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23 A 1,000 kg car whose speed is 80 km/h has a kinetic energy of * (2 Points) ( 2.47 x 10^5 J 2.52 x 10^4 J O 3.20 x 10^6 J 2.42 x 10^6J 24 A simple pendulum, consisting of mass m, is attached to the end of a 1.5m length of string. If the mass is held horizontal and then released from rest, its speed at the bottom is * (2 Points) 9.8m/s 4.4m/s 5.4m/s 17m/25 Which units can be combined together as another way to express work? * (2 Points) O newton/meter O newton x second ()newton x meter () newtons x second x meter 26 Two resistors, R1 and R2 are connected in parallel. If their equivalent resistance is 0.040 and R2 = 0.20, what is the resistance of R1? * (2 Points) 0.16 ohm 6.0 ohms 0.05 ohm O 0.02 ohm2? Two wires of the same material and with the same length have different diameters. Wire A has twice the diameter of wire B. If the resistance of wire Bis R. what is the resistance of wire A? * (2 Points} 0 R 0 Re 0 2R 0 RM I'U CID Kirchhoff's First Law says that: * {2 Points} 0 Wires need insulation to stop electrons from leaking out of the wire 0 Voltage loses strength as it flows about a circuit. 0 Total current owing into a point is the same as the current flowing out of that point. 0 Current loses strength as it flows about a circuit. 29 The charge of body A is half as much as that of body B. Compared to the force on body B, the force on body A is * (2 Points) half as much the same four times as much O twice as much 30 The ratio of the potential difference to the resulting current is * (2 Points) O resistance resistivity electric field O voltage31 A point charge of -9nC is on the x-axis at x = 4m. The magnitude of the electric field on the x- axis at x = -3m is * (2 Points) 1.0 N/C 0.56N/C O 1.29 N/C O 1.65 N/C 32 The condition or state in wherein a body is at rest or is moving in uniform motion. *(2 Points) force O resultant torque equilibrium