A1.6 g plastic bead charged to -3.2 nc and a 3.6 g glass bead charged to 17.0 nc are 2.1 cm apart (center to center). (part a) : what are the magnitudes of the accelerations of the plastic bead and the glass bead?
express your answers using two significant figures. enter your answers numerically separated by a comma. (part b) : what are the directions of the accelerations of the plastic bead and the glass bead?
a) the beads accelerate away from each other. b) the beads accelerate toward each other.
c) the beads accelerate in the same direction.

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

What is the magnitude of the resultant vector round your answer to the nearest tenth

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.