The structure of the embryo which develops and makes contact with the uterine wall is known as the
umbilical cord
placenta
allantois
amnion
chorion
Correct answer is A
No explanation has been provided for this answer.
Magnetic flux density is defined as the
total number of magnetic lines of force surrounding a magnet
number of magnetic lines of force per unit area normal to the magnetic field
strength of the magnetic field surrounding a current-carrying conductor
magnetic force exerted on a unit magnetic pole
Correct answer is B
No explanation has been provided for this answer.
1.8 x 10-7Ωm
5.5 x 10-7Ωm
1.8 x 10-7Ωm
5.8 x 107Ωm
Correct answer is B
No explanation has been provided for this answer.
Solve the simultaneous equations y = 3x; 4y - 5x =14
-2,-6
2,6
2,-6
-2,6
-1,-3
Correct answer is B
y = 3x ... (i);
4y - 5x =14 ... (ii)
Put 3x for y in (ii).
4(3x) - 5x = 14
12x - 5x = 14
7x = 14 ⟹⟹ x = 2.
y = 3x = 3(2) = 6
(x, y) = (2, 6)
The parts of a bar magnet at which the magnetic effect is strongest are called the
poles
neutral points
magnetic declinations
magnetic meridians
Correct answer is A
No explanation has been provided for this answer.