Question 396:

• JAMB 1986

A rectangular tank contains water to a depth of 2m, if the base is 4m x 3m, calculate the force on the base (Density of water = 10³kgm^-3, g = 10ms^-2)

A. 1.4 x 10²N
B. 24 x 10⁴N
C. 2.0 x 10⁴N
D. 1.7 x 10³N

Question 397:

• JAMB 1986

A 1000kg elevator is descending vertically with an acceleration of 1.0ms^-2, if the acceleration due to gravity is 10ms^-2, the tension in the suspending cable is

A. 1.0N
B. 10.0N
C. 9000.0N
D. 11 000N

Question 398:

• JAMB 1986

The mode of heat transfer which does not require a material medium is

A. Conduction
B. Radiation
C. Convection
D. Propagation

Question 399:

• JAMB 1986

The expansion of solids can be considered a disadvantage in the

A. Balance wheel of a watch
B. Fitting of wheels on rims
C. Fire alarm
D. Thermostat

Question 400:

• JAMB 1986

The specific latent heat of fusion of lead is the amount of heat required to

A. Melt lead at its melting point
B. Heat a unit mass of lead through 1^oC
C. Change the state of a unit mass of lead at its melting point
D. Change the state of a unit mass of lead at its boiling point