engineering thermodynamics questions?

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Here you find the all questions.

Hi,

Here you find the all questions.

1. Determine the local acceleration of gravity (in ft/s2) of a person whose mass in 150 lbm and whose weight is 144.4 lbf.

2.
A spring compresses in length by 0.14 in for every 1 lbf of applied
force. Determine the mass of an object, in lbm, that causes a spring
deflection of 1.8 in. The local acceleration due to gravity = 31 ft/s2.

3. Use unity conversion ratios to perform the following conversions. You must show all your work to receive credit:

(a) 50 km/hr to ft/s

(b) 55 m3/hr to ft3/s

(c) 304 kPa to lbf/in2.

4.
As shown below, A hydraulic lift is to be used to lift a 2500 kg weight
by putting a weight of 25 kg on a piston of diameter 10 cm. Determine
the diameter of the piston on which the weight is to be placed.

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