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A solution is made when one substance called the solute "dissolves" into another substance called the solvent. Dissolving is when the solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules.
The force of a spring can be calculated by the expression:
F = kx where k is a constant and x is the distance.
From the problem statement, we can solve the value of k from the initial conditions given as F = 25 N and x = 2 cm.
25 = k (0.02)
k = 1250
We use the work formula which is force times the distance resulting to the expression:
W = (1/2)(kx^2)
W = (1/2)(1250)(0.03^2)
W = 0.5625 J
Ok. I finally understood that you need to complete (fill in the blank) the last sentence: The weight of a space probe on the surface of Mars is about ______________
The answer is one third its weight on the surface of Earth.
You can find that by using the formula for the weight:
weight = mass * acceleration due to gravity
So, given that the mass is constant and the acceleration due to gravity is one third, the weight is also one third.
Answer: 3.49x 10^25 molecules H2O
Explanation: To find the number of molecules of H2O we will use the relationship between moles and Avogadro's Number.
57.9 moles H2O x 6.022x10²³ moles H2O / 1 mole H2O
= 3.49x10^25 molecules H2O
Cancel out the moles of H2O.
