# Neutron star-universal gravitational problem

Hi, i'm having problem w/ this question...i've tried everything i know and i still don't get the right answer...here's the info they give:

Consider a neutron star of mass M = 1.99e+30kg and a radius of R = 10 km.

They ask 3 question...two of which i have answered (1st:gravitional acceleration near the surface of the star, i found to be 1.33e12 m/s/s and 2nd: found the velocity of an object if it was 1.1 m away from the surface of the star to be 1.71e6 m/s.) but the question that i haven't been able to answer is this: Assuming uniform density, how much would 1.1 cubic centimeters of neutron star material weigh on the surface of the earth?

HELP!!!....i got this far..desity of the star w/ radius 10 km..1.99e+30kg/4.19e12 (meters cubed) = x (kg)/1e-6 (meters cubed) and then the answer from that i multiplied by 9.81...but that's not the right answer...what am i doing wrong??

sorry i finally found the answer...i just made some errors in the unit conversion

1. 👍 0
2. 👎 0
3. 👁 263

## Similar Questions

1. ### Physics

1. Question: Consider two planets with uniform mass distributions. The mass density and the radius of planet 1 are p1 and R1, respectively, and those of planet 2 are p2 and R2. What is the ratio of their masses? Ans: M1/M2 =

asked by Neha on August 28, 2011
2. ### GENERAL CHEMISTRY

CALCULATE THE pH AND HYDROLYSIS IN 0.10 M AlCl3 SOLUTION.Ka = 1.2 X 10-5 FOR [Al(OH2)6]+3,OFTEN ABBREVIATED Al+3.TELL WHETHER pH IS ACID OR BASE.GIVE IONIC EQUATION. Help us a little by telling us how much you know to do and

asked by SHAWN on July 29, 2007
3. ### help me for this stupid worksheet

the question is.. why did the ghost decide to haunt city hall? urgh i don't fee like doing it so im hoping someone has the answer :] You might have gotten an answer if you'd told us the source of your question. To which story,

asked by brooke on January 31, 2007
4. ### Math

if x is an even number, what is the quotient of the next greater even number divided by the next greater odd number? i have no idea where to even start with this problem. i would really appriciate some help. Thanks! What can make

asked by Marie on February 25, 2007
1. ### Physics

The question is: A small block of ice at 0oC is subjected to 10 g of 100oC steam and melts completely. Show that the mass of the block of ice can be no more than 80 g. There were no equations in my chapter to use for this question

asked by Mary on September 23, 2009
2. ### College Algebra Word Problem

I have been racking my head with this one and don't know how to approach it. The question is: A bank loaned out \$64,000, part of it at the rate of 13% per year and the rest at a rate of 5% per year. If the interest received was

asked by Marlon on September 23, 2008
3. ### chemistry

This question I really don't get it. I tried tried tried to figure out how to start solve the problem but still couldn't figure out. So can you help me with one question PLEASE? If so, can you please explain to me how you get the

asked by Laura on June 14, 2012
4. ### Pre-Calculus

The question is "Find parametric equations for the line with the given properties: Slope -2, passing through (-10, -20)." I don't even know where to begin, or what to do. Please help! This is an example problem, not the main

asked by James on January 25, 2016
1. ### College Algebra

Can we try this again? I already posted this question and thank you for responding but I just don't understand. I am posting it again because I need to clarify that I have formulas my professor has us use but since I've never come

asked by Meredith on April 18, 2010
2. ### Study skills

This isn't really a question, but I'm wondering how I can manage my time... I have a lot of homework and I don't know how to complete it all... I have tutoring on weekdays and don't usually get to finish all my homework. ( I

asked by Ashley on February 29, 2020
3. ### math

A large bag of sugar weighs 7 1/2 pounds. How much does 1 1/4 bags of sugar weigh? I really need help with this question. the first problem is that I don't know what operation to use and second I don't understand the main problem

asked by abigail pope on January 7, 2015
4. ### Calculus

I don't understand how to get q for this problem? The next steps for the problem, you just need to plug q in, but I'm not sure what to do? Do you set revenues equal to expenses? Problem: Revenue is given by R(q) = 750q and cost is

asked by Mona on November 10, 2016