Answer:
Population 1 indicates growth while Population 2 indicates a declining population
Explanation:
Here, using the given rate of change of the population, we want to determine which of the two is growing and which is declining
From the rate of change of both, we can determine this. Looking at the differential equation for the first one, we can see that it is of positive value. Looking at the differential equation for the second one. we can see it is of negative value
While a positive change rate indicates growth, a negative change rate will indicate otherwise
Hence, we can conclude that the one with a negative rate change will indicate a declining population
Answer:
a bowling ball placed on the top shelf of a closet.
Explanation:
Potential energy is the energy that is stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height.
Mathematically,
Potential energy, PE = M × g × h
Answer:
(B) The number of protons - only the number of protons in the nucleus determines the element - mass and neutrons can vary for the same element
Answer:
(a) 918.5 m
(b) 334 m from the nearest mountain and 584.5 m from the furthest mountain
Explanation:
Echo is a reflected sound so the time taken is for twice the actual distance
Let the distance between the nearest mountains and man = x m
and the distance between furthest mountains and man = y m
Distance between two mountains = ( x + y ) m
Total distance covered by sound to produce first echo
= 2x m and time = 2 sec
=> 2y = 334 x 2
=> x =(334 x 2)/2 = 334 m
Total distance covered by sound to produce 2nd echo = 2y m and time = 3.5 sec
=> 2y = 334 x x 3.5
=> y = (334 x 3.5)/2 = 584.5 m
So, Distance b/w two clif = ( 334 + 584.5) = 918.5 m
(b)
The location
The man is 334 m from the nearest mountain and 584.5 m from the furthest mountain
The law of conservation of mass states the number of atoms of each element on product side must equal the number of atoms of each element on reactant side.
Ba has 1 atom on reactant side and 1 atom on product side
O has 2 atoms on reactant side and 2 atoms on product side
H has 2 atoms on reactant side and 2 atoms on product side
has 1 molecule on product side and 1 molecule on reactant side
Therefore the balanced equation is
