They can be described as small in quantity and very dangerously radioactive.
Answer:
893 Newtons
Explanation:
m = Mass of Usain Bolt = 94 kg
a = Acceleration of Usain Bolt in the first 0.89 seconds = 9.5 m/s²
From Newton's Second law
Force



The average horizontal force exerted by Bolt against the ground during the first 0.890 s of the race is 893 Newtons
Water is a really good conductor of sound so I would have to say that it would be to send the message underwater because a more dense medium produces a louder sound
1. Take a breaker
2. Put a sieve on it
3. Pour the mixture and shake the sieve gently
4. Wait for the flour to fall. After the flour falls pour the rice from the sieve into other beaker then do experiment again for fair testing(optional)