For a few hours, some satellites experienced electrical failure and at the same time, radio communications at high latitudes were also disrupted. Which is an astronomer most likely to predict was the cause coronal mass ejections.
<h3><u>
Explanation:</u></h3>
A process of a release of plasma with magnetic field from the cornea of sun refers to a coronal mass ejection (CME). These usually happen during the time of a solar prominence eruption. These will be following solar flares. IN the solar wind the plasma will be released and it will get observed by the images taken by coronagraph.
During this process solar particles will be sprayed out. These will be thrown into solar winds and will be very dangerous during the time they reach the earth. This will create an adverse effect and a serious disruption in the environment.
Answer:
D) Beta galactosidase will not be produced.
Explanation:
Promoter is necessary to start the transcription of the structural gene. The position of promoter is important because the gene which is downstream to promoter will be transcribed and the gene upstream to the promoter will not be transcribed.
Lac operon has three structural gene lacZ, lacY, and lacA. Lac Z codes for β galactosidase, lac Z codes for permease and Lac A codes for transacetylase. So if promoter for the lac operon moves between the beta-galactosidase (lacz) gene and the permease (lacy) gene, then the beta-galactosidase gene will not be produced because it is places upstreamed to the promoter.
Answer:
Calcium
Explanation:
Parathyroid hormone (PTH) is a hormone that is secreted by the parathyroid gland. It is the major regulator of the plasma concentration of calcium ions. It regulates calcium ions in the kidney, intestine and bones.
In the kidney, is involved in the re-absorption of calcium in distal ducts and the renal collecting duct, it is also involved in activating the conversion of 25-hydroxy vitamin D into 1,25-dihydroxy vitamin D (calcitriol).
In the intestine, PTH is involved in the absorption of calcium, by increasing vitamin D production.
In the bone, it helps in regulating calcium levels; when serum calcium level is low, PTH stimulates the activity of the osteoclast, to produce more calcium.
Albedo (al-bee<span>-doh) is a measure of how much light that hits a surface is reflected without being absorbed. Something that appears white reflects most of the light that hits it and has a high albedo, while something that looks dark absorbs most of the light that hits it, indicating a low albedo.</span>
Answer:
<h3>C. 6.50 x 10^3</h3>
Explanation:
The satellite revolves around moon due to centripetal force which is provided by gravity in this context so we can equate gravity and centripetal force.
where, m is mass of satellite
M is mass of moon
ω is angular velocity
G is Universal gravitational constant
R is the radius of moon
from the above equation we get ω as,
here M = 7.36 X 10^22
R = 1.738 X 10^6
G =6.67 X 10^-11
T= 6.50 X 10^3 seconds
