Sphere a has a charge of +2 x 10 to the power of -6 coulomb and is brought into contact with a similar sphere, b which has a charge of -4 x 10 to the power of -6 coulomb. after it is separated from sphere b, sphere a will have a charge of
a) +2 x 10 to the -6 power c
b) -1 x 10 to the -6 power c
c) +6 x 10 to the -6 power c
d) -2 x 10 to the -6 power c

* explain as i'm lost, you! : )

During spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 89.0 n/m. if the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length? unitst 3 number-1497 the tolerance is +/-5% open show work click if you would like to show work for this question:

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

More solar radiation is absorbed by earth’s surface than by