Recent content by disneygirl828

Yes i used that equation, should I have used something different? If so what?

Homework Statement Giraffes have long necks, creating different pressures between their heads and hearts. Giraffes have evolved to deal with this difference. If the distance between a giraffe''s head and heart is 1.95m and its blood has a density of 1.05kg/m^3, what is the difference in...

Thank you SO much :)

so the volume of the displaced water would be 15450kg? How do you convert kg*m/s^2 to Newtons?

Homework Statement A boat full of people lazily drifts along in Lake Superior. The boat has a mass, including people of 15,450kg. A. What is the buoyant force? B. What is the volume of the displaced liquid in cubic meters? The Attempt at a Solution A. Fb=mg Fb=? m=15,450kg g=...

Homework Statement I have a twin brother, and we're 30 years old. If i travel for three years at 2.55 X 10^8m/s (0.85c) while my brother is a rest on Earth, how much older than me will my brother be upon my return?Homework Equations t=To/√1-v^2/c^2 [b]3. Try to work out To=3 T=? V= 2.55 X...