-
Describe how a hydraulic brake system works
Date posted:
April 4, 2018
-
Explain the applications of pressure in gases and liquids
Date posted:
April 4, 2018
-
The height of the mercury column in a barometer is found to be 67.0 cm at a certain place.
What would be the height of a water barometer at the same place? (densities of mercury-
1.36 × 104
kg/m3
and water- 1.0 × 103
kg/m3
).
Date posted:
April 4, 2018
-
The density of mercury is 13,600 kgm-3
. Determine the liquid pressure at a point 76 cm
below the surface of mercury. (Take g = 10 Nkg-1
)
S
Date posted:
April 4, 2018
-
A diver is 10 m below the surface of water in a dam. If the density of water is 1,000 kgm-3
, determine the pressure due to the water on the diver. (Take g = 10 Nkg-1
)
Date posted:
April 4, 2018
-
A man of mass 84 kg stands upright on a floor. If the area of contact of his shoes and
the floor is 420 cm2
, determine the average pressure he exerts on the floor. (Take g =
10 N/Kg)
Date posted:
April 4, 2018
-
Differentiate between scalar and vector quantity giving examples
Date posted:
April 3, 2018
-
Explain the differences between mass and weight
Date posted:
April 3, 2018
-
An astronaut weighs 900 N on earth. On the moon he weighs 150 N. Calculate the moons’
gravitational strength. (Take g = 10 N/kg)
Date posted:
April 3, 2018
-
What is induction?
What is earthing?
Date posted:
April 3, 2018
-
100 cm3
of fresh water of density 1,000 kgm-3
is mixed with 100 cm3
of sea water of density
1030 kgm-3
. Calculate the density of the mixture
Date posted:
April 3, 2018
-
The mass of an empty density bottle is 20 g. Its mass when filled with water is 40.0 g and
50.0 g when filled with liquid X. Calculate the density of liquid X if the density of water is
1,000 kgm-3
.
Date posted:
April 3, 2018
-
The relative density of some type of wood is 0.8. Find the density of the wood in kg/m3
Date posted:
April 3, 2018
-
The density of concentrated sulphuric acid is 1.8 g/cm3
. Calculate the volume of 3.1
kg of the acid.
Date posted:
April 3, 2018
-
A block of glass of mass 187.5 g is 5.0 cm long, 2.0 cm thick and 7.5 cm high.
Calculate the density of the glass in kgm-3
.
Date posted:
April 3, 2018
-
State the basic safety laboratory rules
Date posted:
April 3, 2018
-
Example
100 cm3
of fresh water of density 1,000 kgm-3
is mixed with 100 cm3
of sea water of density
1030 kgm-3
. Calculate the density of the mixture.
Date posted:
April 3, 2018
-
Explain why lightning is seen when there is thunderstorm.
Date posted:
April 2, 2018
-
What is mass number?
Date posted:
April 1, 2018
-
Differentiate between temperature and heat.
Date posted:
March 27, 2018
-
A polar bear appears to be upside down in the sky. Explain
Date posted:
March 26, 2018
-
A vibrator generates 120 waves in 5 seconds.The distance between successive crests of the waves is 8cm. Determine the time taken by the waves to travel a distance of 150m.
Date posted:
March 25, 2018
-
What is mechanical physics?
Date posted:
March 23, 2018
-
A machine has an efficiency of 80%.if the machine is required to overcome a load of 60N with a force of 40N. Calculate the velocity ratio?
Date posted:
March 22, 2018
-
Distinguish between momentum and impulse.
Date posted:
March 21, 2018
-
State two forms of mechanical energy
Date posted:
March 20, 2018
-
A wave travels at 200m/s through a certain medium. If 40 waves pass a certain point per minute, find their wavelength.
Date posted:
March 18, 2018
-
State TWO reasons why the earth pin in a three pin plug is longer than the others
Date posted:
March 14, 2018
-
List operating characteristics of hand- held sediment samplers.
Date posted:
March 7, 2018
-
Describe on how to measure the volume of oil drop.
Date posted:
March 6, 2018