Electromagnetic waves – these waves do not require a material medium for their transmission. They
include radio waves, radiant heat, light and microwaves, etc.
Mechanical waves – they require material medium for their transmission. They include water waves,
sound waves,
Moraa orina answered the question on April 8, 2018 at 08:07
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State the properties of materials
(Solved)
State the properties of materials
Date posted:
April 8, 2018
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Answers (1)
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State the applications of spherical mirrors
(Solved)
State the applications of spherical mirrors
Date posted:
April 8, 2018
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Answers (1)
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A convex mirror of focal length 9cm produces an image on its axis 6cm from the mirror. Determine the
position of the object.
(Solved)
A convex mirror of focal length 9cm produces an image on its axis 6cm from the mirror. Determine the
position of the object.
Date posted:
April 8, 2018
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Answers (1)
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Determine the position, size and nature of the image of an object 4cm tall placed on the principal axis of a
concave mirror of focal...
(Solved)
Determine the position, size and nature of the image of an object 4cm tall placed on the principal axis of a
concave mirror of focal length 15cm at a distance 30cm from the mirror.
Date posted:
April 8, 2018
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Answers (1)
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The charge stored by a cell A of plate dimensions 0.2m*0.2m is 108000C.
a) What charge is stored in cell B of plate dimensions 0.4m*0.4m?
(Solved)
The charge stored by a cell A of plate dimensions 0.2m*0.2m is 108000C.
a) What charge is stored in cell B of plate dimensions 0.4m*0.4m?
Date posted:
April 7, 2018
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Answers (1)
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What is the capacity of a cell which can supply current of 250 mA for 4 hours?
(Solved)
What is the capacity of a cell which can supply current of 250 mA for 4 hours?
Date posted:
April 7, 2018
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Answers (1)
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Differentiate between conductors and insulators giving examples
(Solved)
Differentiate between conductors and insulators giving examples
Date posted:
April 7, 2018
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Answers (1)
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Charge of 180C flows through a conductor for 3 minutes. Calculate the current flowing through the conductor.
(Solved)
Charge of 180C flows through a conductor for 3 minutes. Calculate the current flowing through the
conductor.
Date posted:
April 7, 2018
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Answers (1)
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If the current in a circuit is 2A, calculate:
a) The charge that crosses a point in the circuit in 0.6s.
b) The number of electrons crossing...
(Solved)
If the current in a circuit is 2A, calculate:
a) The charge that crosses a point in the circuit in 0.6s.
b) The number of electrons crossing the point per second. Take e=1.6*10-19C.
Date posted:
April 7, 2018
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Answers (1)
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State the applications of reflection at plane surfaces
(Solved)
State the applications of reflection at plane surfaces
Date posted:
April 7, 2018
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Answers (1)
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At what angle should two mirrors be inclined to form:a) 17 images?b) 29 images?
(Solved)
At what angle should two mirrors be inclined to form:
a) 17 images?
b) 29 images?
Date posted:
April 7, 2018
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Answers (1)
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State the laws of reflection
(Solved)
State the laws of reflection
Date posted:
April 7, 2018
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Answers (1)
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A lamp of height 6cm stands in front of a pinhole camera at a distance of 24cm. the camera screen is 8cm from the...
(Solved)
A lamp of height 6cm stands in front of a pinhole camera at a distance of 24cm. The camera screen is 8cm
from the pinhole. What is the height of the image of the lamp on the screen?
Date posted:
April 6, 2018
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Answers (1)
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The distance between the pinhole and the screen in a pinhole camera is 20cm. a student uses the camera
to form an image of a...
(Solved)
The distance between the pinhole and the screen in a pinhole camera is 20cm. a student uses the camera
to form an image of a person 4m away. The person’s height is 140cm. what is the height of the image?
Determine the magnification.
Date posted:
April 6, 2018
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Answers (1)
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State the factors affecting thermal conduction in solids
(Solved)
State the factors affecting thermal conduction in solids
Date posted:
April 6, 2018
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Answers (1)
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Explain the anomalous (unusual) expansion of water
(Solved)
Explain the anomalous (unusual) expansion of water.
Date posted:
April 6, 2018
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Answers (1)
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Outline qualities of the liquid to be used in liquid in glass thermometer for the thermometer to be effective
(Solved)
Outline qualities of the liquid to be used in liquid in glass thermometer for the thermometer to be effective.
Date posted:
April 6, 2018
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Answers (1)
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Describe an experiment to demonstrate Brownian motion in air (the smoke cell experiment)
(Solved)
Describe an experiment to demonstrate Brownian motion in air (the smoke cell experiment)
Date posted:
April 6, 2018
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Answers (1)
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Describe an experiment to demonstrate Brownian motion in liquids
(Solved)
Describe an experiment to demonstrate Brownian motion in liquids.
Date posted:
April 6, 2018
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Answers (1)
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Describe an experiment to demonstrate that matter is made up of smaller particles
(Solved)
Describe an experiment to demonstrate that matter is made up of smaller particles
Date posted:
April 6, 2018
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Answers (1)