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Repulsion occurs only between like poles of a magnet, attraction can occur between a magnet and a magnet material and between unlike poles of two magnets
chrispohmomanyi answered the question on September 18, 2017 at 16:13
- An electron in an excited atom falls from energy levels E2 to energy level E1. Write an equation
relating the energy change to the frequency f,...(Solved)
An electron in an excited atom falls from energy levels E2 to energy level E1. Write an equation
relating the energy change to the frequency f, of the radiation emitted. Explain why new symbols
used.
Date posted: September 18, 2017. Answers (1)
- Define the term acceleration.(Solved)
Define the term acceleration.
Date posted: September 18, 2017. Answers (1)
- State two factors that would raise the boiling point of water to above 100oC.(Solved)
State two factors that would raise the boiling point of water to above 100oC.
Date posted: September 18, 2017. Answers (1)
- Give a reason why weight of a body varies from one planet to another(Solved)
Give a reason why weight of a body varies from one planet to another
Date posted: September 18, 2017. Answers (1)
- State two factors affecting conductivity of solids(Solved)
State two factors affecting conductivity of solids.
Date posted: September 18, 2017. Answers (1)
- Distinguish between a basic physical quantity and a derived physical quantity giving an example of each(Solved)
Distinguish between a basic physical quantity and a derived physical quantity giving an example of each.
Date posted: September 18, 2017. Answers (1)
- What is the name given to the method of charging an electroscope where it requires an opposite charge to the one of the charging materials?(Solved)
What is the name given to the method of charging an electroscope where it requires an opposite charge to the one of the charging materials?
Date posted: September 18, 2017. Answers (1)
- A negatively, charged rod is brought close to (but not touching ) an uncharged sphere. If the sphere is momentarily earthed and then the...(Solved)
A negatively, charged rod is brought close to (but not touching ) an uncharged sphere. If the sphere is momentarily earthed and then the rod is removed, briefly explain what happens.
Date posted: September 18, 2017. Answers (1)
- Distinguish between mass and weight of a body stating the S.I units for each(Solved)
Distinguish between mass and weight of a body stating the S.I units for each.
Date posted: September 18, 2017. Answers (1)
- Define electric current and state its SI unit(Solved)
Define electric current and state its SI unit
Date posted: September 18, 2017. Answers (1)
- State two factors which affect pressure in liquids(Solved)
State two factors which affect pressure in liquids
Date posted: September 18, 2017. Answers (1)
- Name 3 types of forces that act without contact(Solved)
Name 3 types of forces that act without contact
Date posted: September 18, 2017. Answers (1)
- State three precautions that must be taken when using the density bottle(Solved)
State three precautions that must be taken when using the density bottle
Date posted: September 18, 2017. Answers (1)
- State why most braking systems use liquids and not gases.(Solved)
State why most braking systems use liquids and not gases.
Date posted: September 18, 2017. Answers (1)
- One property of a liquid that is considered while constructing a liquid – in – glass thermometer isthat the liquid expands more than the glass...(Solved)
One property of a liquid that is considered while constructing a liquid – in – glass thermometer is
that the liquid expands more than the glass for the same temperature change. State any other two
properties of the liquids that are considered
Date posted: September 18, 2017. Answers (1)
- State the assumption made when calculating the size of a molecule in the thin oil film experiment(Solved)
State the assumption made when calculating the size of a molecule in the thin oil film experiment
Date posted: September 18, 2017. Answers (1)
- Show that the force driving the liquid through the U – tube is proportional to the height, h(Solved)
Show that the force driving the liquid through the U – tube is proportional to the height, h
Date posted: September 18, 2017. Answers (1)
- Suppose the handle bars of a wheelbarrow are extended, which force(s) would change and how(Solved)
Suppose the handle bars of a wheelbarrow are extended, which force(s) would change and how
Date posted: September 18, 2017. Answers (1)
- Define centripetal acceleration(Solved)
Define centripetal acceleration
Date posted: September 18, 2017. Answers (1)
- A measuring cylinder contains 20cm3 of water. 10cm3 of salt is added and stirred. Explain why the volume is not 30cm^3.(Solved)
A measuring cylinder contains 20cm3 of water. 10cm3 of salt is added and stirred. Explain why the volume is not 30cm3.
Date posted: September 18, 2017. Answers (1)