To increase the time of impact; thus reducing the force.
chrispohmomanyi answered the question on November 2, 2017 at 11:37
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Four cells have an e.m.f. of 1.5v each. What is the total e.m.f. when the cells are in parallel and which in series.
(Solved)
Four cells have an e.m.f. of 1.5v each. What is the total e.m.f. when the cells are in parallel and which in series.
Date posted:
November 1, 2017
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Answers (1)
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Define the following terms (a) Closed circuit (b) Open circuit (c) Electromotive force (d) Lost volts
(Solved)
Define the following terms
a. Closed circuit
b. Open circuit
c. Electromotive force
d. Lost volts
Date posted:
November 1, 2017
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Answers (1)
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Calculate the amount of current flowing through a bulb if 500 coulombs of charge flow through it in 5 minutes.
(Solved)
Calculate the amount of current flowing through a bulb if 500 coulombs of charge flow through it in 5 minutes.
Date posted:
November 1, 2017
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Answers (1)
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Explain the following statements (i) A nylon shirt stick on the body and cracks when removed (ii) Tankers carrying fuel have loose chain hanging under them to touch the...
(Solved)
Explain the following statements
i. A nylon shirt stick on the body and cracks when removed
ii. Tankers carrying fuel have loose chain hanging under them to touch the ground as they move.
iii. A glass window if wiped with a dry cloth on a dry day takes little time to become dusty
Date posted:
November 1, 2017
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Answers (1)
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List two applications of electrostatics
(Solved)
List two applications of electrostatics
Date posted:
November 1, 2017
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Answers (1)
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Describe the process of charging by separation: having been supplied with two metal spheres with insulating stands, a polythene rod, woolen cloth, stand and thread.
(Solved)
Describe the process of charging by separation: having been supplied with two metal spheres with insulating stands, a polythene rod, woolen cloth, stand and thread.
Date posted:
November 1, 2017
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Answers (1)
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State the charge acquired by a body using the contact method
(Solved)
State the charge acquired by a body using the contact method
Date posted:
November 1, 2017
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Answers (1)
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You have been provided with polystyrene ball coated with aluminium paint, silk cloth, polythene rod, woolen cloth. Explain how one charges a conductor by contact...
(Solved)
You have been provided with polystyrene ball coated with aluminium paint, silk cloth, polythene rod, woolen cloth. Explain how one charges a conductor by contact method.
Date posted:
November 1, 2017
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Answers (1)
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Explain what happens in the process of charging by induction.
(Solved)
Explain what happens in the process of charging by induction.
Date posted:
November 1, 2017
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Answers (1)
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You have been provided with a polystyrene ball coated with aluminium, silk thread, glass rod, silk cloth, stand, polythene rod. Explain how you can charge...
(Solved)
You have been provided with a polystyrene ball coated with aluminium, silk thread, glass rod, silk cloth, stand, polythene rod. Explain how you can charge a conductor by the induction method.
Date posted:
November 1, 2017
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Answers (1)
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Explain how a rise in the temperature of a gas causes rise in the pressure of the gas if the volume is kept constant
(Solved)
Explain how a rise in the temperature of a gas causes rise in the pressure of the gas if the volume is kept constant
Date posted:
November 1, 2017
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Answers (1)
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Define friction and state the factors it depends on
(Solved)
Define friction and state the factors it depends on
Date posted:
November 1, 2017
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Answers (1)
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Explain how convection takes place in a fluid
(Solved)
Explain how convection takes place in a fluid
Date posted:
November 1, 2017
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Answers (1)
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State the conditions for total internal reflection to occur
(Solved)
State the conditions for total internal reflection to occur
Date posted:
November 1, 2017
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Answers (1)
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State two factors affecting the velocity of sound in air
(Solved)
State two factors affecting the velocity of sound in air
Date posted:
November 1, 2017
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Answers (1)
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State the charge of the electroscope
(Solved)
State the charge of the electroscope
Date posted:
November 1, 2017
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Answers (1)
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State any two ways of increasing the size of an image formed by a fixed pinhole camera
(Solved)
State any two ways of increasing the size of an image formed by a fixed pinhole camera
Date posted:
November 1, 2017
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Answers (1)
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(a) What is electrostatics? (b) Name two types of charges (c) Give the SI units of charge and other smaller units of charges and other smaller units...
(Solved)
a. What is electrostatics?
b. Name two types of charges
c. Give the SI units of charge and other smaller units of charges and other smaller units of charge.
d. Explain how a body become positively or negatively charged
Date posted:
October 31, 2017
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Answers (1)
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A boy stands 400 cm from a large wall-mirror. He then walks slowly towards the mirror at a speed of 40 cm ...
(Solved)
A boy stands 400 cm from a large wall-mirror. He then walks slowly towards the mirror at a speed of 40 cm per second. What is the distance between him and his image after 5 second?
Date posted:
October 31, 2017
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Answers (1)
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(a)What is main purpose of the translucent screen on the pinhole camera? (b)a lamp placed 9 cm high stand in...
(Solved)
(a)What is main purpose of the translucent screen on the pinhole camera?
(b)a lamp placed 9 cm high stand in front of a pin hole camera at a distance of 27 cm. The camera screen is 12 cm from the pinhole. What is the height of the image on the screen?
Date posted:
October 31, 2017
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Answers (1)