Answer:
C
Explanation:
because the rod is positive, it'll attract the negatives. leaving the positive to stay in the back
Solution: A. Ocean currents.
The hypothesis of Continental drift suggests that in past, there was only one landmass on the Earth -Pangaea which drifted apart due to movement of plate tectonics causing earthquake. This hypothesis is supported by many evidences which includes presence of similar fossils on different landmasses, common land features such as widespread presence of glacial sediments and the ocean currents. As the landmass drifted apart, the ocean crust rose up causing the change in the ocean currents.
Answer:
The frequency of the second wave is half of the frequency of first one.
Explanation:
The wavelength of the second wave is double is the first wave.
As we know that the frequency is inversely proportional to the wavelength of the velocity is same.
velocity = frequency x wavelength
So, the ratio of frequency of second wave to the first wave is
The frequency of the second wave is half of the frequency of first one.
Answer:
5 kg
Explanation:
PE = KE
mgh = KE
m (9.8 m/s²) (1 m) = 50 J
m = 5.1 kg
Rounded to one significant figure, the mass is 5 kg.
Answer: Option (b) is the correct answer.
Explanation:
Metals are malleable and ductile, that means, metals can be beaten into thin sheets and they can be drawn into thin wires.
While showing the property of malleability and ductility, the bonds between metals did not break as there is only change in the shape of metal.
Thus, we can conclude that out of the given options, in metals, the properties of malleability and ductility are explained by the fact that metallic atoms can roll over without breaking their bonds.