3 years ago

10 POINTS! SPACE QUESTION!!

Physics

1 answer:

Volgvan3 years ago

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Answer; they are larger and made of rocky material

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Norma-Jean [14]

1st question is False, 2nd question is True

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Describe an object’s motion when balanced forces act on it

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Balanced forces do not cause a change in motion. When balanced forces act on an object at rest, the object will not move. If you push against a wall, the wall pushes back with an equal

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It has been suggested that a heat engine could be developed that made use of the fact that the temperature several hundred meter

lesantik [10]

Answer:

efficiency = 5.4%

Explanation:

Efficiency of heat engine is given as

$\eta = \frac{W}{Q_{in}}$

now we will have

$W = Q_1 - Q_2$

so we will have

$\eta = 1 - \frac{Q_2}{Q_1}$

now we know that

$\frac{Q_2}{Q_1} = \frac{T_2}{T_1}$

so we have

$\eta = 1 - \frac{T_2}{T_1}$

$\eta = 1 - \frac{273+6}{273+22}$

$\eta = 0.054$

so efficiency is 5.4%

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3 years ago

What is Snell law of refraction????

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$\huge\mathbb\colorbox{black}{\color{white}{⏫FORMULA⏫}}$

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Explanation:

Snell's law (also known as Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

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Yes, it is. The summers and the winters are getting warmer. Also in cold places like Alaska, the temperatures are rising.

Explanation:

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