A star has an apparent visual magnitude of +19 . Which will you need to see this star?
a. naked eye b. binoculars
c. telescope like Hubble Space Telescope d. All of the other choices can be used.
c
You might also like to view...
In an adiabatic free expansion
a. no heat is transferred between a system and its surroundings. b. the pressure remains constant. c. the temperature remains constant. d. the volume remains constant. e. the process is reversible.
Two identical objects are released from rest from heights R and 2R above the surface of the Earth. After traveling a distance R/2, which object has the larger speed?
How much heat is required to change 456 g of ice at -25.0°C into water at 25.0°C? The specific heat of ice is 2090 J/(kg K) and the latent heat of fusion of water is 33.5 × 104 J/kg
A) 224 kJ B) 153 kJ C) 112 kJ D) 71.5 kJ E) 72.5 kJ
The magnetic quantum number can have any integer value ranging from
A) -n to +n. B) -? to +?. C) 0 to n. D) 0 to ?. E) ? to 2? + 1.