6. A block of mass m = 0.6 kg is attached to a vertical spring (k = 0.1 N/m) via a string over a pulley (I = 1/2 MR², M = 2 kg, R = 0.1 m). The string does not slip. What is the angular frequency of small oscillations? (A) 0.10 rad/s (B) 0.20 rad/s (C) 0.25 rad/s (D) 0.32 rad/s (E) 0.50 rad/s

11.Two rods of different metals are in contact as shown in the figure. The left end of the Cu rod is in contact with a hot reservoir at 500 K and the right end of the Ag rod is in contact 0.2 m with a cold reservoir at 150 K. The thermal conductivity for Cu and Ag are 400 W/m-K and 300 W/m-K, respectively. The length of each metal is 0.2 m and the cross section of the metal rods is 0.001 m². After a while, the temperature everywhere no longer changes with time. What is the temperature at the interface of Cu and Au? (A) 325 K (B) 328.57 K (C) 345. 68 K (D) 350 К (E)366.67 Κ

6. A block of mass m = 0.6 kg is attached to a vertical spring (k = 0.1 N/m) via a string over a pulley (I = 1/2 MR², M = 2 kg, R = 0.1 m). The string does not slip. What is the angular frequency of small oscillations?

(A) 0.10 rad/s
(B) 0.20 rad/s
(C) 0.25 rad/s
(D) 0.32 rad/s
(E) 0.50 rad/s

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