This is a trick question. Since the planets are in orbit all the time the distance changes, which is because some planets orbit faster than others. I hope this helped at least a little bit.
Answer:
Velocity will be
Explanation:
We have given mass of alpha particle m = 4 u
Charge on alpha particle
Charge on thorium particle
Diameter is given as d = 15 fm
So radius
Potential energy is given by
From energy conservation
Answer:
x = 3 cm
Explanation:
Given that,
The separation between the slits,
The distance from the slits to a screen, D = 2.5 m
Let x is the spacing between the first-order and second-order bright fringes when coherent light of wavelength 600 nm illuminates the slits,
We know that the bright fringe is given by :
So, the spacing between the first-order and second-order bright fringes is :
x = 0.03 m
or
x = 3 cm
So, the spacing between the first-order and second-order bright fringes is 3 cm. Hence, this is the required solution.
Answer:
thickness t = 528.433 nm
Explanation:
given data
wavelength λ1 = 477.1 nm
wavelength λ2 = 668.0 nm
n = 1.58
solution
we know for constructive interference condition will be
2 × t × μ = (m1+0.5) × λ1 ....................1
2 × t × μ = (m2+0.5) × λ2 ....................2
so we can say from equation 1 and 2
(m1+0.5) × λ1 = (m2+0.5) × λ2
so
..............3
put here value and we get
= 1.4
...................4
so we here from equation 4
m1+0.5 = 7
m1 = 3 .................5
m2+0.5 = 4
m2 = 2 .................6
so now put value in equation 1
2 × t × μ = (m1+0.5) × λ1
2 × t × 1.58 = (3+0.5) × 477.1
solve it we get
thickness t = 528.433 nm
1. As you push a cereal box across a tabletop, the sliding friction acting on the cereal box_____.
<span> d.) acts in the direction opposite of motion. </span>
2.) Projectile motion is caused by____________.
d.) the downward force of gravity and an initial forward velocity.