DELSU Physics 2017/2018 Past Questions

Practice each question, then open it to see the full details.

An 80mm column of a liquid is balanced by 120mm column of water in a Hare's apparatus. Calculate the density of the liquid (dw = 1000kgm^-3).

A.1500kgm^-3
B.666.7kgm^-3
C.150 kgm^-3
D.66.7kgm^-3

A stone of mass M kg is held in meters above the floor for 5 seconds. The work done in joules over this period is ......

A.mh
B.mgh
C.mgh/50
D.0

What is the kinetic energy of a body of mass 200kg moving with a velocity of 10m/s

A.1.0 x 10³J
B.2.0 x 10³J
C.5.0 x 10³J
D.1.0 x 10³

The correct unit of energy density is

A.kgm^-3s^-1
B.kgm^-1s^-2
C.kgm³s^-2
D.kgm^-2^-3

The mechanical advantage (MA) of an inclined plane depends on__

A.its length
B.its height
C.the product of its length and height
D.the ratio of its length to its height

What is the coefficient of static friction between a load of mass 0.75kg and a horizontal surface, if the limiting frictional force is 5N? [g = 10ms^-2]

A.0.066
B.0.15
C.0.66
D.1.5