A pulsar is a type of rotating neutron star that emits a beam of electromagnetic radiation. Imagine a pulsar that is moving toward Earth at a speed of 704.500 km/s. It emits mostly radio waves with a wavelength (at the source) of 133.500 cm. What is the observed wavelength of this radiation on Earth

Explanation:

Given:

speed of light source towards the earth,

wavelength of the light emitted by the source,

We know the speed of electromagnetic waves is,

Here since the speed of the source is comparable to the speed of light, we've:

For the doppler effect of EM waves:

answer: a. same unit

explanation:

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