2) A clock is advertised as being 99% accurate. Would you buy it?

For physics

a 5000mW blue laser pointer is advertised online. Assuming a wavelength of the laser is 450 nm, approximately how many photons are emitted per second by this laser?

A sports car is advertised to be able to "reach 60 in 5 secondsflat, corner at 0.85 , and stop from 70 in only 168 feet."

At 60 , what is the smallest turning radius that this car cannavigate?

answer in 1 significant figure

Thanks!

14.51 · A simple pendulum 2.00 m long swings through a maximum angle of 30.0° with the vertical. Calculate its period (a) assuming a small amplitude, and (b) using the first three terms of Eq. (14.35). (c) Which of the answers in parts (a) and (b) is more accurate? What is the percentage error of the less accurate answer compared with the more accurate one?