Archive for the ‘Physics’ Category
Thursday, January 21st, 2010
chika123 asked: the sears tower in chicago is 443 m tall. Suppose a book is dropped from the top of the buliding. What would be the book’s velocity at a point 221 m above the ground? Neglect air resistance.
could someone please show me how to find the answer?
Tags: Air Resistance, Sears Tower, Velocity
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Tuesday, December 29th, 2009
ryudoradragon asked: A single can of a regular soda, contains 150 calories that is equivalent to 6.28 x 105 J ( 1 Cal = 4186 J ) of energy. Using results from the previous question, calculate how many meters would that person ( 112.9 lb ) have to climb to convert all that energy into potential energy. Would that be enough energy to climb to the top of Sears Tower (442 m) in Chicago after drinking one can of a regular soda?
I got the height needed to convert all energy to be 1251m…
I’m thinking that one soda is enough, but I was wondering about energy released as heat and such… so is it enough?
Tags: Calories, Potential Energy, Sears Tower
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Sunday, December 27th, 2009
Cakk asked:
The building with the highest occupiable floor is currently theSears Tower in Chicago. The top floor of the Sears Tower is 110 stories (436 m) above street level, and the roof of the tower is 442 m above the street. Assume a golf ball is thrown downward from the roof of the Sears Tower. Neglecting air resistance, the golf ball lands on the pavement after 9.2 s.
Tags: Ball Lands, Sears Tower, Speed Ball
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Monday, December 7th, 2009
goodwifey asked:
a rock (m=9 kg) was launched and a large slingshot was used to launch horizontally from the top of the sears tower (h=1450 feet =442) toward Lake Michigan. You see that the rock land in the water 500 meters from the ground floor of the building. At what velocity was the rock launched ?
Tags: Lake Michigan, Launch, Velocity
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Sunday, November 1st, 2009
salil646 asked:
The Petronas Twin Towers in Malaysia and the Chicago Sears Tower have heights of about 452 meters and 443 meters, respectively. If objects were dropped from the top of each, what would be the difference in time it takes the objects to reach the ground?
Tags: Chicago Sears Tower, Physics, Sears Tower
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Thursday, August 27th, 2009
PhysicsGirl asked:
Relative to the ground, what is the gravitational potential energy of a 55kg person on top of the Sears Tower in Chicago (443m high)
Tags: Gravitational Potential Energy, Sears Tower, Sears Tower In Chicago
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Tuesday, June 23rd, 2009
??JonasJay?? asked:
The Sears Tower in Chicago is 443 meters tall. Suppose a book is dropped from the top of the building. What would be the book’s speed at a point 220 meters above the ground? Neglect air resistance. Please answer ASAP. Thanks a ton!
Tags: Air Resistance, Answer Asap, Sears Tower
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Monday, May 25th, 2009
apriljtr62674 asked:
A single can of a regular soda, contains 150 calories that is equivalent to 6.28 x 105 J ( 1 Cal = 4186 J ) of energy. Using results from the previous question, calculate how many meters would that person ( 160.4 lb ) have to climb to convert all that energy into potential energy. Would that be enough energy to climb to the top of Sears Tower (442 m) in Chicago after drinking one can of a regular soda?
Tags: Calories, Potential Energy, Soda
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Monday, March 9th, 2009
i_xcelr8 asked:
remember the potato clock. you stick 2 probes into a potato and magically the clock gets power. why not apply the same concept on a much larger scale!! if we can manufacture 2 gigantic rods say 700 times larger and wider than the sears tower and smash one deep into earths eastern hemisphere and the other into the western hemisphere we should get enough electrictity from that to power the entire world. is this theory possible?
Tags: Entire World, Sears Tower, Western Hemisphere
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Sunday, September 21st, 2008
whoIsIt asked: The problem statement, all variables and given/known data
A sensitive gravimeter is carried to the top of Chicago’s Sears Tower, where its reading for the acceleration of gravity is 0.00136 m/s^2 lower than at street level.
Find the height of the building.
please with detail
Tags: Acceleration Of Gravity, Gravimeter, S Sears
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