Physics 161 – Summer 2003 Homework 1
E. Gortcheva Due June 5, start of class
Read Serway & Beichner (S&B): app. B and chaps. 1, 3, 7.2, 11.2, and 2.
1. S&B 1.3
2. If ``jerk'' is defined as
where x has dimensions of [L] and t has dimensions of [T], what are the dimensions of j?
3. In the equation
g has dimensions of [L/T2] and R has dimensions of [L].
(a) What are the dimensions of ?
(b) What are the dimensions of v?
(c)What are the dimensions of ?
4. You are given the equation
where m has dimensions of [M], g has dimensions of [L/T2], and vt has dimensions of [L/T]. What are the dimensions of b?
5. S&B 1.20
6. S&B 1.28
7. S&B 1.40
8. Carol has a mass of 65 kg. Assume that a typical cell is a sphere with a diameter of 10 m and a density of 1 g/cm3, and that 80% of Carol's mass is in her cells. Make an order-of-magnitude estimate of the number of cells in Carol's body.
9. S&B 1.48
10. S&B 1.52