This question is from the Doppler effect. As the object which is in motion goes off from the other, there's a reduction in the frequency. This is due to the fact that successive soundwave get to be longer. So that the pitch will then be lowered. When the person observing moves towards what is making the sound, each soundwave that follows gets faster than the previous.
The answer is Caribbean Sea south of San Juan, Puerto Rico. A protectorate,
in its beginning accepted by modern international law, is a reliant territory
that has been arranged local independence and some individuality while still remembering
the suzerainty of a better sovereign state.
If an object moves in a circular path, this type of motion is called uniform circular motion.
The speed of the object is constant in this type of motion.
As velocity is a vector quantity, it keeps on changing. It can be given by drawing tangent to the circle.
Acceleration acts towards the center of circle.
Hence, out of the given four options, the correct statement about a planet orbiting a star in uniform circular motion is (d) i.e. The acceleration vector of the plant points towards the center of the circle.