It is necessary to determine the specific heat of an unknown object. The mass of the object is measured to be 199.0 g
It is determined experimentally that it takes 16.0 J to raise the temperature 10.0°C. Find the specific heat of the object.
A) 8.04 J/kg ? K
B) 1600 J/kg ? K
C) 0.00120 J/kg ? K
D) 3.18 × 106 J/kg ? K
A
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Coulomb's Law: A particle of charge +2q is placed at the origin and particle of charge -q is placed on the x-axis at x = 2a. Where on the x-axis can a third positive charge be placed so that the net electric force on it is zero?
A. 3.4a B. 6.8a C. 8.6a D. 9.3a E. 1.0a
If we double only the spring constant of a vibrating ideal mass-and-spring system, the mechanical energy of the system
A) increases by a factor of . B) increases by a factor of 2. C) increases by a factor of 3. D) increases by a factor of 4. E) does not change.
Why is the innermost Galilean moon Io made mostly of rock while the outermost Galilean moon, Callisto made of a mixture of ice and rock?
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Charges of 3.5 µC and ?7.6 µC are placed at two corners of an equilateral triangle with sides of 0.1 m. At the third corner, what is the electric field magnitude created by these two charges? (ke = 8.99 × 10^9 N·m2/C2)
a. 1.2E+7 N/C b. 3.0E+6 N/C c. 5.5E+6 N/C d. 5.9E+6 N/C e. 7.9E+6 N/C