Answer: The combined velocity = 0.413m/a
Maximum angle Ø = 54.7
Explanation: Please find the attached files for the solution
Answer:
Molecular formulas explains how many atoms of each element are in a compound, and empirical formulas explains the simplest or reduced ratio of elements in a compound. For instance, If a compound's molecular formula cannot be further reduced any more, then the empirical formula is the same as the molecular formula.
B is the answer
Explanation: look at the graph
Answer:
10 Hz.
Explanation:
v = Speed of sound in water = 1520 m/s
= Speed of dolphin = 7.2 m/s
= Frequency transmitted = 2210 Hz
Doppler effect


∴ Difference (in Hz) between this frequency and the number of clicks per second actually emitted by the dolphin is 10 Hz.