Answer: 1.776933x10^7
Explanation:
Moment of inertia I = 8.26x10^36kgm^2
Mass of planet m = 6.54x10^22kg
Also, Planet is solid sphere so that, Moment of inertia is I = _2_ m
R^2= 0.4 R^2 5
Where R is radius of planet
Putting into calculation
We get,
I = _2_ m R^2
5
8.26x10^36 = 0.4x6.54x10^22xR^2
8.26x10^14 = 2.616 R^2
R = 1.776933x10^7
Answer:
To find the acceleration of the object we have to apply Newton second law of motion that is F = mass × acceleration.
Explanation:
Given ,
F = 130N
M = 24kg
A = ?
F = m× a
then ,
130N = 24kg ×a
a = 130/24 = 5 m/s.
Answer:
In metals there are free electrons at normal temperature so when we increase temperature it resistivity gets increases,so conductivity decreases,while in semiconductor the electrons are not free so when we increase the temperature the covalent bonds begin to break and the electron becomes free so conductivity get.
Explanation:
Answer:
18 groups are in the modern periodic table
<h2>K.E/P.E = m/k tan²φ x ω²</h2>
Explanation:
The given position of block x = x₀ cos(ωt + φ)
The velocity of block v = dx/dt = - x₀ sin(ωt + φ) x ω
The kinetic energy = 1/2 mv² = 1/2 m x₀² sin²(ωt + φ) x ω²
The potential energy of spring = 1/2 k x² , where k is the spring constant
Thus P.E = 1/2 x k x x₀² cos²(ωt + φ)
When t = 0
K.E = 1/2 m x₀²sin²φ x ω²
P.E = 1/2 k x₀² cos²φ
Dividing these , we have
K.E/P.E = m/k tan²φ x ω²