- 1. Use a ruler to draw the reflected images of the objects below. square 2. Were there any differences between the object and its image in the plane mirror? Describe any differences, with respect to (a) size __ (b) distance from the mirror __ (c) orientation
- Notez un autre exemple de melange homogène Expliquez pourquoi il est homogène.
- 5. The absolute magnitude of a star, M_(5) is related to its luminosity, L,by the formula M=4.72-log(L)/(L_(0)) , where L_(0) is the luminosity of the sun. The luminosity is the rate at which the star emits light, and is measured in watts. a) Determine the absolute magnitude of the sun. b) The absolute magnitude of Sirius, the star that,other than the sun.appears brightest from Earth, is 1.41 . Is Sirius more or less luminous than the sun?By what factor? c) Repeat part b)for Canopus the star that appears second brightest from Earth,which has an absolute magnitude of -4.7 d) A distant object called a quasar has a luminosity of about 10^38W The sun's luminosity is about 4times 10^26W Determine the absolute magnitude of the quasar.
- 5. The absolute magnitude of a star, M_(j) is (related to its luminosity, L by the formula M=4.72-log(L)/(L_(0)) , where L_(0) is the luminosity of the sun . The luminosity is the rate at which the star emits light, and is measured in watts. a)Determine M)=4.7z-109(2)/(2)=4.7z-[logL-log10] b) The absolute magnitude of Sirius, the star chrightest from
- 11. A 40X microscope has a field of view of 3.2mm. What would the field of view be at 400X to the nearest hundredth of a mm?
