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Module 2. Physics
A ram has a piston with 2 in2. Another ram with a piston of 4 in2 will provide
•  the same force.
•  double the force.
•  square the force.

•  Hi, I could do with some help on this question. I have not see this method of specifying a ram and piston combination. What is the difference between a "2 in2" and a "4 in2" piston, are the designations relating to piston and rod diameter? Thanks, Graeme.

Module 2. Physics
A cylinder filled with water to half a metre will exert a pressure of
•  4.9 Pa.
•  4900 Pa.
•  49 Pa.

•  Hi, can someone please explain?

Module 2. Physics
A spring, operating within its elastic range, shortens by 60mm when a load of 480N is applied to it. Calculate the total shortening when the load is increased by 120N
•  82mm.
•  45mm.
•  75mm.

•  Hi, can someone give me the formula to calculate this?

Module 1. Mathematics
(x + y)^2 / (x + y)^8 has a base and exponent of
•  (x + y)^10.
•  (x + y)^-6.
•  (x + y)^1/4

•  is this is nt worng question?