1. X-rays penetrate matter while cathode rays do not.
2. Cathode rays are negatively charged streams of electrons while X-rays are uncharged electromagnetic radiation.
chrispohmomanyi answered the question on October 1, 2017 at 07:18
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State a substance whose relative density is 1.
(Solved)
State a substance whose relative density is 1.
Date posted:
October 1, 2017
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Answers (1)
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Define relative density.
(Solved)
Define relative density.
Date posted:
October 1, 2017
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Answers (1)
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State any difference between dry cells and an accumulator.
(Solved)
State any difference between dry cells and an accumulator.
Date posted:
October 1, 2017
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Answers (1)
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An automobile electrician notices that by replacing a wire, it becomes hot and its insulation burns off. Explain the most probable mistake she made.
(Solved)
An automobile electrician notices that by replacing a wire, it becomes hot and its insulation burns off. Explain the most probable mistake she made.
Date posted:
October 1, 2017
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Answers (1)
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A student is provided with a bar magnet and a string. Explain the easiest way of identifying the poles.
(Solved)
A student is provided with a bar magnet and a string. Explain the easiest way of identifying the poles.
Date posted:
October 1, 2017
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Answers (1)
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A man fixed a large concave mirror of focal length 2 m, 160 cm from his face. State three characteristics of his image in the mirror.
(Solved)
A man fixed a large concave mirror of focal length 2 m, 160 cm from his face. State three characteristics of his image in the mirror.
Date posted:
October 1, 2017
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Answers (1)
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Hammering of a magnet demagnetizes a magnet. Explain how this takes place.
(Solved)
Hammering of a magnet demagnetizes a magnet. Explain how this takes place.
Date posted:
October 1, 2017
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Answers (1)
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A charged electroscope is used in electrostatics study. State two of its uses.
(Solved)
A charged electroscope is used in electrostatics study. State two of its uses.
Date posted:
October 1, 2017
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Answers (1)
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What does the following statement represent? ‘like charges repel while unlike charge attract’.
(Solved)
What does the following statement represent? ‘like charges repel while unlike charge attract’.
Date posted:
October 1, 2017
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Answers (1)
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State the kind of image formed in a pinhole camera when the pinhole is enlarged
(Solved)
State the kind of image formed in a pinhole camera when the pinhole is enlarged.
Date posted:
October 1, 2017
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Answers (1)
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A barber places two mirrors in parallel. State the number of images formed if a client sat between them.
(Solved)
A barber places two mirrors in parallel. State the number of images formed if a client sat between them.
Date posted:
October 1, 2017
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Answers (1)
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An image is always formed upside down in a pin hole camera. State the reason.
(Solved)
An image is always formed upside down in a pin hole camera. State the reason.
Date posted:
September 29, 2017
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Answers (1)
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Give a reason why mercury is a suitable liquid for use in a barometer.
(Solved)
Give a reason why mercury is a suitable liquid for use in a barometer.
Date posted:
September 29, 2017
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Answers (1)
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A girl opened a strong perfume in class bought from the beauty shop. State the reason why the perfume was detected throughout the room.
(Solved)
A girl opened a strong perfume in class bought from the beauty shop. State the reason why the perfume was detected throughout the room.
Date posted:
September 29, 2017
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Answers (1)
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Differentiate between floatation and sinking in terms Archimedes principle.
(Solved)
Differentiate between floatation and sinking in terms Archimedes principle.
Date posted:
September 28, 2017
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Answers (1)
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State two conditions that must be met for a gas to obey pressure law.
(Solved)
State two conditions that must be met for a gas to obey pressure law.
Date posted:
September 28, 2017
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Answers (1)
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State two properties which makes the oil suitable for use in machines
(Solved)
State two properties which makes the oil suitable for use in machines
Date posted:
September 28, 2017
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Answers (1)
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Give a reason why ink is most likely to ooze out of a pen when one is up in a plane.
(Solved)
Give a reason why ink is most likely to ooze out of a pen when one is up in a plane.
Date posted:
September 28, 2017
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Answers (1)
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Distinguish between velocity and speed.
(Solved)
Distinguish between velocity and speed.
Date posted:
September 28, 2017
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Answers (1)
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State any two ways of minimizing heat gains to a substance placed in a vacuum flask.
(Solved)
State any two ways of minimizing heat gains to a substance placed in a vacuum flask.
Date posted:
September 28, 2017
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Answers (1)