Answer:
Microphones are a type of transducer - a device which converts energy from one form to another. Microphones convert acoustical energy (sound waves) into electrical energy (the audio signal). Different types of microphone have different ways of converting energy but they all share one thing in common: The diaphragm.
Explanation:
Answer:
Three types of thermal expansion are linear expansion,s superficial expansion,cubical expansion
The correct option to the question is Matter.
Matter makes up everything. matter can be solid, liquid, or gas. matter is made up of atoms, or tiny particles that are the smallest unit of matter.
Moreover, Matter can be described as,
Matter is anything that has occupies space (has mass and volume).
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The heat energy released from a piece of wire or any other section of a circuit is:
Energy = (voltage between its ends) x (current through it) x (time it's been going)
Answer:
- The initial speed of the truck is 21.93 m/s, and the initial speed of the car is 19.524 m/s
Explanation:
We can use conservation of momentum to find the initial velocities.
Taking the unit vector 
pointing north and 
pointing east, the final velocity will be
The final linear momentum will be:
As there are not external forces, the total linear momentum must be constant.
So:
As initially the car is travelling east, and the truck is travelling north, the initial linear momentum must be
so:
so
So, for the truck
And, for the car
