1) How can astronomers determine the chemical composition of stars?

2 answers:

8 0

1. The astronomers can determine the chemical composition of stars by analyzing their emission and absorption as the spectra of the sun and the stars exhibits bright and dark lines are these can be caused by the elements absorbing and emitting light at the specific wavelengths,

2. All objects emit radiation as a result of the growing temperature of the charged particles within the objects as the amount of radiation emitted depends on the temperature of the object.

3. The main components of the Milky Way are:

Disk, bulge and halo.

4. The main difference between the atmospheres of Jupiter and Neptune is that Jupiter has methane clouds.

5. The techniques used to find the exosolar planets are based on An analysis of light.

tatiyna4 years ago

6 0

1). B
2). none of those choices satisfies me
3). B
4). A
5). D

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What dose fixed supply mean? Tell what a fixed supply curve looks like and heat it’s appearance means

devlian [24]

Answer:

The quantity of some goods or productive factors is totally fixed, whatever their price, for example, there is only one Mona Lisa from Da Vinci.

Explanation:

Nature's original endowment of land can also be considered fixed. A rise in the price offered for land cannot create yet another corner at the junction of 57th Street with Fifth Avenue in New York City. A rise in the pay of famous athletes is unlikely to alter their effort. When the quantity supplied is constant at all prices, what is paid to use such a factor of production is called economic rent or pure economic rent.

When supply is independent of price, the supply curve is vertical in the relevant interval. The land continues to contribute to production regardless of its price. The increase in demand for a fixed factor only affects the price. The quantity supplied does not vary and the rise in price is exactly the same as the upward shift in demand.

When a tax is applied to a fixed good or service, it is paid entirely by (or "transferred" to) the supplier (for example, by the landowner), who absorbs it in its entirety, losing part of its economic income. The consumer buys exactly the same amount as before the good or service without costing mor

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3 years ago

A car traveling at 60 km/h will skid 30 m when its brakes are locked. if the same care is traveling at 180 km/h, what will be th

Flauer [41]

The first car travels at 60km/h and skid at 30m away from the starting point while another car is also traveling at 180km/h. Now, we need to solve for the skidding distance.
We assigned variables such as:
V1=60km/h
V2=180km/h
Skid1=30m
Skid2=?
We solve this by ratio and proportion method such as shown below:
V1/V2=skid1/skid2
60/180=30/skid2
skid2=(30*180)/60
skid2=90meters

Th answer is 90 meters.

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3 years ago

Read 2 more answers

I NEED THE KNOWLEDGE OF YOU SMART GUYS OUT THERE!!!!!!

Veseljchak [2.6K]

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In 1967, new zealander burt munro set the world record for an indian motorcycle, on the bonneville salt flats in utah, with a ma

Fed [463]

Draw a velocity-time diagram as shown below.

Because a velocity of 26.82 m/s is attained in 4.00 s from rest, the average acceleration is
a = 26.82/4 = 6.705 m/s²
The time required to reach maximum velocity of 82.1 m/s is
t₁ = (82.1 m/s)/(6.705 m/s²) = 12.2446 s

The distance traveled during the acceleration phase is
s₁ = (1/2)at₁²
= (1/2)*(6.705 m/s²)*(12.2446 s)²
= 502.64 m

Answer:
The time required to reach maximum speed is 12.245 s
The distance traveled during the acceleration phase is 502.6 m

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3 years ago

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zzz [600]

Answer:

Distance / Time = Speed

Explanation:

This is because you want to see how much distance you cover within a time interval.

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