Water expands when it freezes (that's why you should never put closed, fully filled water bottles in the freezer !)
We know, F = m.a
Here, m = 1.5 Kg
a = v/t = 2/0.3 = 6.67 m/s
Substitute their values,
F = 1.5 * 6.67
F = 10 N
In short, Your Answer would be 10 Newtons
Hope this helps!
Explanation:
The force is 186.5 N. 3.8% of the force is directed downward. So the vertical component of the force is:
Fᵧ = 0.038 (186.5 N)
Fᵧ = 7.087 N
The horizontal component is found with Pythagorean theorem:
F² = Fₓ² + Fᵧ²
(186.5 N)² = Fₓ² + (7.087 N)²
Fₓ = 186.4 N
So the work done is:
W = Fd
W = (186.4 N) (7.4 m)
W = 1379 J
Round as needed.
Answer:
Q = 1.52 X 10⁻⁷ C.
Explanation:
String is inclined at 10 degree with the vertical so the vertical component of T will balance the weight and the horizontal component will balance the force of repulsion F.
T Cos 10 = mg
T Sin 10 = F
Tan 10 = F / mg
F = mg Tan 10
= 10⁻³ x 9.8 x .176
= 1.728 x 10⁻³ .
Force of repulsion F = K Q² / R²
Distance between two charges = 2 x 1 x sin 10
= .347 m
1.728 X 10⁻³ = ![[tex]\frac{9\times10^9\times Q^2}{(0.347)^2}](https://tex.z-dn.net/?f=%5Btex%5D%5Cfrac%7B9%5Ctimes10%5E9%5Ctimes%20Q%5E2%7D%7B%280.347%29%5E2%7D)
[/tex]
Q² = 2.31 X 10⁻¹⁴
Q = 1.52 X 10⁻⁷ C.
