Answer:
Explanation:
r = Radius of atom =
m = Mass of chlorine atom =
= Angular speed =
The moment of inertia of the system is given by
Kinetic energy is given by
The rotational kinetic energy of one molecule of the atom is
Answer:
16 times
Explanation:
The international space station orbits the earth every 90 minutes. That means the international space station will orbit the earth 16 times within a 24 hour period.
Answer:
Both A and B
Explanation:
Slow cranking and excessive current draw are common problems that arise whenever a mechanical fault is within a system and also when motor starter is ineffective or binding. Therefore, both technicians are correct
Answer:
Explanation:
The center of gravity will act at the middle point that is at 4.38 m from the end of the plank that is on boat . 16.35 x 9.8 N will act at this point .
The plank will turn around a point at 3.17 m from the end of plank that is on boat .
Suppose the weight required be W . It will be placed at the end of the plank that is on boat . The position of man is on the extreme end of the plank that is over water . So its distance from turning point will be 8.76 - 3.17 = 5.59 m .
Taking torque about turning point of all the forces like , weight of plank , weight of the person walking and force due to W
W x 3.17 = 16.35 x ( 4.38 - 3.17 ) + 60.3 x ( 8.76 - 3.17 )
W x 3.17 = 19.78 + 337.07 = 356.85
W = 112.57 kg .
Answer:
λ = 864 nm
Explanation:
To find the wavelength of the light you use the following formula, which determines the position of the m-th fringe in an interference pattern:
(1)
ym: position of a bright fringe
D: distance from the slits to the screen = 3,7 m
d: distance between slits = 0,2mm = 0,2 *10^-3 m
m: order of the fringe
λ: wavelength of the light
You have the distance from the central peak to the third fringe (0,048m). Then, you can use the equation (1) with m=3 and solve for the wavelength:
henc, the wavelength of the light is 864nm