Two equal charges are situated on the x axis at 40.0.cm on either side of the origin as shown in the figure below. Location A is on the perpendicular bisector at a distance of 21.0 cm from the origin on the y axis. (Assume that the +x axis is directed to the right and they axis is directed up.) 91 *A 92 (a) If q,-3.50 C and q,- -3.50 C; what is the net electric field due to both charges at location A? Express your answer in vector form -1.64-10%) x Did you consider the symmetry of the situation? What is the net contribution to the field from the x components of the field from each charge? N/C (b) Ifa,-39, (where q,- -3.50 C), what is the net electric field at location A due to both charges? Express your answer in vector form, --468-10%-4.1-10% X If the two charges are unequal, what is the net contribution to the field from each charge in the two perpendicular directions? N/C

= A point charge q₁ 9.1 µC is held fixed at 0.42 μC and a mass origin. A second point charge 2 3.2 x 104 kg is placed on the x-axis, 0.96 m from the origin. The second point charge is released at rest. What is its speed when it is 0.24 m from the origin? =

An electron is to be accelerated in a uniform electric field having a strength of 2.106 (a) What energy in keV is given to the electron if it is accelerated through 0.45 m? AKE = keV m (b) Over what distance (in km) would it have to be accelerated to increase its energy by 45 GeV? d = ✔km Hint: How is potential energy, PE, gained by an electron related to the uniform electric field? How is the potential difference, V, related to the uniform electric field?

The figure shows the distribution of nuclear charges (positive charges) in a KBr molecule. Find the magnitude of the electric field (at 10¹0 N/C) at the center of mass of the molecule, knowing that dBr=9.3.10-11 dk-1.89.10-1⁰ m. e=1,602.10-¹⁹℃) a) 506,76 Br +35e b) 516,76 dBr (k=9.10⁹ c.m. dk Fig.123 c) 526,76 K +19e d) 536,76 m, N•m²/C² e) 546,76 "

What is the Magnitude in N of two charges of +0.90 C and +4.0 C, respectively, if they are separated by a distance of 4.0 m?

Two large aluminum plates are separated by a distance of 2.0 cm and are held at a potential difference of 195 V. An electron enters the region between them at a speed of 3.2 × 105 m/s by passing through a small hole in the negative plate and continues moving toward the positive plate. Assume the electric field between the plates is uniform. 1. What is the electron’s speed, in meters per second, when it is 0.1 cm from the negative plate?  2. What is the electron’s speed, in meters per second, when it is 0.5 cm from the negative plate?  3. What is the electron’s speed, in meters per second, when it is 1.0 cm from the negative plate?  4. What is the electron’s speed, in meters per second, when it is 1.5 cm from the negative plate?  5. What is the electron’s speed immediately before it strikes the positive plate?

A dipole with –Q at the origin (0,0) and the +Q at coordinates x= 4.00 cm, y = 3.00 cm is in an Electric field, E = 4.25 V/m directed to the right, +x .   (Q = 0.400 C) Draw and label a figure.

the electric field of 2 plates is E=σ/2ε0 find V (electric potential) by integrating the electric field

A positive charge of 4.20 μC is fixed in place. From a distance of 4.20 cm a particle of mass 6.20 g and charge +3.00 μC is fired with an initial speed of 62.0 m/s directly toward the fixed charge. How close to the fixed charge does the particle get before it comes to rest and starts traveling away? (in cm)

A stationary block has a charge of +6.0 x 10^-4 C. A 0.80-kg cart with a charge of +4.0 x 10^ -4 C is initially at rest and separated by 4.0 m from the block. Calculate the cart’s speed after it is released and moves along a frictionless surface to a distance of 10.0 m from the block.