Answer:
The two factors that increase the size of a population are natality, which is the number of individuals that are added to the population over a period of time due to reproduction, and immigration, which is the migration of an individual into a place.
Explanation:
according to ideal gas equation , we have
PV = n RT
where P = pressure , V = Volume , n = number of moles , R = gas constant and
T = temperature
the formula can be rearranged as
T = PV/(nR)
at constant temperature , the formula can be reformed as
T₁ = T₂
P₁V₁/(nR) = P₂V₂/(nR)
hence
P₁V₁ = P₂V₂
where
P₁ = initial pressure
P₂ = final pressure = 2 P₁
V₁ = initial volume
V₂ = final volume
P₁V₁ = (2 P₁ )V₂
V₁ = (2) V₂
V₂ = V₁ /2
hence the Volume is halved
Answer is A, Sound waves will travel faster on warm air because collisions of molecules of air in warm air are greater.
The answers are C. and D. Hope this helps.
Answer:
Work done = 838470 Joules.
Explanation:
Given the following data;
Power = 19 hp
Time = 1 minute to seconds = 60 seconds.
Next, we would convert the unit of power in "hp" to "Watt."
1 Watt = 0.00135962 horsepower
x Watt = 19 horsepower
Cross-multiplying, we have;
19 = 0.00135962x
x = 19/0.00135962
x = 13974.5 Watts.
Now, to find the work done in moving the mower;
Work done = power * time
Substituting into the formula, we have;
Work done = 13974.5 * 60
Work done = 838470 Joules.