Answer:
W = 8.01 × 10^(-17) [J]
Explanation:
To solve this problem we need to know the electron is a subatomic particle with a negative elementary electrical charge (-1,602 × 10-19 C), The expression to calculate the work is given by:
W = q*V
where:
q = charge = 1,602 × 10^(-19) [C]
V = voltage = 500 [V]
W = work [J]
W = 1,602 × 10^(-19) * 500
W = 8.01 × 10^(-17) [J]
Answer:
Explanation:
When a ray of light travels into rarer medium from the denser medium and the angle of refraction is 90° so the angle of incidence in the denser medium is called critical angle for that pair of media.
Here, the angle of refraction is 90°, so the angle of incidence C is called the angle of incidence which is equal to the critical angle.
A) The vertical component of velocity v is taking the rock to a height
Vertical component =

The time taken to reach maximum height =

So total time of rocks flight =

Range of rock is due to the horizontal component of velocity =

Range =

=

Maximum height =

=

Since range = maximum height
We have



So when angle of projection is

range is equal to maximum height reached.
b) We have range =

=

Maximum of range is reached when

Maximum range =

c) For range to be equal to maximum height only condition is

, it does not depend upon acceleration due to gravity and velocity. That angle is a constant.