Answer:
E = 53.3 N/C
Explanation:
The charge of the sphere can be found by Gauss’ Law:
We will draw an imaginary spherical surface around the original sphere with radius 0.2 cm. The integral in the left-hand side is the area of this surface, therefore no need to take the integral. The right-hand side is equal to the total charge enclosed by this imaginary surface.
Now that we have found the charge of the sphere, we can now apply Gauss’ Law again to find the E-field 0.006 m from the center.
We will draw our second imaginary spherical surface with a radius 0.006 m.
Average velocity is defined as
now we have
when she cross the pool in time t1
when she cross the pool back to starting position
Here negative sign is for its return path direction which is reversed of its initial direction.
now for the round trip
displacement = 0
so v = 0
The visible light has wavelength in therange 400 - 700 nano-meters. The wavelengths longer than visible light are: 1-Infrared waves (used in ringtone/mobile waves)2-microwaves -used to heat and cook food. 3- Radiowaves - used in communication
Answer:
B. 3.24 m/s²
Explanation:
We can only answer if we make some assumptions.
ASSUMING
1) The box is on a horizontal surface
2) The surface is frictionless (This will give the MAXIMUM acceleration possible)
F = ma
100cos30 = 25a
a = 100cos36 / 25 = 3.23606797...
a ≈ 3.24 m/s