A0.080kg robin, perched on a power line 6 m above the ground , swoops down to snatch a worm from the ground and then returns to an 8 m high tree beach with his catch. by how much did the birds pe increase in his trip from the power line to the branch?

Which type of electromagnetic waves are dangerous enough to be used to kill cancerous cells? (a)gamma rays (b)visible light (c)infrared light (d)microwaves

Which notation is used to represent an alpha particle? a. b. c. d.

Asatellite component is in the shape of a cube with 10cm edges, has an evenly distributed mass of 2 kg and one bolt hole at each of four corners. if the maximum predicted random vibration environment is 10 grms, what bolt size would be a good choice for restraint? what other factors might drive bolt size besides force/stress?