An example of the use of expansion of materials when they are heated is in
Thermometers. Thermometer is an instrument which is used to measure the 
temperature of a place.
It contains mercury which expands as temperature increases. This is used
to accurately determine the temperature of an object.
The disadvantage of expansion of materials when they are heated can be 
seen in roads as there is expansion of the surface as a result of heat 
exposure leads to roads being rough thereby incurring more costs for 
repairs.
Read more about Heat expansion on brainly.com/question/1166774
 
        
             
        
        
        
Answer:
Mechanical energy
Explanation:
A car changes chemical energy from fuel into thermal energy and mechanical energy.
Mechanical energy can be defined as the type of energy that is possessed by an object due to its motion or position. Mechanical energy is the sum of potential energy and kinetic energy, that is, the sum of energy in motion and stored energy. Examples of mechanical energy includes driving a car, riding a bicycle, listening to music etc.
Types of mechanical energy
1. Motion energy (kinetic energy)
2. Stored energy(potential energy)
Mechanical energy = Kinetic energy + Potential energy
 
        
             
        
        
        
Answer:
<u><em>0.03 m/s</em></u>
Explanation:
<em>Applying law of conservation of momentum, </em>
- <em>m₁v₁ + m₂v₂ = (m₁ + m₂)v</em>
- <em>0.105(24) + 75(0) = (0.105 + 75)v</em>
- <em>75.105v = 2.52</em>
- <em>v = 2.52/75.105</em>
- <em>v = </em><u><em>0.03 m/s</em></u>
 
        
             
        
        
        
It protects the electrical appliance and the person from electrical shocks/faults.
Hope it Helped!
 
        
             
        
        
        
Answer:
took longer to complete one oscillation, that means its PERIOD increased, and the distance between the peaks of the graph would be longer.
 line would be less. the period of oscillation would have any effect on the graph