Tallest Lighthouses United States
Tallest Lighthouses united states
 |
No items matching your keywords were found.
Physics HELP REALLY NEEDED!?
Dennis Joyce of the United States threw a boomerang and caugt it at the same location 3 minutes later. Suppose Joyce decided to work out while waiting for the boomerang to return. If Joyce expended a 54 kJ of work, what was his average power output during the work out?
And The world's tallest light house is in Japan and is 106 meters tall. If a winch is used to raise 14 kg of equipment to the lighthouse top at a constant speed of 3.00 m/s, calculate the power developed by the winch.
1) Power = work/time
54kJ = 54000
3 min = 180s
54000/180 = 300 J/s or 300 Watts
2) 106/3 = 53.3 seconds to reach the top (time)
Work = Force x Distance
Work = [(14kg x 9.8(acceleration of gravity)] x [106m]
Work = 14543.2J
Power = Work/time
Power = 14543.2J/53.3s
Power = 272.86 J/s
 |
Cape Hatteras Light: The Tallest Lighthouse in the United States (Great Lighthouses of North America) List Price: $21.25 Sale Price: $18.91  |
 |
1926 Print Tallest United States Candle Lighthouse Cape Hatteras National Park - Original Halftone Print List Price: $36.95 |
|
This is an original 1926 halftone print of the tallest (at the time) lighthouse tower in the United States: Cape Hatteras in North Carolina. Photography courtesy of Clifton Adams. Please note that there is printing on the reverse. |
