See how far the object travels in the amount of time
Answer:
Add
Explanation:
When two forces are acting in the same direction then there magnitude are added to each other
Let the first force is and second force is and when they act in same direction then their equivalent will be equal to
When they cat in opposite direction then their equivalent will be
Test the shampoo on different subjects with different hair types (Ex thick, thin) Keep the variables the same for each subject using constants, independent , and dependent variables to test the claim. See if there is any difference in the girls who used the shampoo with the secret ingredient Vs girls who used a regular shampoo with out that ingredient.
Answer:
(A) Strain = 0.0012
(b) Stress
(c) Young's modulus
Explanation:
Mass of the rock m = 75 kg
So weight of the rock
Length of the rope l = 18 m
Diameter of the rope d = 11 mm
Change in length of rope
So radius r = 5.5 mm = 0.0055 m
Cross sectional area
(a) Strain is equal to ratio change in length to original length
So strain
(b) Stress
(c) Young's modulus is equal to ratio of stress and strain
So young's modulus
Answer: 5.52 *10^-6J
Explanation: In order to explain this problem we have to take into account the expression for the stored energy in a capacitor which is given by:
U=Q^2/2*C=2.76*10^-6 J ( initial stored energy)
We also know that C=Q/V=221*10^-9/25 V=8.84*10^-9 F
When the separation between the plates is increased 3 times, the capacitanve decrease a factor 1/3 then the stored energy is:
U=Q^2/(2*C/3)= 3*Q^2/(2*C)=3*(221*10^-9)^2/2*8.84*10^-9=8.28*10^-6J ( final stored energy)
The change in the stored energy is : 8.28*10^-6J-2.76*10^-6 J=
=5.52 *10^-6 J