The wavelength of light beam b is twice the wavelength of light beam b. the energy of a photon in beam a is:

a. one-fourth the energy of a photon in beam b
b. half the energy of photon in beam b
c. equal to the energy of a photon in beam b
d. twice energy of a photon in beam b four times the energy of a photon in beam b

Corrected question: The wavelength of light beam A is twice the wavelength of light beam B. The energy of a photon in beam A is:

B

Explanation:

Energy = hc/λ

λ(A) =2λ(B)...................equation 1

We will solve for the ratio of energy of A to energy of B.which is

=(hc/λA) ÷ (hc/λB)

referring to equation 1 we have

=(hc/2λB) ÷ (hc/λB)

=hc/2λB) × (λB/hc)

= λB/2λB

=1/2

The energy of A is half of B

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

i would say