Answer:
The centre of sphere of part of which a lens is formed is called the centre of curvature of the lens.
<span>Tectonic plates can either collide or move apart</span>
a). We could read off the period if we had the graph.
The frequency is 1/period.
b). The velocity is the first derivative of the displacement,
so it should lag the displacement by 90° .
The acceleration is the derivative of the velocity,
so that puts it 180° behind the displacement.
c). If we could see the graph, then, knowing the pendulum's
length and the period of its swing, we could calculate the
acceleration of gravity on the planet at which he is at.
The number of 'G-forces' is
9.8 m/s² / (acceleration of gravity where he is at) .
The number is a ratio ... without units.
Answer:
It is found in the Atomic Nucleus
Explanation:
PLEASE MARK ME BRAINLIST PLEASE
Answer:
-35 m/s
Explanation:
Momentum is conserved.
Momentum before firing = momentum after firing
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
Before the bullet is fired, the bullet and rifle have no velocity, so u₁ and u₂ are 0.
0 = m₁v₁ + m₂v₂
Given m₁ = 0.7 kg, v₁ = 350 m/s, and m₂ = 7 kg:
0 = (0.7 kg) (350 m/s) + (7 kg) v
v = -35 m/s
The rifle recoils at 35 m/s in the opposite direction.