A weather forecast shows that the humidity will increase to 100% in the next couple of days. How might this affect the weather?I
2 answers:
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Answer:B
Explanation:
Given
First motor has three times as much as power as another
Let the power of smaller motor be P
Therefore bigger motor has power 3 P
and we know that energy
Larger motor
Smaller motor
Therefore smaller motor will do same work if it takes three times the time taken by Larger motor
Answer:
1.24
Explanation:
The resistivity of copper
The resistivity of Aluminum,
The wires have same resistance per unit length.
The resistance of a wire is given by :
According to given condition,
So, the required ratio of the diameter of Aluminum to Copper wire is 1.24.
mass number of uranium 238 is sum of number of proton and neutrons in it
While atomic number is just number of protons
So total number of protons in it = 92
total number of neutrons in it = 238 - 92 = 146
mass of proton = 1.0073 amu
mass of neutron = 1.0087 amu
now for the calculation of mass of nuclei is given as
so option B is correct