected, for a particle of charge +0.640 nc.