Tracks due to beta radiation
They are:
- Long, indicating their longer range in air.
- Thin, indication of their lower mass.
- Irregular in direction (not straight), meaning that they can be displaced by air particles.
Moraa orina answered the question on April 12, 2018 at 07:22
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State the characteristics of alpha radiation
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State the characteristics of alpha radiation
Date posted:
April 12, 2018
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What are the applications of photoelectric effect?
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What are the applications of photoelectric effect?
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April 12, 2018
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The threshold wavelength of a photoemissive surface is 0.45µm. calculate:
a. The threshold frequency of the surface.
b. The workfunction of the surface in eV.
c. The minimum...
(Solved)
The threshold wavelength of a photoemissive surface is 0.45µm. calculate:
a. The threshold frequency of the surface.
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Date posted:
April 12, 2018
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Calculate the energy of a photon of light of frequency 5.0x1014Hz in (a) joules (b) electron-volt.
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Calculate the energy of a photon of light of frequency 5.0x1014Hz in (a) joules (b) electron-volt.
Date posted:
April 12, 2018
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State any differences between x-rays and cathode rays.
(Solved)
State any differences between x-rays and cathode rays.
Date posted:
April 12, 2018
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An x-ray tube operates at 10kV and a current of 15mA. Calculate the number of electrons hitting the target per second.
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Date posted:
April 12, 2018
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Answers (1)
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Calculate the energy of x-rays whose frequency is 3x1016Hz.(Take h=6.63x10-9Js, e=1.6x10-19C, me=9.11x10-6kg and v=3.0x108m/s)
(Solved)
Calculate the energy of x-rays whose frequency is 3x1016Hz.(Take h=6.63x10-9Js, e=1.6x10-19C, me=9.11x10-6kg and ?=3.0x108m/s)
Date posted:
April 12, 2018
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Answers (1)
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State the uses of X-Rays
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State the uses of X-Rays.
Date posted:
April 12, 2018
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Explain how X-Rays are produced
(Solved)
Explain how X-Rays are produced
Date posted:
April 12, 2018
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State the uses of the Cathode Ray Oscilloscope (CRO)
(Solved)
State the uses of the Cathode Ray Oscilloscope (CRO)
Date posted:
April 12, 2018
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Answers (1)
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State the components of a cathode ray oscilloscope
(Solved)
State the components of a cathode ray oscilloscope
Date posted:
April 12, 2018
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Answers (1)
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An electric cooker has an oven rated 3 kW, a grill rated 2 kW and two rings each rated 500 W. The cooker operates from a 240V...
(Solved)
An electric cooker has an oven rated 3 kW, a grill rated 2 kW and two rings each rated 500 W. The cooker
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Date posted:
April 11, 2018
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A six bulb arrangement in a house runs for 8 hours every night for 5 days. If each bulb is rated 100 W and the cost of...
(Solved)
A six bulb arrangement in a house runs for 8 hours every night for 5 days. If each bulb is rated 100 W and the cost of electrical energy is sh. 2.60 per unit, how much will the owner of the house pay at the end of the five days?
Date posted:
April 11, 2018
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Answers (1)
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An electric cooker has an oven rated 3kW, a grill rated 2kW and two rings each rated 500W. The cooker operates from 240V...
(Solved)
An electric cooker has an oven rated 3kW, a grill rated 2kW and two rings each rated 500W. The cooker
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Date posted:
April 11, 2018
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Answers (1)
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A power station produces 50kW at 240V. The power is transmitted through cables with a resistance of 0.4?. Calculate the percentage power loss during...
(Solved)
A power station produces 50kW at 240V. The power is transmitted through cables with a resistance of
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Date posted:
April 11, 2018
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Answers (1)
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Some length of a power line has a resistance of 10? and is transmitting 11kV and a current of 1A. If the
voltage is stepped...
(Solved)
Some length of a power line has a resistance of 10Ω and is transmitting 11kV and a current of 1A. If the
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Date posted:
April 11, 2018
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Answers (1)
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State the main causes of energy losses in transformers:
(Solved)
State the main causes of energy losses in transformers:
Date posted:
April 11, 2018
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Answers (1)
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A student designed a transformer to supply a current of 10A at a potential difference of 60V to an electric motor from an ac supply...
(Solved)
A student designed a transformer to supply a current of 10A at a potential difference of 60V to an electric motor from an ac supply of 240V. if the efficiency of the transformer is 80%, calculate:
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b) The current in the primary coil
Date posted:
April 11, 2018
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Answers (1)
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Calculate the number of turns of the secondary coil of a step down transformer which would enable a 12V bulb
to be used with a...
(Solved)
Calculate the number of turns of the secondary coil of a step down transformer which would enable a 12V bulb
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Date posted:
April 11, 2018
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Answers (1)
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State the applications of electromagnetic induction
(Solved)
State the applications of electromagnetic induction
Date posted:
April 11, 2018
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Answers (1)