Between 12 to 16 weeks, depending on water and food supply, the frog has completed the full growth cycle. So the male frogs grow old at the age(s) of 2-3 years old for breeding.
The largest reservoir of the Earth's carbon is located in the deep-ocean, with 36,000 billion tons of carbon stored, whereas approximately 65,500 billion tons are found on Earth combined.
This is by far the largest reservoir, carbon dioxide is stored in the interior of the earth in the form of carbonate rocks, such as limestone, dolomites, and chalk.
The car travels a distance of
(8.0 m/s) (5 s) + 1/2 (10.0 m/s²) (5 s)² = 165 m
The answer is D. <span>iron, cobalt, and nickel</span>
Answer:
2. The metal surface exerts less frictional force because there are fewer bumps and irregularities on it than there are on the concrete.
Explanation:
Frictional force is a force that is exerted between two surfaces in contact with each other. Frictional force always opposes the direction of relative motion of the two surfaces: for instance, for a ball moving along a surface, the force of friction exerted by the surface on the ball points opposite to the direction of motion of the ball.
The magnitude of the frictional force for a ball moving on a flat surface is given by
where
is the coefficient of friction
m is the mass of the ball
g is the acceleration of gravity
The value of depends on the type of surface involved. In particular, a smooth surface has a smaller value of , while a rough surface will have a bigger value. In this case, we are comparing a smooth metal surface with concrete: since the metal surface has fewer bumps and irregularities than concrete, it has a smaller value of coefficient of friction, so it exerts less frictional force than concrete.