Adigun

A body at equilibrium is under the action of three forces. One force is 10N acting due east and one is 5N in the direction 60 degree north-east. What is the magnitude and direction of the third force?

A body of mass 25kg, moving at 3m/s on a rough horizontal floor is brought to after sliding through a distance of 2.5m on the floor. Calculate the coefficient of sliding friction.

An object is 6m away from the base of a mast. The angle of depression of the object from the top of the mast is 50 degree. Find, correct to 2 decimal places, the height of the mast.

6g of metal M react completely with 23.66g of chlorine to form 29.66g of the metallic chloride. Find the empirical formula of the metallic chloride. (M = 27, Cl = 35.5)

Find the sum of the first 8th of the series 1/2+1/3+2/9+...

The sum of the first nth term of a geometric progression is 127 and the sum of their reciprocal is 127/64. The first term is 1. Find n and the common ratio.

How many grams of NaCl are contained in 500ml of normal saline solution which is 0.85%(w/v).

If an element N has isotopic abundances X% of mass number 12, atomic number 6, and Y% of N of mass number 13, atomic number 6. If their relative isotopic mass is 12.35. Find X and Y.

How much heat is evolved when 500kg of Ammonia is evolved according to the following equation: N2(g)+3H2(g)<->2NH3(g) [deltaH =-91.8K]