An astronomer discovers a massive galaxy which has four nuclei. What is a likely explanation for a galaxy having more than one n
1 answer:
You might be interested in
Answer:
Part a)
Width of the slit is
Part b)
Ratio of intensity is given as
Explanation:
Part a)
As we know by the formula of diffraction we will have
so we have
so we will have
Part b)
As we know that the intensity in diffraction pattern is given as
so for angle 45 degree
Answer:
A) 10 m/s
Explanation:
We know that according to conservation of momentum,
m1v1 + m2v2 = m1u1 + m2u2 ..............(equation 1)
where m1 and m2 are masses of two bodies, v1 and v2 are initial velocity before collision and u1 and u2 are final velocities after collision respectively.
From the given data
If truck and car are two bodies
truck : m1 = 2000 Kg v1 = 5 m/s u1 = 0
car : m2 = 1000 kg v2 = 0 u2 = ?
final velocity of truck and initial velocity of car are static because the objects were at rest in the respective time.
substituting the values in equation 1, we get
(2000 x 5) + 0 = 0 + (1000 x u2)
u2 = x 5
= 10 m/s
Hence after collision, car moves at a velocity of 10 m/s