1. Answer: 7.75 seconds
Explanation: 76-14=62 metres
62/8=7.75 seconds
2. Answer: 2.5 seconds
Explanation: 28-18=10 metres
10/4=2.5 seconds
Answer:
- 20 j or 20 N/m
Explanation:
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In a liquid, particles are close together, moving rapidly with random motion. The particles collide with each other more frequently compared to gases.
Answer:
Solids
Explanation:
Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air.
Answer:
b 15
Explanation:
the atomic number is the number of the element
