Answer:
Explanation:
Consider the motion of the ball attached to string.
In triangle ABD
height gained by the ball is given as
= mass of the ball attached to string = 110 g
= speed of the ball attached to string just after collision
Using conservation of energy
Potential energy gained = Kinetic energy lost
Consider the collision between the two balls
= mass of the ball fired = 26 g
= initial velocity of ball fired before collision = ?
= final velocity of ball fired after collision = ?
using conservation of momentum
Using conservation of kinetic energy
Answer:
1. A fossil that is widespread geographically but only occurs in one layer or a small number of layers of rock
2. Sediment deposited into water will spread in a horizontal and continuous sheet
3. Any undisturbed sequence of layered rocks has the oldest rock on the bottom and newest rock on the top
4. Study of fossils
5. Study of rock layers and the process that form them
Sorry if any of these are wrong
1.igneous rocks are formed when magma or lava cools and hardens
2. the cooling rate of the rock
Answer:
the index of refraction for the transparent material is 1.48
Explanation:
let n1 = 1.0 be the refractive index of air and n2 be the refractive index of the trasnparent material.
then:
Snell's Law state that:
n1×sin(∅1) = n2×sin(∅2)
where ∅1 = 56.0° is the angle of incidence and ∅2 = 90 - 56.0 = 34° be the angle refraction.
n1×sin(∅1) = n2×sin(∅2)
n2 = n1×sin(∅1)/sin(∅2)
= (1.0)×sin(56.0°)/sin(34.0°)
= 1.48
Therefore, the index of refraction for the transparent material is 1.48
