Thursday
December 5, 2013

# Posts by ray

Total # Posts: 353

physics
The force of gravity between two people is 4.9 x 10-13 Newtons. Person 1 has a mass of 61.3 kilograms, and person 2 has a mass of 93.5 kilograms. The value of G is 6.67 x 10-11 m3/s2 kg. How far apart are they from each other?

physics
a dike in Holland springs a leak through a hole of area 1cm squared at a depth of 2m below the water surface. How much force must a boy apply to the hole with his thumb to stop the leak? can he do it?

physics
Hey Lijia. I'm well aware that you most likely will never see this, but you're a moron.

Physics
Thanks so much! I should have thought of the pythagorean therom, but why x^2=70^2-55^2 rather than x^2+(-55^2)=70^2?

Physics
You are given a vector in the xy plane that has a magnitude of 70.0 units and a y component of -55.0 units. What are the two possibilites for its x component? Please explain, thanks! :)

physics
using the kinematic equation: displacement=initial velocity*time+ .5(acceleration*time^2) delta x= 0*7.8+.5(2.3*7.8^2) delta x= .5(2.3*7.8^2) delta x= .5(2.3*60.84) delta x= 69.966 m with sig figs your answer would be 70 m hope this helps!

Statistics
consider a football team whom the numbers on active players' jersey are 29,41, 50, 58, 79,..., 10 (listed in alphabetical order of the players' names) Does it make sense to calculate the mean of those numbers? why or why not?

American History
what factors led to the failure of Republicans to secure rights for freedmen in the South in the years between 1865 and 1877

math
if i bought a car for \$18,500 and price was 35% off what was original price and how do I do the math

math
if i bought a car for \$18,500 and price was 35% off what was original price and how do I do the math

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