What is the SI base unit of time? (A) the mean solar day

(B) the second

(C) the time it takes light to travel 10^8 m

(D) the rate at which an atom oscillates

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.