This gots to be the answer, average, seawater in the world's oceans has a salinity of approximately 3.5%, or 35 parts per thousand.
When a current flows through coil, magnetic field is produced around the coil which induces emf also known as back emf. When current in the coil is increased, more magnetic field is produced which in turn increases the induced emf.
Astronomers can measure a star's<span> position once, and then again 6 months later and </span>calculate<span> the apparent change in position. The </span>star's<span> apparent motion is called stellar </span>parallax<span>. The </span>distance<span> d is measured in parsecs and the </span>parallax<span> angle p is measured in arc seconds.</span>
Answer:
After a nucleus with 85 protons undergoes alpha decay, it has 83 protons.
Explanation:
In an alpha particle there are two protons
In the given substance's nucleus, there are total of 85 protons
After the decay, the proton number reduce
The current proton number after decay is
85 -2 = 83
After a nucleus with 85 protons undergoes alpha decay, it has 83 protons.
