Answer:
30 (kg)
Explanation:
therefore the mass of the ball is 2 so 30 (kg)
Answer:
Δ P = 13.24 Pa
Explanation:
Given that
Density of oil ,ρ₁ = 9 x 10² kg/m³
We know that density for mercury ,ρ₂ = 13.6 x 10³ kg/m³
The change in the height of column ,Δh = 1.5 mm
The pressure given as
P = ρ g h
Change in the pressure
Δ P = ρ₁ g Δh
Now by putting the values
Δ P = 9 x 10² x 9.81 x 1.5 x 10⁻³ Pa
Δ P = 13.24 Pa
Therefor the change in the pressure will be 13.24 Pa.
Answer
given,
net charge = +2.00 μC
we know,
1 coulomb charge = 6.28 x 10¹⁸electrons
1 micro coulomb charge = 6.28 x 10¹⁸ x 10⁻⁶ electron
= 6.28 x 10¹² electrons
2.00 μC = 2 x 6.28 x 10¹² electrons
= 1.256 x 10¹³ electrons
since net charge is positive.
The number of protons should be 1.256 x 10¹³ more than electrons.
hence, +2.00 μC have 1.256 x 10¹³ more protons than electrons.
