7. solar flare: f.
8. core: h.
9. chromosphere: b.
10. sunspot: d.
11. corona: c.
12. nuclear fusion: j.
13. photosphere: a.
14. solar wind: g.
15. prominence: e.
16. radiation zone: k.
17. convection zone: i.
Answer:
a)
b)
c)
d)
e)
Explanation:
Given:
mass of the object attached to the spring,
spring constant of the given spring,
amplitude of vibration,
a)
Now, maximum velocity is obtained at the maximum Kinetic energy and the maximum kinetic energy is obtained when the whole spring potential energy is transformed.
Max. spring potential energy:
When this whole spring potential is converted into kinetic energy:
b)
Max. Force of spring on the mass:
Now acceleration:
c)
Kinetic energy when the displacement is, :
d)
Spring force on the mass at the given position, :
therefore acceleration:
e)
Frequency of oscillation:
So the wave equation is:
where x = position of the oscillating mass
put x=0
Now put x=0.08
So, the time taken in going from point x = 0 cm to x = 8 cm is:
Answer:
Explanation:
The sound intensity level β can be mathematically defined as
where is the reference intensity and is equal to .
Now,
Answer:
Explanation:
Assuming the tension in the rope is the only force acting on the block, then we can use Newton's second law:
where
F is the net force on the block
m is the mass of the block
a is its acceleration
The tension in the rope is the only force acting on the block, so
F = T = 10 N
The mass of the block is
m = 2 kg
So, solving for a, we find the acceleration:
Answer:
The angle between the direction of the horizontal component of Earth’s magnetic induction and horizontal plane.
Explanation: