Question

1. how many significant figures do each of the following numbers have: (a) 214, (b) 81.60, (c)7.03, (d) 0.03, (e) 0.0086, (f)3236 and (g) 8700?

2. write the following numbers in powers of tenth notation: (a)1.156,(b)21.8,(c)0.0068,(d)328.65,(e)0.219 and (f) 444.

3.Write the following as full(decimal) numbers with standard units: (a) 286.6mm, (b)85 microV, (c)760 mg, (d) 60.0 ps, (e) 22.5fm, (f) 2.50 gigavolts.

4.A light year is the distance light travels in one year( at speed-2.998 x 10^8m/s). (a) how many meters are there in 1.00 light-year? (b) An astronomical unit(AU) is the average distance from sun to earth, 1.50 x 10^8 km. How many AU are there in 1.00 light-year? (c) What is the speed of light in AU/h?

5.I agree to hire you for 30 days and you can decide between two possible methods of payment: either (1) $1000 a day, or (2) one penny at the first day, two pennies on the second day and continue to double your daily pay each day up to day 30. Use quick estimation to make your decision and justify it.

6.The speed v of an object is given by the equation v=At^3-Bt, where t refers to time. (a) What are the dimensions of A and B? (b) What are the SI units for the constants A and B?

Answer 1

Chegg policy, we are supposed to solve only one question at a time but I have solved two of them anyway.