Answer:
The smaller object will move at 30 m/s
Explanation:
From the principle of conservation of linear momentum,
Momentum of objects before collision = momentum of objects after collision.
where are the masses and velocities of the objects 1 and 2 respectively before collision.
Hence, the object will move at 30 m/s
Answer:
true, the alternative would be postzygotic barriers.
Explanation:
Answer:
pioneer species
Explanation:
Species that arrive first in the newly created environment are called pioneer species, and through their interactions they build a simple initial biological community. This community becomes more complex as new species arrive.
A is incorrect. This sticking together of like substances is called cohesion. Depending on how attracted molecules of the same substance are to one another, the substance will be more or less cohesive. Hydrogen bonds cause water to be exceptionally attracted to each other. Therefore, water is very cohesive.
B is correct. The property in which water molecules stick to one another tightly. The property in which water molecules easily evaporate into a gas.
C is incorrect. In cohesion, water molecules are attracted to each other (because of hydrogen bonding), keeping the molecules together at the liquid-air (gas) interface, although there is no more room in the glass.