Answer:
Explained
Explanation:
Both the cores of Earth largely metallic and mainly iron. The primary difference is that the inner core is solid ( higher in density)due to immense pressure and the outer core is moltane, and churned and stirred because of the rotation of inner core. This give the rise to the concept of "Geodyanmo" the reason for Earth's magnetic field.
Both the cores are made of iron and nickel.
Answer:
v₁=0.2 ms
Explanation:
Given that
m₁ = 0.1 kg
u₁ = 0.2 m/s
m₂ = 0.15 kg
u₂ = 0 m/s
Lets take the final speed of the 0.1 kg ball = v₁
Lets take the final speed of the 0.15 kg ball = v₂
Given that collision is elastic that is why e = 1
u₁ - u₂ = v₁ - v₂
0.2 - 0 = v₁ - v₂
v₁ - v₂ = 0.2 ------------1
If there is no any external force on the system then the total linear momentum of the system will be conserve.
m₁u₁ + m₂ u₂ =m₂ v₂ +m₁v₁
0.2 x 0.1 + 0 = 0.15 v₂ + 0.1 v₁
0.02 = 0.1 v₁ + 0.15 v₂
2 = 10 v₁ + 15 v₂ ----------------2
By using equation 1 and 2
We can say that
v₁=0.2 ms
v₂ =0 m/s
In that case, their momentum must be equal.
So, m1v1 = m2v2
20 * 20 = 40 * v2
v2 = 400 / 40
v2 = 10
In short, Your Answer would be: 10 m/s
Hope this helps!
True. It's a bit more complex than simply that, but for the question you asked the answer is A.
Inertia also works in tandem with gravity, and plants orbit they don't revolve (kudos on that! Small pet peeve of mine). Newtons laws of physics will help you understand this more; remember to keep in mind we are talking about space so the suns mass has gravitational pull, but space has no gravity- So inertia plays an important part as well.
Answer:
a) 50 rad/s
b) 39.8 rev
Explanation:
Given:
r = 0.36 m
v₀ = 0 m/s
a = 1.8 m/s
t = 10 s
a) Find: ω
v = at + v₀
v = (1.8 m/s) (10 s) + (0 m/s)
v = 18 m/s
ω = (18 m/s) / (0.36 m)
ω = 50 rad/s
b) Find: Δθ
Δx = v₀ t + ½ at²
Δx = (0 m/s) (10 s) + ½ (1.8 m/s) (10 s)²
Δx = 90 m
Δθ = (90 m) / (2π × 0.36 m)
Δθ = 39.8 rev
