1. Two boxes are connected by a string, as shown below. The string and pulley are massless, and m1+m
2. A 70 kg person stands on one end of a one-meter long board. The board is uniform and weighs 100 k
3. A thin uniform rod of mass M and length L is positioned vertically above an anchored frictionless
4. A disk with a radius of 2.0 m and a rotational inertia of 0.40 kg·m2rotates with an angular speed
6. An engine is designed to obtain energy from the temperature gradient of the ocean. What is the th
7. If 10 kg of ice at 0 oC is mixed with 100 kg of water at 80 oC and is additionally heated with 46
8. Some species of whales can dive to the depth of one kilometer. What is the approximate total pres
10. A current loop freely rotates in a uniform magnetic field (B = 0.50 T). The maximum torque on th
12. A 3 μF capacitor is connected in series with a 6 μF capacitor. When a 300 V potential difference
15. In X-ray spectrum, which of the following statements is correct?(A) The electron beam is acceler
31. As the figure shows, a stone was thrown on the roof of height h=10 m from the throw. After 6 sec
33. A 10 g bullet moving 1000 m/s strikes and passes through a 2.0 kg block initially at rest, as sh
34. A box of mass 1 kg was placed on the edge of a rotating table with radius 10 cm, as shown below.
35. A 10 N tangential force is applied at the edge of a 20 kg disk with a radius of 2.0 m. Then, the
36. A uniform beam of weight 300 N and length 3.0 m is suspended horizontally. On the left it is hin