Answer:
The items here are describing either a condition in a later interacton or a protogalactic cloud. The results matching with spiral and elliptical galaxy are:
For spiral galaxy are options 6,3,2 and 5.
and for elliptical galaxy are options 4 and 1.
Explanation:
Here it is given that astrnomers suspect that types of galaxy can be affected both by the conditions which occurs due to protogalactic cloud and then from it forms the initial conditions and then by the later interactions with the other galaxies.
so, both types of galaxies are matched with their respective items given:
A. Spiral galaxy:
2. A galaxy collision results tostripping of gas.
3. The protogalactic cloud rotates in a very slow motion.
5. The density of protogalactic cloud is very high.
6. when the protogalactic cloud shrinks cloud forms very rapidly.
B. Elliptical galaxy:
1. The protogalactic cloud has high angular momentum.
4. Most of the protogalactic gases settles down into a disk.
Answer:
as its mass and velocity will less so its momentum will be less than that of baseball
Answer:
a) 0.41 m/s
b) 0.51 m/s
Explanation:
(a)
M = total mass of wagon, rider and the rock = 93.1 kg
V = initial velocity of wagon = 0.456 m/s
m = mass of the rock = 0.292 kg
v = velocity of rock after throw = 15.4 m/s
V' = velocity of wagon after rock is thrown
Using conservation of momentum
M V = m v + (M - m) V'
(93.1) (0.456) = (0.292) (15.4) + (93.1 - 0.292) V'
V' = 0.41 m/s
b)
M = total mass of wagon, rider and the rock = 93.1 kg
V = initial velocity of wagon = 0.456 m/s
m = mass of the rock = 0.292 kg
v = velocity of rock after throw = - 15.4 m/s
V' = velocity of wagon after rock is thrown
Using conservation of momentum
M V = m v + (M - m) V'
(93.1) (0.456) = (0.292) (- 15.4) + (93.1 - 0.292) V'
V' = 0.51 m/s