Posted by Nisar on Sunday, August 28, 2005 at 12:10am.
I have a hard time solving this problem.
The weight of an object at the surface of a planet is proportional to the planet's mass and inversely proportional to the square of the radius of the planet. Jupiter's radius is 11 times Earth's and its mass is 320 times Earth's. An apple weighs 1.0 N on Earth. How much would it weigh on Jupiter?
wouldn't one multiply by 320(proportional to mass) and divide by 11 squared (inversely proportional to the square of distance)?
2.6N

Physics  Amber, Sunday, August 26, 2007 at 5:24pm
Yes I just had a problem like this too. You would multiply by 320 and divide by 11 squared. 2.6 N would be correct for 2 signifigant digits.

Physics  amy, Wednesday, September 5, 2007 at 9:34am
The weight of an object at the surface of a planet is proportional to the planet's mass and inversely proportional to the square of the radius of the planet. Jupiter's radius is 11 times Earth's and its mass is 320 times Earth's. An apple weighs 1.0 N on Earth. How much would it weigh on Jupiter?

Physics  amy, Wednesday, September 5, 2007 at 9:37am
In cleaning out the artery of a patient, a doctor increases the radius of the opening by a factor of two. By what factor does the crosssectional area of the artery change?

Physics  amy, Wednesday, September 5, 2007 at 9:39am
The average speed of a nitrogen molecule in air is proportional to the square root of the temperature in kelvins. If the average speed is 475 m/s on a warm summer day (temperature = 300.0 kelvins), what is the average speed on a cold winter day (250.0 kelvins)?

Physics  dgfs, Tuesday, September 7, 2010 at 6:32pm
gfd

Physics  sdsd, Thursday, November 18, 2010 at 3:50pm
asadad
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