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The figure below shows ticker tape chart for a trolley pushed up a slope. Every section of the tape
contains 5 spaces. If the ticker-tape timer...
(Solved)
The figure below shows ticker tape chart for a trolley pushed up a slope. Every section of the tape
contains 5 spaces. If the ticker-tape timer has a frequency of 50 Hz, determine the
acceleration of the trolley.
Date posted:
April 10, 2019
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Answers (1)
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The figure below shows a ticker-tape for trolley moving over an inclined plane, a frequency
of 50Hz.
(Solved)
The figure below shows a ticker-tape for trolley moving over an inclined plane, a frequency
of 50Hz.
Calculate,
a. Initial velocity
b. Final velocity
c. Acceleration of the trolley
Date posted:
April 10, 2019
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Answers (1)
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The ticker-tape in Figure below was produced by a toy car moving over an inclined plane.
If the ticker-tape timer produced 100 dots per second, find...
(Solved)
The ticker-tape in Figure below was produced by a toy car moving over an inclined plane.
If the ticker-tape timer produced 100 dots per second, find the
a. Initial velocity at A
b. Final velocity at B
c. Acceleration of the toy car.
Date posted:
April 10, 2019
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Answers (1)
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The figure below shows a strip of ticker tape pulled by a moving trolley. The ticker tape timer
was vibrating at 50Hz. Find the average velocity...
(Solved)
The figure below shows a strip of ticker tape pulled by a moving trolley. The ticker tape timer
was vibrating at 50Hz. Find the average velocity of the trolley.
Date posted:
April 10, 2019
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Answers (1)
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The figure below shows an approximate velocity-time graph for a vehicle.
(Solved)
The figure below shows an approximate velocity-time graph for a vehicle.
Using the graph, determine;
a. The value of the acceleration in region BC
b. The total distance travelled
c. The average velocity for the whole journey
Date posted:
April 10, 2019
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Answers (1)
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A car is brought to rest from 20m/s in 2 seconds. Determine
(Solved)
A car is brought to rest from 20m/s in 2 seconds. Determine
a. Its acceleration
b. The magnitude of acceleration
c. Its deceleration
Date posted:
April 10, 2019
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Answers (1)
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A ship cruises 370 km towards east in in 10 hours. It then changes course southwards covering165 km in 5 hours. Determine
(Solved)
A ship cruises 370 km towards east in in 10 hours. It then changes course southwards covering
165 km in 5 hours. Determine
a. Total displacement of the ship.
b) The average speed of the ship.
c. The average velocity of the ship
Date posted:
April 10, 2019
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Answers (1)
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The half-life of a radio-active substance is 138 days. A sample of the substance has 8 x 1010 un-decayed nuclei at time t = 0....
(Solved)
The half-life of a radio-active substance is 138 days. A sample of the substance has 8 x 1010 un-decayed nuclei at time t = 0. How many un-decayed nuclei will be left after 690 days?
Date posted:
April 5, 2019
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Answers (1)
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One of the application of Beta emission (B) is controlling thickness gauge. Explain
how they are used for this purpose?
(Solved)
One of the application of Beta emission (B) is controlling thickness gauge. Explain
how they are used for this purpose?
Date posted:
April 5, 2019
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Answers (1)
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Th disintegrates into radium (Ra) by emission of two alpha and two beta particles as in equation.
(Solved)
Th disintegrates into radium (Ra) by emission of two alpha and two beta particles as in equation.
State
i) The atomic number of the daughter nuclide
ii) The mass number of the daughter nuclide
Date posted:
April 5, 2019
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Answers (1)
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The diagram below shows the paths taken by three radiations A, B and C from a radio
active isotope through an electric field
(Solved)
The diagram below shows the paths taken by three radiations A, B and C from a radio
active isotope through an electric field
i) State the charge on plate Y
ii) Identify the radiation A and C
iii) Give a reason why C deviates move A
Date posted:
April 5, 2019
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Answers (1)
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Uranium 235 was bombarded with a neutron and fission took place in the following manner:
(Solved)
Uranium 235 was bombarded with a neutron and fission took place in the following manner:
Determine the values of a and b
Date posted:
April 5, 2019
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Answers (1)
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Alpha particles have low penetrating power as opposed to beta particles. Give a reason for this
(Solved)
Alpha particles have low penetrating power as opposed to beta particles. Give a reason for this
Date posted:
April 5, 2019
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Answers (1)
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What evidence supports the fact that gamma rays are not charged
(Solved)
What evidence supports the fact that gamma rays are not charged
Date posted:
April 5, 2019
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Answers (1)
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Determine the value of x and y in the nuclear equation below:-
(Solved)
Determine the value of x and y in the nuclear equation below:-
Date posted:
April 5, 2019
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Answers (1)
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A radioactive element decays to 1/128 of its original activity after 49 days. Determine its
half –life
(Solved)
A radioactive element decays to 1/128 of its original activity after 49 days. Determine its
half –life
Date posted:
April 5, 2019
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Answers (1)
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Below is a nuclear reaction
(Solved)
Below is a nuclear reaction
i) Identify radiation K
ii) Determine the value of X and Y
Date posted:
April 5, 2019
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Answers (1)
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The figure shows the circuit of a modern X-ray tube
(Solved)
The figure shows the circuit of a modern X-ray tube
Name the part labeled C and state its function
Date posted:
April 5, 2019
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Answers (1)
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The diagram below shows simplified diagram of an x-ray tube,
(Solved)
The diagram below shows simplified diagram of an x-ray tube,
(a) Name the parts A, B, and C.
(b) What adjustments would be made to:
(i) Increase the penetrating power of the x-rays produced.
(ii) Increase the intensity of the rays produced.
(c) Name a suitable material for the part marked B and give a reason for your choice.
(d) Name a suitable material for the part marked C and sate its purpose.
(e) Why is it necessary to maintain a vacuum inside the tube?
Date posted:
April 5, 2019
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Answers (1)
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An x-ray tube is operating with an anode potential of 12Kv and a current of 10.0m.A:
(Solved)
An x-ray tube is operating with an anode potential of 12Kv and a current of 10.0m.A:
(i) Calculate the number of electrons hitting the anode per second
(ii) Determine the velocity with which the electrons strike the target
Date posted:
April 5, 2019
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Answers (1)