Get premium membership and access questions with answers, video lessons as well as revision papers.
v = f ${\lambda}$ => then ${\lambda}$ = v / f = 3.0 × 108 / 300 × 106 = 1.00 m.
Mutiso answered the question on October 16, 2018 at 07:37
- What is electromagnetic spectrum?(Solved)
What is electromagnetic spectrum?
Date posted: October 16, 2018. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- Applications of Archimedes principle and relative density(Solved)
Applications of Archimedes principle and relative density
Date posted: October 16, 2018. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- Describe experiment to demonstrate the law of flotation (Solved)
Describe experiment to demonstrate the law of flotation
Date posted: October 16, 2018. Answers (1)
- 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. Answers (1)
- Describe an experiment to demonstrate Archimedes principle(Solved)
Describe an experiment to demonstrate Archimedes principle
Date posted: October 16, 2018. Answers (1)
- Describe the applications of centripetal force(Solved)
Describe the applications of centripetal force.
Date posted: October 16, 2018. Answers (1)
- Derive an expression for centripetal acceleration(Solved)
Derive an expression for centripetal acceleration.
Date posted: October 16, 2018. Answers (1)
- Define the term centripetal force(Solved)
Define the term centripetal force.
Date posted: October 16, 2018. Answers (1)
- 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. Answers (1)
- Define radian(Solved)
Define radian.
Date posted: October 16, 2018. Answers (1)
- What is angular motion?(Solved)
What is angular motion?
Date posted: October 16, 2018. Answers (1)
- What is circular motion?(Solved)
What is circular motion?
Date posted: October 16, 2018. Answers (1)
- 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. Answers (1)
- Explain the common eye defects and their corrections(Solved)
Explain the common eye defects and their corrections.
Date posted: October 15, 2018. Answers (1)
- Explain the uses of lenses on optical devices(Solved)
Explain the uses of lenses on optical devices
Date posted: October 15, 2018. Answers (1)