A candle is kept at 40 cm from a screen. A lens was placed between screen and candle to get real image magnified twice. What was the focal length of lens? a:6
b:12
c:9
d:5

Which changes of state do the labels represent? a: b: c:

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)