Answer: Remain unchanged
Explanation:
The boat with water barrel overboard floats in swimming pool when weight of the water displaced by the boat is equal to the buoyant force acting on the boat.
When the water in the barrel is poured overboard, the level of the swimming pool level would remain unchanged as the weight of the boat with the water and barrel would remain unchanged ( as the density and volume of the whole system remains same) and hence, the weight of the water (of the swimming pool) displaced by the boat would remain same.
A boat loaded with a barrel of water floats in a swimming pool. When the water in the barrel is poured overboard, the swimming pool level will remain unchanged.
2) 5m
3) 500m
3) 5,000,000m
An electromagnetic am band radio wave could have a wavelength of 500m, i.e., 500 meters(Option 3).
A wavelength is a disturbance that travels into space with a given frequency and amplitude.
In conclusion, an electromagnetic am band radio wave could have a wavelength of 500m (Option 3).
Learn more about electromagnetic wavelengths here:
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B.A child swinging on a park swing
C.A golf ball after it has been hit off the tee
D.A skier curving back and forth across a wide slope