2. (1 point) An archer pulls back a 500 g arrow on a bowstring using an average force of 210 N to draw the string back 30 cm. If there is no friction, with what speed will the arrow leave the bow when it is released. A. 5.0 m/s B. 0.50 m/s C. 160 m/s D. 16 m/s 3. (1 point) An object released from a height h strikes the ground with a velocity v. If the same object is now released from a height 2h, with what velocity will it hit the ground? The effects of air resistance can be neglected. A . 1 2 B. V20 C. 2v D. 4v7. (1 point) The graph below shows the temperature of a solid with a melting point of 35.C. A 2.0 kg sample of the solid is heated at a constant rate. What is the specific heat capacity of the solid? 50 45- 40 35 Temperature ("C) 15,000 30,000 45,000 60,000 75,000 90,000 105,000 120,000 Energy (J) A. 1.5 x 104 Jkg-1. C-1 B. 1.5 x 103 Jkg 1. C-1 C. 7.5 x 103 J kg-1. C-1 D. 7.5 x 102 Jkg-1. C-1 8. (1 point) What type of decay is represented by the general nuclear reaction below? EX -2_1 Ytie+ve A. Positron Emission (B+ Decay) B. Electron Capture C. Electron Emission (8- Decay) D. Gamma Decay9. (1 point) In the fission reaction shown below, what is the value of x? 92 235 U to n - 92 7 36 Kr +56 1 141 Ba + con A. 1 B. 2 C. 3 D. 4