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
Answer:
A.
Explanation:
The amount of mass always stays the same, matter cannot be created nor destroyed, it can only change forms. Thus, the answer is A.
Answer:
The pressure of 0.5 mole of nitrogen gas=
Given:
Moles of nitrogen gas=0.5mole
Volume of nitrogen gas=5L
Temperature of nitrogen gas=203K
To Find:
Pressure of 0.5g mole of nitrogen gas
<u>Step by Step by Explanation:</u>
Formula used for calculating the pressure of a gas is achieved through ideal gas equation
According to Ideal Gas;
From this above equation, pressure can be calculated as
Where P=Pressure of the gas
N=number of moles=0.5moles
R=Gas constant
V=Volume of nitrogen gas in litres=5L
T=Temperature of nitrogen gas=203K
Substitute all the values in the above equation we get
Result:
Thus the pressure of 0.5 mole of nitrogen gas is <u></u><u>
</u>
Sodium is categorized as a B. Element.
Answer:
The atoms in a liquid are closely packed, but able to slide past eachother.
The atoms in a gas spread as far apart as possible.
a solid has a definite shape and volume.
The shape of a liquid can change, but the volume is definite.