Work: A stone with a mass of 1.0 kg is tied to the end of a light string which keeps it moving in a circle with a constant speed of 4.0 m/s on a perfectly smooth horizontal tabletop. The radius of the path is 0.60 m. How much work does the tension in the string do on the stone as it makes one-half of a complete circle?
A. 100 J
B. 3.8 J
C. 0 J
D. 40 J
E. 80 J
Answer: C
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Answer the following statement true (T) or false (F)
A parallel plate capacitor of capacitance C0 has plates of area A with separation d between them. When it is connected to a battery of voltage V0, it has charge of magnitude Q0 on its plates. While it is connected to the battery the space between the plates is filled with a material of dielectric constant 3. After the dielectric is added, the magnitude of the charge on the plates and the potential difference between them are what?
A.
Q0, 
V0B.
V0C.
D.
E.
The lunar highlands have more craters than the maria because ________.
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Adams and Leverrier predicted the position of ________, which Galle confirmed
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