Why did NASA launch the COBE mission?
A.
to study radiation from the Sun
B.
to study the leftover radiation from the big bang
C.
to study the amount of helium and deuterium on other planets
D.
to study the process of nucleosynthesis

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Wavelength divides in half and speed stays the same.

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.