Physics, 01.10.2021 07:20, khoadominh2206
Astronomers using the Hubble Space Telescope deduced the presence of an extremely massive core in the distant galaxy M87, so dense that it could be a black hole (from which no light escapes). They did this by measuring the speed of gas clouds orbiting the core to be 790 km/s at a distance of 60 light-years (=5.7×10ˆ17m) from the core.
a.)Deduce the mass of the core.
b.)compare it to the mass of out sun
Answers: 3
Physics, 22.06.2019 18:30, TheSpeedster
Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?
Answers: 1
Physics, 23.06.2019 02:10, Dallas6797
You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 3.00 ms . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?
Answers: 1
Astronomers using the Hubble Space Telescope deduced the presence of an extremely massive core in th...
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