Answer:
Explanation:
= Distance covered = 1 m
= Time taken = 3.44 ns
c = Speed of light =
Velocity would be
Time in rest frame is given by
It lived before decaying
The forces of gravity between two objects are inversely proportional to
the square of the distance between them. So reducing the distance
by 1/2 means increasing the gravitational force by 2² = 4 times.
The 1 million newtons becomes 4 million newtons.
Note that this does NOT mean the satellite's altitude above the surface.
When you're calculating gravitational forces, it's the distance between
the centers of the objects. So the question is a meaningful exercise
only if we use the distance between the satellite and the planet's center.
Answer:
θ = 34.77°
Explanation:
From diffraction equation:
where,
m = order of diffraction
λ = wavelength of light used
d = slit separation
θ = angle
Therefore, for initial case:
m = 2
λ = 600 nm = 6 x 10⁻⁷ m
d = slit seperation = ?
θ = angle 20°
Therefore,
Now, for the second case:
m = 5
λ = 600 nm = 6 x 10⁻⁷ m
d = slit seperation = (1.5)(3.5 x 10⁻⁶ m) = 5.26 x 10⁻⁶ m
θ = angle = ?
Therefore,
<u>θ = 34.77°</u>
Answer:
Weight, W = 400 N
Explanation:
Give that,
Mass of a girl, m = 40 kg
We need to find the weight of a girl.
Weight of an object is given by :
W = mg
g is the acceleration due to gravity
Putting all the values,
W = 40 kg × 10 m/s²
= 400 N
Hence, the weight of a girl is 400 N.