Answer:
Explanation:
wave length of light λ = 502 nm
screen distance D = 1.2 m
width of one fringe = 10.2 mm / 20
= .51 mm
fringe width = λ D / a , a is separation of slits
Puting the values given
.51 x 10⁻³ = 502 x 10⁻⁹ x 1.2 / a
a = 502 x 10⁻⁹ x 1.2 / .51 x 10⁻³
= 1181.17 x 10⁻⁶ m
1.18 x 10⁻³ m
= 1.18 mm .
150(x+5)-150x=x(x+5)
150x+750-150x=x^2+5x
x^2+5x-750=0
(x-25)(x+30)=0
x=25
Answer:
2 blocks/hours
Explanation:
(See the attachment for visual reference on direction & displacement)
Average velocity is total displacement over total time. It can be expressed mathematically as:
Where <em> </em>is velocity and is displacement. Note that displacement means changes in position (final position - initial position)
Our initial position is at 0 blocks and then after travelling to the final destination, we see from the picture that it ends at position of 2 blocks. That can be calculated by subtracting 5 by 3 which will equal to 2 blocks.
Therefore: