Answer:
<h2>Solving elastic collisions problem the hard way</h2><h3 />Explanation:
perfect drawing
A circuit consists of a conducting movable bar and a lightbulb connected to two conducting rails as shown in the figure below. A
n external magnetic field is directed perpendicular to the plane of the circuit. Which of the following actions will make the bulb light up? (Select all that apply.)
The bar is moved to the left.
The bar is moved to the right.
The magnitude of the magnetic field is increased.
The magnitude of the magnetic field is decreased.
The bar is lifted off the rails.
The bar is moved to the left.
The bar is moved to the right.
The magnitude of the magnetic field is increased.
The magnitude of the magnetic field is decreased.
The bar is lifted off the rails.
1 answer:
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Answer:
5.4 J.
Explanation:
Given,
mass of the object, m = 2 Kg
initial speed, u = 5 m/s
mass of another object,m' = 3 kg
initial speed of another orbit,u' = 2 m/s
KE lost after collusion = ?
Final velocity of the system
Using conservation of momentum
m u + m'u' = (m + m') V
2 x 5 + 3 x 2 = ( 2 + 3 )V
16 = 5 V
V = 3.2 m/s
Initial KE =
=
= 31 J
Final KE =
Loss in KE = 31 J - 25.6 J = 5.4 J.