A mass m, which is connected to a spring of spring constant k, is released from 2 = A to perform a simple harmonic motion. Another mass 2m, which is connected to another spring of the same
spring constant k, is also released from I= A to perform a simple harmonic motion. Compare the
values of total mechanical energy stored in these two spring-mass systems.

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd question 6 options: 3000 joules 30 joules 320 joules 3200 joules

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.