Kirchhoff's Rules: In the circuit shown in the figure, R1 = R2 = 90.0 ?, R3 = R4 = 20.0 ?, V1 = 7.0 V, V2 = 8.0 V, and the batteries are both ideal. What current does the ammeter read?
A. 0.40 A
B. 0.050 A
C. 0.83 A
D. 0.056 A
Answer: A
Physics & Space Science
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Addition by Components: Vector 
has magnitude 2 units and is directed to the north. Vector 
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- 
.
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When two light atoms fuse together, mass
A) converts to kinetic energy. B) converts to high-energy gamma radiation. C) is created from energy of other forms. D) is gained.
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The positively charged particle inside an atom is the nucleus
a. True b. False Indicate whether the statement is true or false
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What is the molecular formula for benzene?
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