Show that the equation for converging lens of power p should result in a straight line graph with gradient 1 and y intercept p if 1/v is plotted on the y axis for a range of values of 1/u on the x axis

If you mix chlorine lithium in nickel together which two elements would be the most reactive

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.