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When the wire vibrates it sets the air inside the hollow box into vibration and a louder sound is produced.
chrispohmomanyi answered the question on October 4, 2017 at 07:42
- Two cups; a metallic one and a plastic one holding water were left outdoor overnight on a cold night. Both cups were covered. Which...(Solved)
Two cups; a metallic one and a plastic one holding water were left outdoor overnight on a cold night. Both cups were covered. Which cup will have a cooler water in the morning? Explain your choice.
Date posted: October 4, 2017. Answers (1)
- When pumping up a tyre, the more you pump the harder it becomes to pump. Explain.(Solved)
When pumping up a tyre, the more you pump the harder it becomes to pump. Explain.
Date posted: October 4, 2017. Answers (1)
- How is the human eye able to form a focused image.(Solved)
How is the human eye able to form a focused image.
Date posted: October 4, 2017. Answers (1)
- State three factors that affect the capacitance of a capacitor.(Solved)
State three factors that affect the capacitance of a capacitor.
Date posted: October 4, 2017. Answers (1)
- State two changes you would make in a mercury thermometer so that it can measure temperature accurately.(Solved)
State two changes you would make in a mercury thermometer so that it can measure temperature accurately.
Date posted: October 4, 2017. Answers (1)
- A person alighting from a moving matatu tends to spread his legs. Explain why. (Solved)
A person alighting from a moving matatu tends to spread his legs. Explain why.
Date posted: October 4, 2017. Answers (1)
- State the law that relates to the elasticity of an elastic spring when acted on by force. (Solved)
State the law that relates to the elasticity of an elastic spring when acted on by force.
Date posted: October 4, 2017. Answers (1)
- State two applications of surface tension.(Solved)
State two applications of surface tension.
Date posted: October 4, 2017. Answers (1)
- State one factor that affects the electrostatic force.(Solved)
State one factor that affects the electrostatic force.
Date posted: October 4, 2017. Answers (1)
- What is meant by the change of state?(Solved)
What is meant by the change of state?
Date posted: October 4, 2017. Answers (1)
- Explain the usefulness of a vernier scale in the vernier callipers.(Solved)
Explain the usefulness of a vernier scale in the vernier callipers.
Date posted: October 4, 2017. Answers (1)
- Give an example where a liquid still sinks yet it is being heated.(Solved)
Give an example where a liquid still sinks yet it is being heated.
Date posted: October 4, 2017. Answers (1)
- Explain heat transfer by conduction in solids.(Solved)
Explain heat transfer by conduction in solids.
Date posted: October 4, 2017. Answers (1)
- State two factors which affect the centripetal force of a body moving in a circle.(Solved)
State two factors which affect the centripetal force of a body moving in a circle.
Date posted: October 4, 2017. Answers (1)
- State the function of the following features in a liquid in glass thermometer.
1. Thin walled bulb
2. Thick walled stem.(Solved)
State the function of the following features in a liquid in glass thermometer.
1. Thin walled bulb
2. Thick walled stem.
Date posted: October 4, 2017. Answers (1)
- State two effects of anomalous expansion of water.(Solved)
State two effects of anomalous expansion of water.
Date posted: October 4, 2017. Answers (1)
- Give three ways in which the power of an electric motor can be increased.(Solved)
Give three ways in which the power of an electric motor can be increased.
Date posted: October 4, 2017. Answers (1)
- State the effect of adding sodium chloride to ice at 0 degrees.(Solved)
State the effect of adding sodium chloride to ice at 0 degrees.
Date posted: October 4, 2017. Answers (1)
- Explain the function of the small hole at the side of the cover of a ball point pen. (Solved)
Explain the function of the small hole at the side of the cover of a ball point pen.
Date posted: October 4, 2017. Answers (1)
- Why is the inner part of a pinhole camera painted black?(Solved)
Why is the inner part of a pinhole camera painted black?
Date posted: October 4, 2017. Answers (1)