3 years ago

Which of the following produces converging rays?

Physics

1 answer:

zysi [14]3 years ago

6 0

Answer:

Convex Lens poduces converging rays

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\[S = \Delta Q / T\] where S - entropy, Q heat and T temperature \[S = 295/402 = 0.733 \]
SO IT'S B

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Tonight in the sky the Moon can be seen next to a very bright star named Aldebaran. How soon will the Moon be seen next to that

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the answer is in 27.3 days

Explanation:

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3 years ago

An object with mass 80 kg moved in outer space. When it was at location <7, -34, -7> its speed was 14.0 m/s. A single cons

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Answer:

W = -2080 J

Explanation:

initial position vector of the object is given as

$r_i = 7\hat i - 34\hat j - 7 \hat k$

similarly final position vector is given as

$r_f = 12\hat i - 42\hat j - 11\hat k$

now the displacement of the object is given as

$\vec d = \vec r_f - \vec r_i$

now we will have

$\vec d = (12\hat i - 42\hat j - 11\hat k) - (7\hat i - 34\hat j - 7 \hat k)$

$\vec d = 5\hat i - 8\hat j- 4\hat k$

now the force on the object is given as

$\vec F = (200\hat i + 460 \hat j - 150 \hat k)$

so here in order to find the work done

$W = \vec F . \vec d$

$W = (200\hat i + 460 \hat j - 150 \hat k). (5\hat i - 8\hat j- 4\hat k)$

$W = 1000 - 3680 + 600 = -2080 J$

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When you rub two balloons on your sleeve, does it have positive or negative?

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When you rub the balloons, it will take electrons away, which is negative. So, the balloons are negative

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