The scalar product between two 3-vectors can be written ab= ab cos ab, where a and b are the magnitudes of the vectors and eab is the angle between them. show that an analogous formula holds for two timelike 4-vectors a, b: a b= -ab cosh (abs (2) where a = (-a. a)1/, b = (-6. b)/2 and vab = tanh oab, for vab being the lorentz boost between the frame in which an observer whose worldline points along a is at rest and the frame for which an observer whose worldline points along b is at rest.

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.

What is the rate of change in a objects position?

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.