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Alexus [3.1K]
2 years ago
15

Malika is writing an essay about the Sun. Below is the first paragraph in the essay. The Sun is an average-size star that is loc

ated at the center of the solar system. This hot, glowing ball of gas has a diameter of 1,393,000 km. This means 109 Earths would fit side by side across the diameter of the Sun. At the surface, the Sun’s temperature is about 550 degrees Celsius. Earth is located just under 150 million kilometers from the Sun. Malika quickly realizes this paragraph contains an error. Which statement identifies the error?
Physics
2 answers:
djverab [1.8K]2 years ago
8 0
The 109 Earth's the sun can hold over billion Earth's
amm18122 years ago
6 0

Answer:

The statement that the surface temperature of the sun is 550 degree Celsius is wrong. All other statements about the sun is right.  

Explanation:

Actually the temperature of sun's surface is about 5500 degree Celsius.

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convex lenses.

eyeglasses with convex lenses increase refraction, and accordingly reduce the focal lenght

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2 years ago
You have two springs. one has a greater spring constant than the other. you also have two objects, one with a greater mass than
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The answer should be "The object with the greater mass should be attached to the spring with the smaller <span>spring constant."

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4 0
3 years ago
Upper A 16​-foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away f
Sav [38]

Answer:

The ladder is moving at the rate of 0.65 ft/s

Explanation:

A 16​-foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from the building at 2 ​feet/second. We need to find the rate at which the top of the ladder moving down when the foot of the ladder is 5 feet from the​ wall.

The attached figure shows whole description such that,

x^2+y^2=256.........(1)

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Differentiating equation (1) wrt t as :

2x.\dfrac{dx}{dt}+2y.\dfrac{dy}{dt}=0

2x+y\dfrac{dy}{dt}=0

\dfrac{dy}{dt}=-\dfrac{2x}{y}

Since, y=\sqrt{256-x^2}

\dfrac{dy}{dt}=-\dfrac{2x}{\sqrt{256-x^2}}

At x = 5 ft,

\dfrac{dy}{dt}=-\dfrac{2\times 5}{\sqrt{256-5^2}}

\dfrac{dy}{dt}=0.65

So, the ladder is moving down at the rate of 0.65 ft/s. Hence, this is the required solution.

8 0
3 years ago
ОТВЕТЬТЕ !!!!СРОЧНО!!!
FromTheMoon [43]

Answer:

ответ 1.25 × 10‐³ и вот ваш ответ

8 0
3 years ago
The minimum energy needed to eject an electron from a sodium atom is 4.41 x 10-19 j. what is the maximum wavelength of light, in
Minchanka [31]
The energy of an electron as it is ejected from the atom can be calculated from the product of the Planck's constant and the frequency of the light energy. We can calculate the wavelength from the frequency we can calculate. We do as follows:

E = hv
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v = 6.66x10^14 /s

wavelength = speed of light / frequency
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wavelength = 3x10^8 / 6.66x10^14
wavelength = 4.51x10^-7 m = 450.75 nm
5 0
3 years ago
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