Physics, 05.05.2020 04:21 dayanara72
The singularity at the center of a black hole is predicted to be a region of zero volume and infinite density that contains all of the black hole's mass. It is a point at which all currently known physical laws break down. Yet in a black hole, this "terrible point" is hidden from view behind an event horizon that prevents any knowledge about the singularity reaching the outside universe. Astronomers continue to spend considerable effort trying to understand the nature of these singularities, objects for which observational input, it would seem, will be forever lacking? Are these astronomers practicing science? Argue both yes and no. Which do you find convincing?
Answers: 1
Physics, 22.06.2019 03:00
According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?
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Physics, 22.06.2019 06:40
Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?
Answers: 2
Physics, 22.06.2019 12:50
The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.
Answers: 2
Physics, 22.06.2019 13:50
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.
Answers: 1
The singularity at the center of a black hole is predicted to be a region of zero volume and infinit...
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