Top answers

Explain the difference between stewardship and dominion (6 marks)

Stewardship refers to a view held by some Christians that, as the name implies, they have to act as 'stewards' over the animals. This means that they have a God-given duty to protect the animals from harm an...
CC
23581 Views

Explain, in terms of frequencies, why solutions of transition metal ions are often coloured.

Transition metal ions have partially filled d sub-shells. These shells split into two levels and the electrons in the lower levels can be excited to the higher ones by absorbing an amount of energy equivalen...
HD
Answered by Harry D. • Chemistry tutor
3531 Views

There is a point between the Moon and the Earth where the gravitational attractions are equal and opposite. How much further is this point from the Earth than the Moon

Using the formula for gravitational attraction between the Moon/Earth and a test mass, m. We determine F E = (G*M E m)/(r E 2 ), F M = (G M M *m )/ (r M 2 ). Setting these two forces equal to each other and ...
PD
Answered by Paul D. • Physics tutor
7682 Views

f(x) = 6x³ + 13x² - 4. Use the factor theorem to show that (x+2) is a factor of f(x)

If x+2 is a factor implies x=-2 is a solution Sub in x=-2 : f(-2) = 6*(-2)³ + 13*(-2)² -4 = 6*-8 +13*4 - 4 = 0 f(-2) = 0 therefore x+2 is a solution
BS
Answered by Benjamin S. • Maths tutor
5764 Views

Fidn the solutions to the quadratic equation: x^2 - 16 = 0

Solve by adding 16 to both sides of the equation yielding: x^2 = 16. Then take the square root of both sides (remembering that taking the square root gives us a positive and a negative answer), giving us x =...
PD
Answered by Paul D. • Maths tutor
12530 Views