Podcast
Questions and Answers
What is density defined as?
What is density defined as?
- Volume per unit mass
- Weight per unit length
- Mass per unit area
- Mass per unit volume (correct)
Which factor affects the density of an object if the volume remains the same?
Which factor affects the density of an object if the volume remains the same?
- Shape of the object
- Temperature
- Mass of the object (correct)
- Material composition
How does the density of an object change when its mass increases?
How does the density of an object change when its mass increases?
- Density becomes zero
- Density remains constant
- Density decreases
- Density increases (correct)
In the context of irregular solids, how is the volume calculated?
In the context of irregular solids, how is the volume calculated?
Which precaution is taken to prevent parallax error when measuring liquid volume?
Which precaution is taken to prevent parallax error when measuring liquid volume?
What is the relationship between mass and density for the same material?
What is the relationship between mass and density for the same material?
What is the SI unit for measuring speed?
What is the SI unit for measuring speed?
What symbol represents acceleration?
What symbol represents acceleration?
What does a negative acceleration value indicate?
What does a negative acceleration value indicate?
What does a speed-time graph with a horizontal line represent?
What does a speed-time graph with a horizontal line represent?
What is the SI unit for measuring force?
What is the SI unit for measuring force?
What is the combined effect of several forces called?
What is the combined effect of several forces called?
What is the unit for measuring current?
What is the unit for measuring current?
Which instrument is used to measure current in a circuit?
Which instrument is used to measure current in a circuit?
When an object gains electrons, what type of charge does it acquire?
When an object gains electrons, what type of charge does it acquire?
What happens to the resistance of a wire if its length increases?
What happens to the resistance of a wire if its length increases?
Which component is connected in series to measure current in a circuit?
Which component is connected in series to measure current in a circuit?
What type of current flows in only one direction at a constant value?
What type of current flows in only one direction at a constant value?
What happens when a magnetic substance is placed near a south pole?
What happens when a magnetic substance is placed near a south pole?
How can de-magnetization be achieved for a magnet?
How can de-magnetization be achieved for a magnet?
What happens to the strength of the magnetic field as the current passing through a wire increases?
What happens to the strength of the magnetic field as the current passing through a wire increases?
What effect does placing a piece of steel inside a wire coil have on the magnetism?
What effect does placing a piece of steel inside a wire coil have on the magnetism?
Why does a piece of steel retain some magnetism even after the current is switched off?
Why does a piece of steel retain some magnetism even after the current is switched off?
What happens when a piece of iron is placed inside a wire coil?
What happens when a piece of iron is placed inside a wire coil?
What causes the Earth to have day and night?
What causes the Earth to have day and night?
Which factor can make an electromagnet stronger?
Which factor can make an electromagnet stronger?
What motion of the Earth causes the creation of different seasons?
What motion of the Earth causes the creation of different seasons?
Why does the Moon appear to change shape?
Why does the Moon appear to change shape?
How can an electromagnet's polarity be reversed?
How can an electromagnet's polarity be reversed?
What is responsible for creating day and night on Earth?
What is responsible for creating day and night on Earth?
