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3 years ago

If two stars are the same distance from us and they both appear to be the same

Physics

2 answers:

34kurt3 years ago

8 0

It is a, apparent magnitude

Ivan3 years ago

6 0

Answer:

The answer is A they have the same apparent magnitude

Explanation:

They can have different absolute magnitudes, with the brighter star being further away than the other. These can have the same apparent magnitude as seen from Earth, which also tells you that apparent magnitude depends on the location of the observer.

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Ella has a mass of 56 kg, and Tyrone has a mass of 68 kg. Ella is standing at the top of a skateboard ramp that is 1.5 meters ta

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Explanation:

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3 years ago

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Read the list of phrases from the article.

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Answer:

(D)

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Explanation:

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3 years ago

Select the statement that is not true about the Hubble Telescope:

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The option is B is not true for Hubble telescope.

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3 years ago

A 500 W hair dyer is used to dry hair for 6 minutes a day for 3 days. How much energy is used? A laptop uses 75 W. The cot of el

zzz [600]

Answer:

See the answers below.

Explanation:

We will solve this problem by calculating each part separately.

A 500 W hair dyer is used to dry hair for 6 minutes a day for 3 days.

Energy can be calculated by multiplying the value of the power of the equipment by the amount of time of use.

$500 [W]*[\frac{6min}{1day} ]*[\frac{1day}{24hr} ]*[\frac{1hr}{60min} ]=2.083 [W]$

The cots of electricity is 5.6 cents per kWh. How much would it cost to operate the laptop for 24 hours a day for one week?

We know that the power of the latop is 75 [W], then we can calculate the cost, multiplying the value of the power by the value of the cost by the time of use of the computer.

$0.075[kW]*5.6[\frac{cents}{kw*h}}]*[\frac{24hr}{1day}]*[1week]*[\frac{7days}{1week} ]=70.56 [cents]$

A toaster oven is 85% efficient. It uses 1200 J of energy. How much thermal energy is it producing?

Efficiency is defined as the relationship between the energy obtained on the energy delivered. Almost always the energy delivered is greater than the energy obtained (first law of thermodynamics).

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3 years ago

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Yuki888 [10]

Explanation:

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2 years ago

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