The wavelength of green light is 550 nm. If an electron has the same wavelength, determine the electron velocity and momentum. (b) Repeat part (a) for red light with a wavelength of 440 nm. (c) For parts (a) and (b), is the momentum of the photon equal to the momentum of the electron?

Yes

Explanation:

Because using Broglie formula of lambda=h/mv,

velocity v=h/(m x lambda).

So the momentum of the photon of light will also use p=h/lambda resulting in the same momentum for each part a and b

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles