Answer:
Explanation:
As figure is not given so considering the most relevant diagram for question attached below
We can define Electric field as rate of change of electric potential with respect to space (say x-axis here). It is related in formula as
a) For Region A to B:
As can be seen from figure, point charge moves from 0 to 0.2 along x-axis, the value of electric potential remains constant i.e 5 volts
b) For Region B to C:
As point charge moves from B to C (0.2 to 0.4) along x-axis, the value of electric potential decreases from 5 volts to 3 volts. Electric field induced is:
c) For Region C to D:
As point charge moves from C to D (0.4 to 0.8) along x-axis, the value of electric potential decreases from 3 volts to 1 volt. Electric field induced is:
For Information:
Unit of Electric field is V/m or N/C
Answer:
The area of the gold foil is
Explanation:
Mass of gold foil , m= 27.63 g
Thickness of gold foil ,
Density of gold ,
Let the area of gold foil be A then the total volume of gold foil is given by
=>
=>
Thus the area of the gold foil is
Answer:
(A) 4.75 m/s^{2}
(b) 81.5°
Explanation:
radius (r) = 0.38 m
initial angular velocity (ω') = 1.5 rad/s
angular acceleration (α) = 2 rad/s^{2}
time (t) = 0.5 s
(A) tangential acceleration (a) = α x r
a = 2 x 0.38 = 0.76 rad/s^{2}
- radial acceleration (a') =
final angular velocity (ω) = ω + αt
ω = 1.5 + (2 x 0.5) = 3.5 m/s
a' = = 4.7 m/s^{2}
- total acceleration =
total acceleration = = 4.75 m/s^{2}
(B) tanθ
θ=
θ= = 81.5°
Answer:
B
Explanation:
This is a physics question, know that force is equals to mass divided by acceleration (acc.), so if the same force is applied, say 10 Newton and the mass of A is 2 and the mass of B is 4, then the acceleration of A is 0.2 and that of B is 0.4 by equating, and this applies to all cases.
Option B & Option D is your correct answers.
'cause here, atom has eight electrons in it's valence shell, so it means it has stable structure which falls in group 18
Hope this helps!