Small particulates can be removed from the emissions of a coal-fired power plant by a process known as electrostatic precipitator. the particles are given a small electric force on a spherical particle with a diameter of 1.0 micrometer is 2.0 x 10^-13 N. what is the speed of such a particle as it is drawn toward a plate? (the weight of the particle can be ignored since the electric force is much greater than the weight)

How do you tell if someone actually cares about you? and just say they do?

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.

Which accounts for an increase in the temperature of a gas that is kept a constant volume