Answer:
if the two polarizers have the same direction the transmitted light is 50% of the incident and if the two polarizers are at 90º the transmitted light is zero
Explanation:
The incident light is generally random, that is, it does not have a polarization plane, when the first polarized stops by half, this already polarized light arrives at the second polarizer and the causticity passes
I = I₀ cos² θ
therefore if the two polarizers have the same direction the transmitted light is 50% of the incident and if the two polarizers are at 90º the transmitted light is zero
Answer:
Mass doesn't change.
Weight is measured based on gravitational pull.
Explanation:
Answer:
(a) 
(b) 
Explanation:
We will take ground level as origin and upward is positive direction
the givens are
Part (a)
To find the final velocity we use the kinematic equation
So
Part (b)
To find time of rock trip until it touches the ground we will use simple kinematic equation or simple motion equation
Notice that we substituted vf with negative sign because its direction is downwards
I'd say B.) Increasing the voltage of the battery.
Answer:
Velocity ratio of a lever is 3 means distance travelled by effort is 3 times the distance travelled by the load. Efficiency of the pulley is 60%means 40% of the energy is lost in the machine due to the friction
