Answer:

Explanation:
The statements are logically equivalent if they have the same truth tables. So let´s use truth tables in order to determine if they are logically equivalent or not:
The picture that I attached you shows the truth table for each case. As you can see in the highlight columns:

They are logically equivalent because they have exactly the same truth values between each other. Hence, we can conclude that they are logically equivalent.
If the load weighs 350 N, the effort that is required to lift the weight is 70 N
To answer the question, we need to know what mechanical advantage is.
<h3>What is mechanical advantage?</h3>
The mechanical advantage of the hydraulic lift M.A = L/E where
<h3>Effort required to lift the weight</h3>
Making E subject of the formula, we have
E = L/M.A
Given that
substituting the values of the variables into the equation, we have
E = L/M.A
E = 350 N/5
E = 70 N
So, the effort that is required to lift the weight is 70 N
Learn more about mechanical advantage here:
brainly.com/question/26440561
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Comparison operators are used to compare between objects!
are they equal? is one greater than the other?
if (a == b) ++a;
if (a > b) a = b;
for example when we use a sort function, comparison operators are used inside the function.