1. Used in airport for security checks
2. Used to check the percentage of a certain element in the core
3. Used to identify the flaws in the metal casing
4. Used to check the characteristic qualities of gemstones.
chrispohmomanyi answered the question on October 10, 2017 at 04:35
-
State the dangers of X-rays to human body
(Solved)
State the dangers of X-rays to human body.
Date posted:
October 10, 2017
.
Answers (1)
-
State types of X-rays
(Solved)
State types of X-rays
Date posted:
October 10, 2017
.
Answers (1)
-
State the properties of X-rays
(Solved)
State the properties of X-rays
Date posted:
October 10, 2017
.
Answers (1)
-
State one use of a CRO
(Solved)
State one use of a CRO
Date posted:
October 10, 2017
.
Answers (1)
-
State four advantages of a C.R.O as a voltmeter.
(Solved)
State four advantages of a C.R.O as a voltmeter.
Date posted:
October 10, 2017
.
Answers (1)
-
State four properties of cathode rays
(Solved)
State four properties of cathode rays
Date posted:
October 10, 2017
.
Answers (1)
-
State four sources of mains electricity
(Solved)
State four sources of mains electricity
Date posted:
October 10, 2017
.
Answers (1)
-
An electrical heater rated 240 v, 2000 w is to be connected to a 240 v mains supply through a fuse of 9.0 A. ...
(Solved)
An electrical heater rated 240 v, 2000 w is to be connected to a 240 v mains supply through a fuse of 9.0 A. Will the fuse be suitable? Give a reason.
Date posted:
October 9, 2017
.
Answers (1)
-
A n electric bulb rated, 4W is operating on a 240 v mains. Determine the filament’s resistance.
(Solved)
A n electric bulb rated, 4W is operating on a 240 v mains. Determine the filament’s resistance.
Date posted:
October 9, 2017
.
Answers (1)
-
A capacitor is connected to the distributor in some petrol engines which use spark plugs. What is its function?
(Solved)
A capacitor is connected to the distributor in some petrol engines which use spark plugs. What is its function?
Date posted:
October 9, 2017
.
Answers (1)
-
What does polarization show in light?
(Solved)
What does polarization show in light?
Date posted:
October 9, 2017
.
Answers (1)
-
State two conditions under which Ohm’s law is obeyed in a given metal.
(Solved)
State two conditions under which Ohm’s law is obeyed in a given metal.
Date posted:
October 9, 2017
.
Answers (1)
-
If the p.d. of 0.75 v is applied at the end of a wire of length 1.0 m long with a cross-sectional area of 1.6...
(Solved)
If the p.d. of 0.75 v is applied at the end of a wire of length 1.0 m long with a cross-sectional area of 1.6 x 10^-4 m^2 and a current of 1.4 A flow through it. Calculate its resistivity.
Date posted:
October 9, 2017
.
Answers (1)
-
Given that the resistance of a wire is 1 ohm. Its resistivity is 5.0 x 10^-7 ohms and its cross- sectional area is 4.0...
(Solved)
Given that the resistance of a wire is 1 ohm. Its resistivity is 5.0 x10^-7 ohms and its cross- sectional area is 4.0 x 10 -6 m^2. Find its length.
Date posted:
October 9, 2017
.
Answers (1)
-
A sliding body on an inclined plane is affected by some factors. Name two factors.
(Solved)
A sliding body on an inclined plane is affected by some factors. Name two factors.
Date posted:
October 9, 2017
.
Answers (1)
-
A horizontal force of 24 N is applied on a metallic block of mass 5 kg placed on a horizontal surface. The block was accelerated...
(Solved)
A horizontal force of 24 N is applied on a metallic block of mass 5kg placed on a horizontal surface. The block was accelerated to 10 m/s^2. Determine the frictional force between the block and the surface.
Date posted:
October 9, 2017
.
Answers (1)
-
A wheelbarrow of mass 50 kg was pushed along a horizontal path by a horizontal force of 10 N and moves with a constant velocity....
(Solved)
A wheelbarrow of mass 50 kg was pushed along a horizontal path by a horizontal force of 10 N and moves with a constant velocity. The force was then increased to 18N. Determine :
a. The resistance to the motion of the wheelbarrow
b. The acceleration of the wheelbarrow.
Date posted:
October 9, 2017
.
Answers (1)
-
State any three ways in which the induced emf in the generator can be increased.
(Solved)
State any three ways in which the induced emf in the generator can be increased.
Date posted:
October 9, 2017
.
Answers (1)
-
State types of transformers
(Solved)
State types of transformers
Date posted:
October 9, 2017
.
Answers (1)
-
State three factors that affect electrical energy.
(Solved)
State three factors that affect electrical energy.
Date posted:
October 9, 2017
.
Answers (1)