- 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...(Solved)
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...(Solved)
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
,...(Solved)
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(Solved)
Differentiate between scalar and vector quantity giving examples
Date posted: April 3, 2018.
- Explain the differences between mass and weight(Solved)
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)(Solved)
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?(Solved)
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(Solved)
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...(Solved)
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(Solved)
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.(Solved)
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...(Solved)
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(Solved)
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.(Solved)
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(Solved)
Explain why lightning is seen when there is thunderstorm.
Date posted: April 2, 2018.
- What is mass number (Solved)
What is mass number?
Date posted: April 1, 2018.
- Differentiate between temperature and heat(Solved)
Differentiate between temperature and heat.
Date posted: March 27, 2018.
- A polar bear appears to be upside down in the sky. Explain(Solved)
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...(Solved)
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?(Solved)
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?(Solved)
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 (Solved)
Distinguish between momentum and impulse.
Date posted: March 21, 2018.
- State and explain two forms of mechanical energy(Solved)
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.(Solved)
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(Solved)
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(Solved)
List operating characteristics of hand- held sediment samplers.
Date posted: March 7, 2018.
- Describe on how to measure the volume of oil drop(Solved)
Describe on how to measure the volume of oil drop.
Date posted: March 6, 2018.
- Describe an experiment on how to measure the thickness of a razor Blade(Solved)
Describe an experiment on how to measure the thickness of a razor Blade
Date posted: March 6, 2018.
- A butcher has a beam balance and masses 0.5kg and 2kg. How would he measure 1.5kg of meat on the balance at once(Solved)
A butcher has a beam balance and masses 0.5kg and 2kg. How would he measure 1.5kg of meat on the balance at once.
Date posted: March 5, 2018.
- Explain the reason somebody in the highland is likely to suffer from a nosebleed
(Solved)
Explain the reason somebody in the highland is likely to suffer from a nosebleed
Date posted: March 5, 2018.