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What two things must an astronomer find out in order to calculate a starts absolute brightness?

Three things, really. An astronomer needs to determine the apparent brightness of a star or other object, and needs to know its distance. He would also need to have an estimate about extinction - that is, how much of the light is absorbed on its way.


Why cant you light a candle on the moon?

Because there is no oxygen on the moon. A fire needs oxygen in order to burn.


What does identifying needs mean?

Identifying needs involves recognizing and understanding the specific requirements, desires, or challenges of individuals or groups. It involves listening, observing, and gathering information to determine what is lacking or necessary in order to address those needs effectively. This process is essential for developing solutions or providing support that is tailored to meet those specific needs.


Do timelines have to be to scale?

No, timelines do not have to be to scale. Sometimes timelines are created with compressed or expanded timeframes in order to highlight key events or fit the desired layout. The purpose of the timeline will determine whether it needs to be to scale or not.


Why is light only necessary one the plant has germinated?

Light is necessary for plants after germination because it is required for the process of photosynthesis, which produces energy for the plant to grow. Before germination, the seed relies on stored nutrients for initial growth. Once the seed germinates and starts to photosynthesize, it needs light to continue producing energy for development and maintenance.

Related Questions

What is market needs?

Marketing needs are the ways a business attracts and keeps its customers. In order to determine marketing needs, a business must determine their aimed demographic.


Can a Belgian Browning light twelve serial 11970 fire slugs?

Yes. Needs to be examined by a gunsmith before you attempt in order to determine that choke is not to tight.


What two things must an astronomer find out in order to calculate a starts absolute brightness?

Three things, really. An astronomer needs to determine the apparent brightness of a star or other object, and needs to know its distance. He would also need to have an estimate about extinction - that is, how much of the light is absorbed on its way.


What need sounds to travel in order?

First of all, it needs a source. But mostly, it needs vibrations. Depending on how strong the vibrations are determine how long the sound wave will travel.


What can be used to determine the current needs and desires of the community in order to create new services to increase market share?

A survey.


What sound waves need in order to travel?

First of all, it needs a source. But mostly, it needs vibrations. Depending on how strong the vibrations are determine how long the sound wave will travel.


Why cant you light a candle on the moon?

Because there is no oxygen on the moon. A fire needs oxygen in order to burn.


How is math used in motorcycle mechanics?

It is often used in ratios. It helps to determine how large everything needs to be in order to work properly.


How do you a fix a broken NP 231 transfer case in a 1999 dodge ram?

Start by identifying the way in which it's "broken". That needs to be done in order to determine what repair needs to be made.


What needs to happen in order for photosynthesis to take place?

There needs to be one or more photoactive molecules such as chlorophyll in the presence of light of the wavelengths that it responds to (primarily blue and red).


How do you replace the light bulb of the headlight on a 1998 Chevy Prism?

the headlight assembly needs to come out in order to replace the bulb.


What is GSpot freeware used for?

Gspot freeware allows one to identify codecs used in file videos in order to determine what needs to be installed on one's computer in order to watch that video file.