6. (a) a small styrofoam bead with a mass of 18.2 g and a charge of −0.682 μc is suspended in equilibrium above the center of a large, horizontal sheet of plastic that has a uniform charge density on its surface. find the charge per unit area on the plastic sheet (in μc/m2). (b) what if? what are the magnitude and direction of the acceleration of the piece of styrofoam if its charge is doubled? (enter the magnitude in m/s2.)

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gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.

third one with arrows on top of each other going the same direction