Arunner is jogging at a steady 2.3 km/hr. when the runner is 2.6 km from the finish line, a bird begins flying from the runner to the finish line at 13.8 km/hr (6 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. l vb vr finish line how far does the bird travel? even though the bird is a dodo, assume that it occupies only one point in space (a "zero" length bird) and that it can turn without loss of speed. answer in units of km.

Jogger is running at speed 2.3 km/h

His distance from the finishing line is 2.6 km

now the time taken by the jogger to reach the finish line is given as

now in the same time the bird will move to and fro from jogger to finishing line continuously

so the total distance moved by the bird is given as

so the bird will travel total distance 15.6 km in total time of motion

you'd use the equation that establishes a relationship between  energy  and  wavelength, which looks like this

e=h⋅cλ, where

λ  - the wavelength of the photon; c  - the speed of light, usually given as  3⋅108m/s; h  -  planck's constant, equal to  6.626⋅10−34j s

plug the value you were given for the energy of the photon in the above equation to get the wavelength

e=h⋅cλ⇒λ=h⋅ce

λ=6.626⋅10−34js⋅3⋅108ms−1.257⋅10−24j=1.581⋅10−1m