Vector A pains due north and has a magnitude of A. Vector B pains due east and has a magnitude of E. What is the magnitude ofA x B? O 0 0 13,300 0 5,6?0 Multiple forces act on a uniform solid disk with a mass of 3.31 kg and a radius of 1?.8 cm that can rotate about an axis that runs through the center of the disk perpendicular to the plane ofthe disk. The disk is initially at rest, but accelerates at a rate of 6.5? radfs2 due to the torques generated on it by the forces. (a) What is the moment of inertia for the disk? 0 0.105 kg*m2 0 0.0524 kg*m2 O 1.050 kg*m2 O 524 kg*m2 (b) What is the net torque exerted on the disk by the forces? O 0.345 N*m O 0.689 N*m 0 0.00?98 N*m 0 0.0160 N*m Water vapor with a temperature of 'I 00 C gives up 8?.9 k] of energy as heat. How much ofthe water vapor condenses back into water? 0 21.0 kg 0 0.0210 kg 0 0.0390 kg 0 00000390 kg 0 0.000263 kg 0 0.253 kg A bar that can rotate about its center is initially oriented vertically. 9% force with a magnitude of 1 35 N acts at a point 43.1 cm awayI from the center of the bar. Ifthe force makes an angle of 32.5\" with the horizontal as shown in the gurer what is the moment arm of the force? 0 0.895 n1 0 0.570 n1 0 0.406n'l O 0.258 m Multiple forces act on a hoop with a mass of 80? g and a radius of 59.9 cm that can rotate about an axis that runs through the center ofthe hoop perpendicular to the plane of the hoop. The hoop is initially at rest, but accelerates at a rate of 'I 6.2 radi's2 due to the torques generated by the forces. What is the net torque generated on the hoop by the forces? 046,900,000 N*m 0 2,350 N'*m 04.69 N*m 046,900 N*m It takes -6.73 kJ of energy to cool an unknown substance from an initial temperature of 13.3 C to 41.30 C. If the substance has a mass of 0.738 kg, what is its specific heat value in units of J/kg K? O 686 ]/kg K O 221 J/kg K O 326 ]/kg K O-686 ]/kg K O-221 }/kg K O-326 ]/kg KA long, thin rod is aligned horizontally and pinned so that it can rotate about a pivot located at the center of the rod. Three identical forces, all pointing downward] also act on the rod, 131 at the left end, pg one-quarter ofthe length of the rod from the left end, and P; at the center ofthe rod. In which direction does the torque generated by force 131 point? 0 The torque generated about the pivot points into the page. 0 The force does not generate a torque about the pivot. O The torque generated about the pivot points out of the page. \fA silver block has a mass of 0.514 kg and is initially at a temperature of 117 C. How much energy must be transferred to the block as heat for it to reach a nal temperature of 44.1 :C? Use [silver =235 Jfkg-K for the specic heat value of silver. 05,330] 0 3,190] 03,190] 02,140] 05,330] 02,140] A bar that can rotate about its center is initially oriented vertically. A force with a magnitude of 149 N acts at a point 41 .4- cm awayI from the center of the bar. lfthe force makes an angle of 26.1" with the horizontal as shown in the gurer what is the angle between the position and force vectors which can be used to- calculate the torque generated by the force? 053.9\" 026.1\" C3116D 0154\" A long, thin rod is pinned so that it can rotate about its center. A force with a magnitude of 7'22 N acts a distance d = 16.4 cm from the center of the red, as shown in the gure below. If the force generates a 3.56 N-m torque on the rod] what is the angle 8 that the force makes with the run? 00.1?3' 0115" O?2.5 01.40\"