Chemical evolution concentrated the various smaller molecules into the more stable forms
Indicate whether the statement is true or false
T
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A parallel plate capacitor with circular plates having radius 0.07 m and a dielectric with constant 2.2. If it is desired to store 
J in this capacitor, what must the separation distance be for a voltage of 1.5 kV?
A. 2.8 cm B. 5.5 cm C. 1.3 cm D. 0.90 cm E. 1.4 cm
The ________ theory describes the origin of the planets as having been formed by accretion of small particles into progressively larger and larger bodies
Fill in the blank(s) with correct word
Two metal rods, one silver and the other copper, are both immersed at one end in a steam chamber at a temperature of 100°C. The other end of each one is in an ice water bath at 0°C
The rods are 5.0 cm long and have a square cross-section that is 2.0 cm on a side. No heat is exchanged between the rods and the surroundings, except at the ends. How much total heat flows through the two rods each minute? The thermal conductivity of silver is 417 W/m ? K, and that of copper is 395 W/m ? K. A) 20 kJ B) 39 kJ C) 47 kJ D) 49 kJ E) 11 kJ
A 4.0-cm tall object is placed 50.0 cm from a diverging lens having a focal length of magnitude 25.0 cm. What are the nature and location of the image? The image is
A) real, 1.3 cm tall, and 16.7 cm from the lens on the same side of the object. B) virtual, 1.3 cm tall, and 16.7 cm from the lens on the same side of the object. C) virtual, 4.0 cm tall, and 20 cm from the lens on the side opposite the object. D) real, 4.0 cm tall, and 20 cm from the lens on the side opposite the object. E) virtual, 2.0 cm tall, and 10 cm from the lens on the side opposite the object.