Answer:
high frequent sound
Explanation:
because if its low than its slower.
63 hertz.
This is because a hertz is how often a sound wave repeats.
Answer:
1. Urea, (d)Fertilizer
2. Combines, (c) Harvesting and threshing
3. Silos, (b) Storage of grains
4. Seed drills, (a) Sowing seeds
5. Irrigation, (f) Sprinklers
6. Tilling, (e) Preparation of soil
Explanation:
1) Urea is a widely used and important fertilizer in the agricultural industry
2) The combine harvester combines three categories of harvesting grain drops such as threshing reaping and winnowing
3) Silos are used to store grains
4) A seed drill is a seed planting mechanism for burying seeds to a particular depth during seed planting
5) Irrigation is the application of required volume of water to plants
6) Tilling is the digging, turning, and staring operations meant to prepare the soil.
Answer:
100 m/s
Explanation:
SI units of distance and time are <em>meters</em> and <em>seconds</em>. km and hours are derived units. To express speed in SI units, it must be expressed as <em>meters per second</em>.
360 km/h = 100 m/s
_____
There are 3600 seconds in 1 hour, so 1 m/s = 3600 m/h = 3.6 km/h.