Answer:
Length required will be 0.004 m
Explanation:
We have given efficiency of the reinforcement
We have to find the length required for the reinforcement
x is given x = 0.74 mm =
x represent length of the fiber at each end
We know that efficiency is given by
So
l= 0.004 m
The load is the weight of the rock that Jonathan lifts:
The effort instead is the force applied in input to the lever in order to lift the rock:
So, the ratio between load and effort for this exercise is
So, the ratio is 10:1.
The answer is d (electric magnetic fields)
Refer to the diagram shown below.
The input force of 20 N should use the effect of the lever to lift the weight W on the other side of the fulcrum. Therefore the output force is equal to the weight lifted.
Moment balance about the fulcrum yields
W*0.5 - Fin*2 = 0
Because the output force is equal to W,
Answer: The output force is 80 N
The options attached to the question are given below:
A. The substances that are formed.
B. The substances that are changed.
C. The starting materials.
D. The chemical ingredients
ANSWER
The correct option is C.
A chemical reaction is made up of two distinct parts, which are reactants and products. The reactants refers to the starting material of the chemical process, which react together under suitable conditions. The products on the other hand refers to the new substance that is formed as a result of the reaction of the reactants. The reactants are usually find at the left side of chemical equations while the product is found at the right.