A)a tiny ball suspended at the end of a string has a charge q and is situated in a horizontal uniform electric field of magnitude 700 n ca-1 which points in the positive x-direction (horizontally). when the ball is in equilibrium, the string makes an angle of 20 o to the y-direction (vertically), such that it is displaced away from the vertical in the negative x-direction. the tension in the string has a magnitude of 6.3 x 10^-3 n. calculate the charge on the ball b)two electrons each with a momeentum of magnitude about 10a-23 kg m sa-1 are traveling along the x-axis, approximately 1 nm apart. they pass a measurement device which determines their momentum. to what precision can the momentum be determined without losing the ability to clearly recognize that two distinct particles have passed? (observations of two distinct particles requires that the wave functions representing the two electrons do not overlap appreciably)

Asuppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer.

2. -/1 pointsserpse10 2.7.p.017.mi. an object moving with uniform acceleration has a velocity of 14.0 cm/s in the positive x direction when its x coordinate is 2.97 cm. if its x coordinate 2.85 s later is -5.00 cm, what is its acceleration? cm/s2 need ? read it master it

An isolated conducting spherical shell carries a positive charge. part a which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? electric potential inside the shell is constant and outside the shell is changing as 1/r2 both the electric potential and the electric field does change with r inside and outside the spherical shell electric potential inside and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is equal to zero electric field inside and outside the shell is constant (does not change with the position r), but is not equal to zero electric field inside and outside the shell is changing as 1/r (where r is the distance from the center of the sphere) electric field inside is equal to zero and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is changing as 1/r electric field inside and outside the shell is changing as 1/r2 electric field inside is equal to zero and outside the shell is changing as 1/r2 electric field inside and outside the shell is zero electric field inside is constant and outside the shell is changing as 1/r