Which of the observations below provide support for the big bang theory?

1 answer:

4 0

The answer to this question would probably be "D. The same background radiation was observed coming from all directions of space."

The background radiation here is referring to the Cosmic Microwave Background Radiation, one of the observational evidences of the Big Bang Theory which was discovered by Penzias and Wilson as they were doing some observations with a microwave receiver.

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what does 1N equal? It happens to be one of the questions on my "Newton's Laws of Motion Exercises" paper.

san4es73 [151]

1 Newton is equal to the amount of force required to accelerate an object at a rate of 1 metre per second, every second. One newton is the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in direction of the applied force.

8 0

4 years ago

Ammonia enters the compressor of an industrial refrigeration plant at 2 bar, −10°C with a mass flow rate of 15 kg/min and is com

Juli2301 [7.4K]

Answer:

a) W=85.225 kW

b) $0.02\frac{kW}{K}$

Explanation:

First, consider the energy balance for the compressor: The energy that enters to the system (W and enthalpy of the feed flow) is equal to the energy that goes out from it (Heat Q and enthalpy of the exit flow):

$W+m*h_1=Q+m*h_2\\W=Q+m*(h_2-h_1)$

Consider the enthalpy data from van Wylen 6th edition, Table B.2.2. According to that, $h_1=h(200kPa,-10C)=1440.6\frac{kJ}{kgK}$ , $h_2=h(1200kPa,140C)=1757.5\frac{kJ}{kgK}$