Answer:
Explanation:
We are given that
Atomic number=2
We have to find the total negative charge on the electrons in one mole of Helium.
We know that atomic number=Proton number
Proton number=Number of electrons=2
Number of electrons in Helium=2
1 mole of Helium= atoms
We know that q=ne
Where n =Number of fundamental units
e=Charge on electron
1 e=
Using the formula
Total negative charge in 1 mole=
Hence, the total negative charge on the electrons in 1 mole of Helium=
Answer:
The maximum torque is 388.8 N-m.
Explanation:
Given that,
Number of turns = 150
Area = 18.0 cm
Current = 50.0 A
Magnetic field = 1.60 T
We need to calculate the maximum torque
Using formula of torque
For maximum value of torque
Put the value into the formula
Hence, The maximum torque is 388.8 N-m.
In general, the surface of Mercury is similar to the Moon (i.e. heavily cratered due to a lack of a heavy atmosphere to erode away primordial impacts). However, there are some key differences: 1) There are few maria on Mercury and they are small.
Answer:
270.8 N
Explanation:
y axis :
N-w=0
N=mg = 40*9.81 =392.4 N
x axis :
P - fs =0
p = meo * N = 0.69 * 392.4 = 270.8 N (ans)