الفيزياء العامة الجزء الثاني#موقع الفيزياء.كوم

Lectures in General Physics
y
3 nC
0.250 m
4 nC
x
0.175 m
-2 nC
Figure 5
(a) Find the vector electric field that the 4.00 nC and -2.00 nC charges
together create at the origin. (b) Find the vector force on the 3.00 nC charge.
a. (a) (0.144i - 0.103 j) kN/C; (b) (0.432i - 0.308j) N
b. (a) (-0.575i - 0.587j ) kN/C; (b) (-1.73i- 1.76j) N
c. (a) (-0.144i - 0.103j) kN/C; (b) (-0.432i - 0.308j) N
d. (a) (-0.575i + 0.587j) kN/C; (b) (-1.73i + 1.76j) N
[10] Two 1.00 C point charges are located on the x axis. One is at x = 0.60
m, and the other is at x = -0.60 m. (a) Determine the electric field on the y
axis at x = 0.90 m. (b) Calculate the electric force on a -5.00 C charge
placed on the y axis at y = 0.90 m.
a. (a) (8.52 10 3 i +1.28 l0 4 j)N/C; (b) (-4.62 l0 -2 i – 6.39 10 -2 j)N
b. (a) 8.52 10 3 j N/C; (b) -4.26 10 -2 j N
c. (a) 1.28 10 4 j N/C; (b) -6.39 10 -2 j N
d. (a) -7.68 10 3 N/C; (b) 3.84 10 -2 j N
[11] A 14.0C charge located at the origin of a cartesian coordinate system
is surrounded by a nonconducting hollow sphere of radius 6.00 cm. A drill
with a radius of 0.800 mm is aligned along the z-axis, and a hole is drilled
in the sphere. Calculate the electric flux through the hole.
a. 176 Nm 2 /C
b.4.22 Nm 2 /C
c. 0 Nm 2 /C
d. 70.3 Nm 2 /C
[12] An electric field of intensity 2.50 kN/C is applied along the x-axis.
Calculate the electric flux through a rectangular plane 0.450 m wide and
Dr. Hazem Falah Sakeek 113