Answer:
The movement of electrons in the presence of a magnetic field.
Explanation:
cathode-ray tube (CRT) has to do with
a vacuum tube in which an electron beam is deflected by applying electric or magnetic fields, produces a trace on a fluorescent screen. Cathode-ray tubes are uses in the television (TV) display. Other uses include radar displays, oscillography, and visual displays for computer terminals.
Answer:
The force of the radiation on the surface is 3.33 x 10⁻¹⁰ N
Explanation:
Given;
intensity of light, I = 1kw/m² = 1000 W/m²
area of the surface, A = 1 cm² = 1 x 10⁻⁴ m²
Since the light is completely absorbed, the force of the radiation is given by;
F = P/c
where;
c is the speed of light = 3 x 10⁸ m/s
But P = IA
F = IA /c
F = (1000 X 1 X 10⁻⁴) / 3 x 10⁸
F = 3.33 x 10⁻¹⁰ N
Therefore, the force of the radiation on the surface is 3.33 x 10⁻¹⁰ N
It is called <em>refraction</em> and is caused the the clear surface bending the light to make it appear different colors or look like it is bent.
Answer:
(b) Friction increases as the normal force (weight) increases, and also depends on the surface
Explanation:
The coefficient of friction relates the normal force between surfaces to the friction force opposing motion. The coefficient depends on the surface.
The appropriate choice is ...
Friction increases as the normal force (weight) increases, and also depends on the surface
Answer:
it helping
Explanation:
and helping aterials between a capacitors’ plates can change its capacitance