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Use the Hubble law, the apparent visual magnitude of +12.9 and the observed redshift z = 0.158 to estimate the absolute magnitude of the quasar 3C 273 (which is the brightest quasar known). Compare the luminosity of 3C 273 with that of the Andromeda Galaxy (M31), the Sun, and the giant elliptical galaxy M87. Are your results consistent with the statement in this chapter that a luminous quasar has typically 1000 times greater luminosity than a large normal galaxy?
a 70 kg hockey player sliding freely on his knees on horizontal icy surface with velocity m/s. find the velocity of the player after he catches the puck
guess the force between a proton and an electron at the Bohr radius of 0.5Å (1 Å=10-10 m). The magnitude of the charge of an electron, as well as a proton, is 1.6·10-19 C.
What is the value of g at the location of this satellite. Discover the altitude of the satellite in meters.
A 2.2 A current is flowing in a 18 H inductor. A switch is opened, interrupting the current in 2.0 ms. Find the induced emf in the inductor
A glass vial filled with mercury vapor (4.88 eV between ground state and first excited state), is placed between the cathode and anode of a photoelectric effect apparatus. Assume that the glass is so thin that it will not reduce the energy of phot..
A parallel-plate capacitor with plates of area 441 cm2 is charged to a potential difference V and is then disconnected from the voltage source. When the plates are moved 5.02 mm farther apart, the voltage between the plates increases by 81.0 Volts. W..
A rocket which has an exhaust speed of 8.0 km/s is to have a lift-off vertical acceleration of 8.0 m/s2 from the NASA launch pad. at what minimum rate must the rocket consume fuel
two students stand poised to leap off a high dive structure into teh swimming pool below. Student B is twice as massive as student A. Find the magnitude of velocity of canoe relative to river.
You have landed on an unknown planet, Newtonia, and want to know what objects will weigh there. What would it weigh on Earth
The electric field at a distance o f0.145m from the surface of a solid insulating sphere with radius 0.355m is 1750 N/C. Calculate the electric field inside the sphere at a distance of 0.200m from the center
A bicycle wheel is rotating at 45 when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.42.
A sealed container has a volume of 0.0030m^3 and contains 30 g of molecular nitrogen which as a mass of 28u. What is the pressure of nitrogen gas
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