Explain each step a crane on an oil rig in the north sea is lifting a 250tonne item of equipment from the deck of a barge. the barge is 45m long by 10m wide at the water line. how far must the crane lift the item before it is clear of the barge?

Which transition by an electron will release the greatest amount of energy? oa ob oc od

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

Which of the following statements correctly describes a transformer?