Answer:
11.3 g
Explanation:
given,
density of the lead = 11.3 g/cm³
volume = 1 cm³
mass of the lead = ?
we know,

mass = volume x density
mass = 1 x 11.3
mass = 11.3 g
hence, the mass of the lead is equal to 11.3 g
Answer:
F = - 1,598 10⁻³ N
Explanation:
Electic strength is given by Coulomb's law
F = k q₁ q₂ / r²
Where k is the Coulomb constant that is worth 8.99 10⁸ N m²/C², q₁ and q₂ are the charges and r is the distance that separates the electric charges
In this case the charge of the two spheres is the same and of a different sign since when you remove the charge of a sphere that was initially neutral, it is left with that charge removed but of the opposite sign
q₁ = q₂ = 2.50 10¹³ electrons = 2.50 10¹³ 1.6 10⁻¹⁹
q₀ = 4.0 10⁻⁶ C
Let's calculate
F = - 8.99 10⁸ (4.0 10⁻⁶)² / 0.30²
F = - 1,598 10⁻³ N
Answer:
Medulla oblongata is lower part of brain.
Cerebrum and cerebellum are the upper hemispheres of the brain.
Explanation:
Cerebrum is the largest part of the brain and is composed of right and left hemispheres.
Cerebellum is the part of brain that lies inside the cerebellum.
Medulla Oblongata is lowest part of brain stem which is most vital part of the brain.
Thalamus is a small region of the brain located above the brain stem. Its main function is to transmit sensory signals to cerebral cortex.
Brain stem act as relay center connecting the cerebrum and cerebellum to the spinal chord.
Hypothalamus is the mid brain located near the pituitary glands. It is very small region of the brain but it plays an important role in maintaining the body temperature and releasing the hormones.