One cubic meter (1.00 m) of aluminum has a mass of 2.70 X 10° kg, and the same volume of iron has a mass of 7.86 x 10° kg. Find the radius of a solid aluminum sphere that will balance a solid iron sphere of radius 2.00 cm on an equal-arm balance.

One cubic meter (1.00 m) of aluminum has a mass of 2.70 X 10° kg, and the same volume of iron has a mass of 7.86 x 10° kg. Find the radius of a solid aluminum sphere that will balance a solid iron sphere of radius 2.00 cm on an equal-arm balance.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter1: Introduction And Vectors

Section: Chapter Questions

Problem 13P

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Question

13. One cubic meter (1.00 m) of aluminum has a mass of
T 2.70 X 10° kg, and the same volume of iron has a mass of
7.86 X 10' kg. Find the radius of a solid aluminum sphere
that will balance a solid iron sphere of radius 2.00 cm on an
equal-arm balance.

20. How many significant figures are in the following numbers?
V (a) 78.9 ± 0.2 (b) 3.788 x 10° (c) 2.46 × 10- (d) 0.005 3
V
21. The tropical year, the time interval from one vernal equinox

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