Answer:
it take 687 days for Mars orbit around the sun
Answer:
After passing through the glass plate, the red light disperses and meets at point.
The convex lens has two refracting surfaces, and convex kens is called as converging lens. So, at the exact center of the lens, one observes a Dark spot.
Thus, the correct option is a) one observes a dark spot.
Answer:
-20 kg.m/s
Explanation:
We have an object moving at 5 m/s with mass 5 kg. The initial momentum is:
pi = m × vi
pi = 5 kg × 5 m/s = 25 kg.m/s
It undergoes a quick collision with some other object and now moves at 1 m/s. The final momentum is:
pf = m × vf
pf = 5 kg × 1 m/s = 5 kg.m/s
The change in the object's momentum is:
Δp = pf - pi
Δp = 5 kg.m/s - 25 kg.m/s = -20 kg.m/s
