The larger pulsating stars have a shorter pulsation period and higher luminosity.
Answer the following statement true (T) or false (F)
False
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Why does the present method of finding extrasolar planets not favor finding solar systems like ours?
What will be an ideal response?
A copper cylinder with a mass of 125 g and temperature of 345°C is cooled by dropping it into a glass beaker containing 565 g of water initially at 20.0°C. The mass of the beaker is 50.0 g and the specific heat of the glass is 840 J/kg?K
What is the final equilibrium temperature of the system, assuming the cooling takes place very quickly, so that no energy is lost to the air? The specific heat of copper is 385 J/kg?K and that of water is 4190 J/kg?K.
Which of the following is not the name of a major
lithospheric plate? a) African Plate b) North American Plate c) Japanese Plate d) Indian Plate
A wire (mass = 50 g, length = 40 cm) is suspended horizontally by two vertical wires which conduct a current I = 8.0 A, as shown in the figure. The magnetic field in the region is into the paper and has a magnitude of 60 mT. What is the tension in either wire?
a.
0.15 N
b.
0.68 N
c.
0.30 N
d.
0.34 N
e.
0.10 N