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1. ### Four stars with equal masses m=1.99×1030 kg are located at the corners of a square?

M = 1.99•10^30 kg L = 4.64•10^16 m G = 6.674•10^-11 ...there's no need for any 'origin' to frame the problem; it sure does help when you're trying to work out the answer, though! ...

1 Answers · Science & Mathematics · 03/12/2012

2. ### A 1.99 kg book slides 1.09m along a level surface. coefficient of kinetic friction(b/w book and surface)=0.128?

work done = force x distance mg = 1.99 x 9.8 = 19.502 N 19.502 x 0.128 = force required to overcome friction = 2.5 N (rounded) 0 - 2.5 = -2.5 N (force of friction) -2.5 x 1.09 = -2.725 J (answer)

2 Answers · Science & Mathematics · 19/03/2011

3. ### Calculate the orbital period of Neptune (in yr) from knowledge of G, the mass of the sun (M = 1.99×1030 kg)?

What formula did you use? In simplest form, Kepler's Third Law for objects in orbit around 1 solar mass, T in years, R in AU, then T^2 = ...

3 Answers · Science & Mathematics · 04/03/2014

4. ### 98.02 pJ energy is stored in a 1.99 cm × 1.99 cm × 1.99 cm region of uniform electric field. What is the?

...hate it with a PASSION. **Do sig figs matter? Lol The equation? Energy / volume = (1/2)(epsilon)E^2 ? ...IDK, just...get it to regular Joules) 1.99 cm changes to .0199 m (98.02...

2 Answers · Science & Mathematics · 11/09/2010

5. ### Can someone please explain Log reductions and how they can be calculated?

Could you specify a subset of the universe of knowlege here? Is this petroleum well log reduction, GPS log reduction, etc.? Please, if you want help, you've got to help a bit yourself.

1 Answers · Science & Mathematics · 10/07/2010

6. ### A 3.21 kg object is attached to a 1.99 m long string and swung in a vertical circle at a constant speed of 10.7 m/s.?

...mg = mv²/r => T = m(v²/r - g) = 3.21(10.7²/1.99 - 9.81) = 3.21*47.723 = 153.19 N also at loop low: T - mg = mv²...

2 Answers · Science & Mathematics · 22/05/2015

7. ### Does .9 repeating equal 1?

...39;ve seen made by people who do believe that 0.9 recurring does in fact exactly equal 1. 1st Argument 0.33... = 1/3 Therefore 0.99... = 3/3 = 1 2nd Argument 0.99... = 0.9 + 0.09 + 0.009... ...

8 Answers · Science & Mathematics · 27/12/2012

8. ### How much energy does it take accelerate when 1 KG of mass to 99% of the speed of light?

...v/c)² )] – 1 } KE = ( 1 kg )( 3 × 10^8 m/s )²{ [ 1 / √( 1 – (0.99)² )] – 1 } KE = 9 × 10^16 Joules { 7.0888 – 1 } KE...

3 Answers · Science & Mathematics · 08/07/2011

9. ### A door of width 1.07 m and height 1.99 m weighs 286 N and is supported by two hinges, one 0.600 m from the to?

If you did not specify that each hinge supports half of the doors... your supposition K = M and each will be = ½W ∑Fv = 0 0 = K + B - 286N...

2 Answers · Science & Mathematics · 31/07/2009

10. ### what does ten to the 99 years mean?

1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,00,000,000,000,000,000,000,000,000,000,000 its ten with 99 zeros after it, that many years bro.

3 Answers · Science & Mathematics · 20/03/2011