Answer:
Average speed of car will be 48 km/hr
Explanation:
Let the total distance is 2d
It is given that first half of the distance car travels with a speed of 40 km/hr
So time taken to cover half of the distance
Second half of the distance is covered with a 60 km/hr
So time taken to cover second half of the distance
So total time to cover 2d distance
Average speed is the ratio of total distance to total time
So average speed
So average speed of car will be 48 km/hr
Answer:
The electric flux through the sphere is
Explanation:
Given
Required
Find the electric flux
Electric flux is calculated using the following formula;
Ф = q/ε
Where ε is the electric constant permitivitty
ε
Substitute ε and
; The formula becomes
Ф =
Ф =
Ф =
Ф =
Ф =
Ф =
Ф =
Ф =
Hence, the electric flux through the sphere is
To solve this problem it is necessary to apply the concepts related to hydrostatic pressure or pressure due to a fluid.
Mathematically this pressure is given under the formula
Where,
= Density
h = Height
g = Gravitational acceleration
Rearranging in terms of g
our values are given as
Replacing we have
Therefore the gravitational acceleration on the planet's surface is (Almost the gravity of the Earth)