{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# 645xlo 27 kg find the energy released in this

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: . is converted to energy, according to Einstein's equation: E = b.me? = (2x3.344 - 6.645) x10-27 kgx(3x 108 mjs)2 = 3.87x10-12 J. n hue it crosses the sticky patch, the bug loses AcE = Wnc = -P,kmg (1.5 cm). The initial ibfthe bug is Eo = mg(ll em) (measured above' ,ttom). Since Eo/ ILlEI = (11 cm)/(0.61) x Ii )= 12.02, the bug wUljust barely complete crossings. . Problem 63. A hypothetical power plant converts matter entirely into electrical energy. Each year, a worker at the plant buys a box of I-g raisins, and each day drops one raisin into the plant's energy conversion unit. Estimate the average power output of the plant, and compare with a 500-MW coal-burning plant that consumes a lOD-car trainload of coal every 3 days. Solution The energy equivalent of 1 g of mass is me?, so the power generated in one day is (10-3 kg) x (3x 108 m/s)2/(86,400 s) = 1.04 GW, or approximately twice the output of a 50D-MW coal-burning plant. Thus, the mass-energy of one raisin is equivalent to the chemical energy (times the .overall e...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online