- Describe an experiment to show that e.m.f is induced due to the relative motion of the wire or the magnet. (Solved)
Describe an experiment on electromagnetic induction to show that e.m.f is induced due to the relative motion of the wire or the magnet.
Date posted: October 16, 2018.
- Explain unique properties of electromagnetic waves(Solved)
Explain unique properties of electromagnetic waves.
Date posted: October 16, 2018.
- A VHF radio transmitter broadcasts radio waves at a frequency of 30 M Hz. What is their wavelength?(Solved)
A VHF radio transmitter broadcasts radio waves at a frequency of 30 M Hz. What is their wavelength?
Date posted: October 16, 2018.
- What is electromagnetic spectrum?(Solved)
What is electromagnetic spectrum?
Date posted: October 16, 2018.
- A material of density 8.5 gcm-3 is attached to a piece of wood of mass 100g and density 0.2 gcm-3. Calculate the volume of material...(Solved)
A material of density 8.5 gcm-3 is attached to a piece of wood of mass 100g and density 0.2 gcm-3. Calculate the volume of material X which must be attached to the piece of wood so that the two just submerge beneath a liquid of density 1.2 gcm-3.
Date posted: October 16, 2018.
- A balloon made up of a fabric weighing 80 N has a volume of 1.0 × 107 cm. the balloon is filled with hydrogen of...(Solved)
A balloon made up of a fabric weighing 80 N has a volume of 1.0 × 107 cm. the balloon is filled with hydrogen of density 0.9 kgm-3. Calculate the greatest weight in addition to that of the hydrogen and the fabric, which the balloon can carry in air of average density 1.25 kgm-3
Date posted: October 16, 2018.
- A solid of mass 1.0 kg is suspended using a thread and then submerged in water. If the tension on the thread is 5.0 N,...(Solved)
A solid of mass 1.0 kg is suspended using a thread and then submerged in water. If the tension on the thread is 5.0 N, determine the relative density of the solid.
Date posted: October 16, 2018.
- Applications of Archimedes principle and relative density(Solved)
Applications of Archimedes principle and relative density
Date posted: October 16, 2018.
- Describe experiment to determine the relative density of a cork(Solved)
Describe experiment to determine the relative density of a cork
Date posted: October 16, 2018.
- A wooden block of dimensions 3 cm × 3 cm × 4 cm floats vertically in methylated spirit with 4 cm of its length in...(Solved)
A wooden block of dimensions 3 cm × 3 cm × 4 cm floats vertically in methylated spirit with 4 cm of its length in the spirit. Calculate the weight of the block. (Density of methylated spirit = 8.0 × 102 kgm-3)
Date posted: October 16, 2018.
- Describe experiment to demonstrate the law of flotation (Solved)
Describe experiment to demonstrate the law of flotation
Date posted: October 16, 2018.
- A block of metal of volume 60 cm3 weighs 4.80 N in air. Determine its weight when fully submerged in a liquid of density 1,200...(Solved)
A block of metal of volume 60 cm3 weighs 4.80 N in air. Determine its weight when fully submerged in a liquid of density 1,200 kgm-3.
Date posted: October 16, 2018.
- Describe an experiment to demonstrate Archimedes principle(Solved)
Describe an experiment to demonstrate Archimedes principle
Date posted: October 16, 2018.
- Describe the applications of centripetal force(Solved)
Describe the applications of centripetal force.
Date posted: October 16, 2018.
- Derive an expression for centripetal acceleration(Solved)
Derive an expression for centripetal acceleration.
Date posted: October 16, 2018.
- Define the term centripetal force(Solved)
Define the term centripetal force.
Date posted: October 16, 2018.
- A wheel of radius 50 cm is rolled through a quarter turn. Calculate (i) The angle rotated in radians (ii) The distance moved...(Solved)
A wheel of radius 50 cm is rolled through a quarter turn. Calculate (i) The angle rotated in radians (ii) The distance moved by a point on the circumference.
Date posted: October 16, 2018.
- Define radian(Solved)
Define radian.
Date posted: October 16, 2018.
- What is angular motion?(Solved)
What is angular motion?
Date posted: October 16, 2018.
- What is circular motion?(Solved)
What is circular motion?
Date posted: October 16, 2018.
- Find the power of a concave lens of a focal length 25 cm.(Solved)
Find the power of a concave lens of a focal length 25 cm.
Date posted: October 15, 2018.
- Explain the common eye defects and their corrections(Solved)
Explain the common eye defects and their corrections.
Date posted: October 15, 2018.
- Explain the uses of lenses on optical devices(Solved)
Explain the uses of lenses on optical devices
Date posted: October 15, 2018.
- Experiment to determine the focal length of a converging lens using the lens formula(Solved)
Experiment to determine the focal length of a converging lens using the lens formula
Date posted: October 15, 2018.
- The lens of a slide projector focuses on an image of height 1.5m on a screen placed 9.0 m from the projector. If the height...(Solved)
The lens of a slide projector focuses on an image of height 1.5m on a screen placed 9.0 m from the projector. If the height of the picture on the slide was 6.5 cm, determine, (a) Distance from the slide (picture) to the lens (b) Focal length of the lens
Date posted: October 15, 2018.
- The focal length of a converging lens is found to be 10 cm. How far should the lens be placed from an illuminated object to...(Solved)
The focal length of a converging lens is found to be 10 cm. How far should the lens be placed from an illuminated object to obtain an image which is magnified five times on the screen?
Date posted: October 15, 2018.
- An object is placed 12 cm from a converging lens of focal length 18 cm. Find the position of the image(Solved)
An object is placed 12 cm from a converging lens of focal length 18 cm. Find the position of the image
Date posted: October 15, 2018.
- An object 0.05 m high is placed 0.15 m in front of a convex lens of focal length 0.1 m. Find by construction, the position,...(Solved)
An object 0.05 m high is placed 0.15 m in front of a convex lens of focal length 0.1 m. Find by construction, the position, nature and size of the image. What is the magnification?
Date posted: October 15, 2018.
- A horizontal pipe of cross-sectional area 50 cm2 carries water at the rate of 0.20 litres per second. Determine the speed;
a) Of the speed of...(Solved)
A horizontal pipe of cross-sectional area 50 cm2 carries water at the rate of 0.20 litres per second. Determine the speed;
a) Of the speed of water in the pipe.
b) When the tube narrows to 20 cm2 at another point.
Date posted: October 12, 2018.
- Outline the equation of continuity(Solved)
Outline the equation of continuity.
Date posted: October 12, 2018.