Answer:
Explanation:
Let the slide be at a distance of u from lens . So the object distance is u.
Image distance v = 13 - u .
Using lens formula
1/v -1/u = 1/f
1/ ( 13 - u) - 1 / u = 1 / 2.33
u - (13 - u )/u(13 -u ) = 1/2.33
2u - 13/ 13u - u² = 1/ 2.33
4.66 u - 30.29 = 13 u -u²
u² - 8.34 u - 30.29 = 0
u = -2.73 cm
So lens will be at a distance of 2.73 cm from the slide.
Answer:
The mass of the asteroids is 0.000334896182184 times the mass of the Earth.
39929.4542466 m
Explanation:
Total mass of the asteroids
= Mass of Earth =
The ratio is
The mass of the asteroids is 0.000334896182184 times the mass of the Earth.
Volume is given by
The diameter is 39929.4542466 m
Answer:
2 Electrons
Explanation:
Both the Hydrogen atom will share electron equally by covalent bonding. so there will be 2 electron in the bonding molecular orbital.
Organisms must maintain a pH level of seven. Seven is known as neutral in the pH scale. It has the same amount of balanced bases and acids. Hope this helps:)
The atomic number Z of an element is the number of protons it contains (and in an atom it is equal to the number of electrons). The mass number M is close to the mass of one mol of the substance but it is defined as the number of protons and neutrons in the nucleus of the atom; there, the main mass of the atom is contained. Hence, N=M-Z=74-36=38(since M counts both protons and neutrons while Z only protons). Thus, it has 38 neutrons.