Answer:
A
Explanation:
The lets say the magnet is is facing the north and a piece of iron is near it. The iron will become magnetized since the protons will be repelled leaving only the electrons creating a magnetic field. Or in other words a temporary magnet is made, this is only as long a the actual magnet is close enough to the iron.
Answer:
866.92 N
Explanation:
mass of shark, m = 92 kg
density, d = 1040 kg/m^3
Volume, V = mass / density
V = 92 / 1040 = 0.08846 kg/m^3
The lift force is the buoyant force acting on the shark is
Lift force = Volume x density of water x g
Lift force = 0.08846 x 1000 x 9.8
Lift force = 866.92 N
Thus, the lift force is 866.92 N.
The correct answer is D. Atoms of the same element can have different number of neutrons.