Both electric force and gravitational force are conservative and obey inverse square law.
The electric force between two charges q and q' separated by a distance r is calculated as-
Here K is the proportionality constant whose value is
The gravitational force between two masses m and m' separated by a distance r is given as -
Here K' is the proportionality constant whose value is G .
G is called gravitational force constant and its value is given
The electric force is a stronger force and gravitational force is a weaker force.
It is obvious that the value of constant for electric force is much larger than the gravitational force constant.
Out of the four options given in the question the the option four is the correct answer i.e D) The electrical force is much larger than the gravitational force because 10^9 is much greater than 10–11.
The correct answer to this question is <span>48.8N</span><span> on a bearing of </span><span>134.2 degrees.
In order to solve this, first we need to find the resultant force of the men pulling in the north and south directions:
F = 40 - 6 = 34N [due south - 180]
Then, find the resultant force.
R^2 =34^2 + 35^2
R^2 = 2381
R = sqrt(2381)
R = 44.8N
The angle from the vertical is given by:
tan(x) = 35/34
tan(x) = 1.0294
angle = 45.8 degrees
Taking N as zero degrees, then it bears 134.2 degrees.
</span>
Answer:
(a) Total time will be 8.05 hour
(B) Total cost will be $417.6
Explanation:
We have given dryer uses 16 A of current so current i = 16 A
Voltage V = 240 volt
Time t = 45 minutes =45×60 = 2700 sec
So power P = VI = 240×16 = 3840 W
So energy E = power×time = 3840×45×60 = 9396 KJ
(A) Now current in the computer i = 2.7 A
Voltage V = 120 V
So power P = 120×2.7 = 324 W
Now computer is using energy of dryer
So time by which it will use energy is
So time will be 8.05 hour
(b) Cost per kilowatt is $0.12
So total cost =3480×0.12 = $417.6
A.) The higher the altitude, the colder the climate will be
B.) Areas near the equator have warmer climates than areas for form the equator.
D.) Winds that blow inland from oceans or large lakes contain a lot of water vapor that will cause precipitation.
C.) Monsoons.
Answer:
Explanation:
Given that
Bulk modulus ,K = 7.1 x 10¹⁰ Pa
The pressure P₁ = 0.781 x 10⁵ Pa
The final pressure P ₂ = 0 Pa
We know that bulk modulus given as
Now by putting the values
Therefore fractional change will be 11 x 10⁻⁷.