Scientist use a weather balloon to measurements in the upper troposphere.
Answer:
b) Are more concentrated.
Explanation:
Answer:
70.15 Joule
Explanation:
mass of man, m = 70 kg
intial length, l = 11 m
extension, Δl = 1.5 m
Let K is the spring constant.
In the equilibrium position
mg = K l
70 x 9.8 = K x 11
K = 62.36 N/m
Potential energy stored, U = 0.5 x K x Δl²
U = 0.5 x 62.36 x 1.5 x 1.5
U = 70.15 Joule
b.Water is important for shipping and trade.
c.Water is a valuable, profitable commodity.
d.All of the above
Answer;
-All of the above
Explanation;
-Water is one of the most important substances on earth. All plants and animals must have water to survive. If there was no water there would be no life on earth. Apart from drinking it to survive, people have many other uses for water such as cooking, washing clothes, cleaning, recreation, etc.
-Water is also essential for the healthy growth of farm crops and farm stock and is used in the manufacture of many products. Water is also important in our bodies; It facilitates digestion of food and absorption of nutrients through their dissolving in water, transports nutrients, chemicals and heat throughout the body. Water is our primary source of food.
Answer:
402m
Explanation:
We can solve this easily by using the free fall formula:
On both cases the final velocity will be 0m/s (maximum height), so we have:
We know that the velocity the person imparts to the ball will be the same either on Earth or on the Moon, so we write for both cases:
Which means
So we get (taking into account that gravity on earth is 6 times gravity on the Moon):