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3 years ago

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A wheel has a constant angular acceleration of 1.9 rad/s2. During a certain 7.0 s interval, it turns through an angle of 63 rad.

Assuming that the wheel started from rest, how long had it been in motion before the start of the 7.0 s interval?

1 answer:

Anarel [89]3 years ago

3 0

Answer:

4.5s

Explanation:

That must be the right answer.

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Define the upper mantle and the lower mantle as well give both the thickness and temperature

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Answer:

A

Explanation:

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Jupiter has the strongest gravity of any planet in our solar system. Which quantity will be a maximum there?

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Which of the following statements describes Newton's first law?

jeka94

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F = MA

Explanation:

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Dropping a ball (mass) from the top of a building can show gravity, a form of acceleration.

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3 years ago

The focal length of a lens is inversely proportional to the quantity (n-1), where n is the index of refraction of the lens of th

Ainat [17]

Answer:

46.22 cm

Explanation:

The focal refraction, fr is given by

$fr = \frac {c}{(1.572 -1)} = \frac {c}{0 .572}$

The focal red light is given by

$fv = \frac {c}{(1.605 - 1)} = \frac {c}{0.605}$

$\frac {fv}{fr} = \frac {0.572}{0 .605} = 0.945455$

$\frac {1}{fr} = \frac{1}{image} + \frac {1}{object}$ and making fr the subject we obtain

$fr = \frac {image * object}{(image + object)} = \frac {24.00 * 55} {(24.0 + 55)} = 16.70886 cm$

fv = 0.945455* 16.70886 cm = 15.79747 cm

$image = \frac {object * f} {(object - f)} = \frac {15.79747 * 24.0}{(24.0 - 15.79747)} = 46.22222 cm$

Therefore, violet image is approximately 46.22 cm

5 0

3 years ago

Ô tô chuyển động trên đường cong có bán kính R = 300(m). Nếu vận tốc ôtô tăng đều từ v1 =

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Answer:

Mc ,12,4

Explanation:

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2 years ago