Answer:
3 h 45 min
Explanation:
6 - 2 = 4
4 - .15 = 3 45
Hopefully this helps you :)
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Mechanical digestion begins in the mouth as the food is chewed.(it prepares the food for chemical digestion) Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. Chemical digestion begins in the mouth when food mixes with saliva. Saliva contains an enzyme (amylase) that begins the breakdown of carbohydrates.
Answer:
V = 5.4 m/s
Explanation:
It is given that,
Let mass of the block, m = 10 kg
Spring constant of the spring, k = 2 kN/m = 2000 N/m
Speed of the block, v = 6 m/s
Compression in the spring, x = 15 cm = 0.15 m
Let V is the speed of the block moving at the instant the spring has been compressed 15 cm. It can be calculated using the conservation of energy of spring mass system.




V = 5.61 m/s
From the given options,
V = 5.4 m/s
Hence, this is the required solution.
Answer:
0.25714 m/s
Explanation:
= Mass of 45 kg skater
= Mass of 60 kg skater
= Speed of 45 kg skater
= Speed of 60 kg skater
As the momentum is conserved

= Relative speed = 0.6 m/s

The speed of the 60kg skater is 0.25714 m/s
Once a hypothesis is tested and confirmed and then tested again and confirmed again by others, it may provide the basis for, or become a part of, a <em>theory </em>.