... 0.11 m s–1B 0 .22 m s–1C 0.40 m s–1D 0.80 m s–1Turn over for the next questionπ 2 mrT 2 π 2 mr 2 T 2 2π 2 mr 2 T 2 2 mr 2 T 2 WMP/Jun10 /PHYA4/ 147 Which graph, A to D, shows the variation ... changed.Which row, A to D, in the table would give a simple pendulum with a time period twice that ofthe spring oscillations?new pendulum length new mass on springA 2l 2MB 2lC 2MDM 2 M 2 l 2 l 2 Ek0AxEk0CxEk0BxEk0Dx5Turn ... recharged?A 10 sB 100 sC 20 0 sD 1000 sTurn over ᮣWMP/Jun10 /PHYA4/ 1Q 2 2πε0aQ 2 ε0aQ 2 ε0aQ4πε0aP2a2a–Q+Q+Q+QWMP/Jun10 /PHYA4/ 1817 When switch S in the circuit is closed,...