This force is called an electrostatic force. To solve for the value of the electrostatic force. Using Coulumbs Law:
F = k * abs (Q1 * Q2) / r^2
where:
k = coulumb's constant, 8.988x10^9 N *m^2/ C^2
Q1 = first charge
Q2 = second charge
r = distance between charges
8.8x10^4 = 8.988x10^9 * abs((-7.5x10^-9) * (11x10^-9)) / r^2
solve for r
The Tonga Trench is located at the tectonic boundary between the Pacific Plate and the Indian-Australian Plate.
It is an Oceanic trench that is located in the south-west Pacific Ocean. It is actually the deepest trench of the southern Hemisphere and the second deepest on Earth.
Answer:
The kinetic energy of the arrow after release is 89.056 J.
Explanation:
Given that,
Mass of arrow, m = 23 g = 0.023 kg
Velocity of the arrow, v = 88 m/s
The power stroke of the bow is 57 cm. The peak draw weight of the bow is 312 N. We need to find the kinetic energy does the arrow have after release. So, it is given by :
So, the kinetic energy of the arrow after release is 89.056 J. Hence, this is the required solution.
The component of weight(
mg) that is responsible for the motion of boxes on ramp is:
Where m = mass of the boxes.
g = Acceleration due to gravity = 9.8
= The angle the ramp makes with the ground. In this case it is 30°.
Since the frictional force is:
μ*N.
Where,
μ = Frictional Coefficient
N = Normal to the ramp =
Therefore, the frictional force becomes =
= μ*
Apply Newton's second law we would get:
- μ*
=
=>
=
μ
-- (A)
Now according to equation of motion:
Where x = 5.8m
= 0
= 0
= 10.24
Plug in the value in the above equation you would get:
= 1.1328
Plug in
in equation (A) and solve for
μ, you would get,
μ = 0.4439
Answer: pimples,oily skin and hair, pubic hair, periods (girls only),etc.