Answer:
Explanation:
The explanation is given in the attached document.
The net force is the sum of the forces acting on an object ( chair ).
F net = F 1 + F 2
F 1 = 20 N, F 2 = - 12 N
F net = 20 N + ( - 12 N ) = 8 N
The chair will tend to move to the left.
Answer:
r = 0.119 m
Explanation:
distance (d) = 1.6 mm = 0.0016 m
electric field strength (E) = 2.7 x 10^{6} N/C
charge (Q) = -1.07 μC = -1.07 x 10^{-6} C
permitivity of vacuum = 8.8542 x 10^{-12} C^{2}/N
find the radius of the plate required
- lets first find the voltage
voltage (V) = E x d
voltage (V) = 2.7 x 10^{6} x 0.0016 = 4320 V
- lets also find capacitance (C) = Q/V
C = -1.07 x 10^{-6} / 4320 = 2.47 x 10^{-10} F
- the value of capacitance (C) is also = E₀A / d
we can rearrange the equation above to have our area (A) = Cd/ E₀
A =
A = 0.0446 m^{2}
- Area (A) = π x
r =
r =
r = 0.119 m
There are two main points that should be emphasized about the different types of electromagnetic radiation. The sequence from longest wavelength (radio waves) to shortest wavelength (gamma rays) is also a sequence in energy from lowest energy to highest energy
hope this helps you!✌