The stars of highest photospheric temperature are those of spectral class ______________
Fill in the blank(s) with correct word
O
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Briefly explain how dark matter affects the expansion rate of the universe and the significance of the term critical density in the absence of any mysterious repulsive force
What will be an ideal response?
A single slit, which is 0.0500 mm wide, is illuminated by light of 550. nm wavelength. What is the angular separation between the first two minima on either side of the central maximum?
What will be an ideal response?
Describe changes in atomic structure that accompany the making of neutron star
What will be an ideal response?
A transformer for charging a power tool steps the line voltage down to 2.9 V. The output current of this transformer is 240 mA. If the transformer is ideal (100% efficient), what is the input current?
A) 9.9 A B) 110 mA C) 240 mA D) 0.70 A E) 5.8 mA