Answer:
43.3J
Explanation:
Given parameters:
Force = 10N
Distance = 5m
Angle = 30°
Unknown:
Work done = ?
Solution:
Work done is the force applied to move a body through a particular distance;
Work done = Force x distance cos Ф
Now insert the parameters and solve;
Work done = 10 x 5 cos 30 = 43.3J
Answer:
Explanation:
Given
Required
Determine the object's speed
Kinetic Energy is calculated as:
Make m the subject
Momentum is calculated as:
Make m the subject
So, we have:
and
Equate both expressions: 
Multiply both sides by v
Make v the subject
Substitute and
Answer:
D
Explanation:
Because it is the principle of conservation of energy which is proved and verified
Option C i.e scattering is the correct answer.
Scattering type of Polarization occurs when light strikes the atoms of a material.
Polarization is the process of transforming unpolarized light into polarized light. There are four methods of polarisation--Transmission, Refraction, Reflaction and Scattering.
