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Answer: Two characteristics define brightness: luminosity and magnitude. ... The size of the star and its surface temperature determine its luminosity. Apparent magnitude of a star is its perceived brightness, factoring in size and distance, while absolute magnitude is its true brightness irrespective of its distance from earth. brainliest?

Explanation:

Answer: The answer is...

Explanation: I dont know

Answer:

B. Pioneer

Explanation:

The first species to arrive are fast-growing “weedy species,” such as lichens or small annual plants, which create the first layers of soil as they decompose.

Answer:

B. Pioneer

Explanation:

The pioneer group is the first species to arrive in ecological succession. Hence, option (B) is the correct answer.

Answer:

answer

Explanation:

The rocket is 19.5 m above the ground when h=19h=19:

h19.50tttamp;=−8t2+32tamp;=−8t2+32tamp;=−8t2+32t−19.5amp;=−32±322−4(−8)(−19.5)−−−−−−−−−−−−−−−−√2(−8)amp;=−32±1024−624−−−−−−−−−√−16amp;=−32±400−−−√−16amp;=−32±20−16amp;=−32+20−16=0.75amp;=−32−20−16=3.25amp;amp;amp;amp;amp;amp;amp;amp;Substitute h=19.amp;Subtract 19.5 on both sides.amp;Solve for t using the Quadratic Formula.amp;Simplify.amp;Subtract.amp;Evaluate the root.amp;Find the two solutions.

h

19.5

0

t

t

t

​  

amp;=−8t  

2

+32t

amp;=−8t  

2

+32t

amp;=−8t  

2

+32t−19.5

amp;=  

2(−8)

−32±  

32  

2

−4(−8)(−19.5)

​  

​  

amp;=  

−16

−32±  

1024−624

​  

​  

amp;=  

−16

−32±  

400

​  

​  

amp;=  

−16

−32±20

​  

amp;=  

−16

−32+20

​  

=0.75

amp;=  

−16

−32−20

​  

=3.25

​  

amp;

amp;

amp;

amp;

amp;

amp;

amp;

​  

amp;Substitute h=19.

amp;Subtract 19.5 on both sides.

amp;Solve for t using the Quadratic Formula.

amp;Simplify.

amp;Subtract.

amp;Evaluate the root.

amp;Find the two solutions.

​  

The rocket will then be at least 19.5 m above the ground for the interval 0.75≤t≤3.25  

0.75≤t≤3.25

The time interval for which the rocket is more than 3200 km above the ground level is 61.25 seconds.

To solve this problem, we need to find the time interval for which the rocket's distance above the ground level is greater than 3200 km.

We can start by setting the equation for the rocket's distance above the ground level equal to 3200:

We can then solve this equation for t using the quadratic formula

[tex]480t - 16t^2 = 3200\\t = (-480 +/- sqrt(480^2 - 4*(-16)*3200)) / (-32)\\This simplifies to:\\t = (-480 +/- sqrt(480^2 + 256000)) /\\ (-32)t = (-480 +/- sqrt(2304000)) /\\ (-32)t = (-480 +/- 1500) / (-32)t = (-1980) /\\(-32)t = 61.25t = -24.25\pi[/tex]

Since the time interval we are looking for is positive, we can ignore the negative solution. The time interval for which the rocket is more than 3200 km above the ground level is therefore 61.25 seconds.

Learn more about quadratic equation, here:

https://brainly.com/question/17177510

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Answer: D. force applied to the foot by the ball.

Explanation:

The basic premise of force is that for every action, there is a reaction. The reaction force is the force that pushes back so to speak, against the action that you initiated.

This reaction force by acting against us, ensures that we move forward by pushing us.

When the player struck the ball, the ball pushed back against the player and this force that was applied to the foot by the ball was the reaction force.

Answer:ohh i think for elk its low but in past it was high and willow tree on past was less now it is more

Explanation:

Here is my favorite. Clathrus Archeri. It's a fungus that is found in gardens and stuff and it is super cool looking. You can also search for it as Octopus Stinkhorn fungus.

Answer:

The polar membranes/ions go through the protein to bypass the hydrophobic tails, which are "afraid" of charged molecules.

Glucose passes through the protein because it's too big to diffuse on its own.

I hope this information was very helpful.

Answer:

genetically based is the answer

Answer:

I learned that there is a gooey, film-like substance that acts like a lens for sheep to see.

Explanation:

Answer:

Runoff water.

Explanation:

Explanation:

Most diving birds have (relatively) long necks and shorts legs, although their necks aren't as long as say herons, storks or egrets. Take the common loon for instance. Their necks can be up to half as long as their bodies but their legs are so short and set so far back that they are very awkward on land.

Answer: they can extend it out and twist their head around so easy

Explanation:

Answer:

hi

Explanation:

The lens is a material made of glass or plastic bounded by two surfaces. ... A mirror is a reflector that is shiny from one side and reflects the light rays coming from the object to make it appear as an image to the other side. The lens is of two types viz: Concave lens and convex lens.

have a nice day

Answer:

The difference between mirror and lens lies in how light reflects when falls over their surface. When light interacts with any surface, mainly two things happen; Reflection and Refraction. The main difference between mirror and lens is that image forms by reflection, as the light falls on a mirror. In lens, the image is formed by refraction.

Answer:

Explanation:

This is because immunization programmes are programmes organised by the government to prevent some certain diseases by boosting our immune system to prevent them through vaccines.

Theses programmes for infants include DPT, measles, poliomyelitis, BCG and MMR.

(ii) For childre include TT, small pox, DTTyphoid, and TAB.

(iii) For pregnant woman it include TT and hepatitis-B.

Answer: p = -35

Explanation:

p/5 = -7

p = -35

Answer: The lungs bring oxygen into the body, to provide energy, and remove carbon dioxide, the waste product created when you produce energy. The heart pumps the oxygen to the muscles that are doing the exercise. When you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide.

Answer:

D.

Explanation:

They consume both things that consume food and things that produce food.

Answer:

Its B

Explanation:

Answer:

A.it must be well-tested and have supported results every time

Answer:

Explanation:b

Answer:

Most foods especially carbohydrate diets ends up in the blood stream in the form of sugar causing a spike

Explanation:

The high sugar level in the blood then penetrate the body cells in an uncontrolled manner since there is no enough or no insulin produced to regulate it.

Answer:

The sugar produced by photosynthesis can be converted into the sugar glucose. Thousands of glucose molecules can be linked together to form the complex carbohydrate cellulose. Cellulose is a very tough molecule that is used to build the cell wall of plant cells.

Explanation:

Answer:

D. Sami had low birth weight as a lamb but quickly grew into a large sheep.

Explanation:

The Sami lamb is an example of culled because it has the characteristics of quick growth. Culling is the process of separating organisms from a group of same type of organisms due to presence of desired or undesired characteristics. Sami sheep has a unique characteristic of having less weight at time of birth but having quick growth features that make to gain more weight and become large sheep so this sheep is removed from the population for its good traits.

Answer:

I can not see the picture?