2 years ago

If you place a piece of paper containing a small letter "d" on the stage, what will the image look like under the microscope?

Physics

2 answers:

nadezda [96]2 years ago

7 0

Answer:

it will be

Explanation:

ella [17]2 years ago

3 0

D
because it would look like a backwards p

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Wewaii [24]

current in 3ohm resistor is 0.9

Explanation:

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2 years ago

Using the law of conservation of angular momentum, estimate how fast a collapsed stellar core would spin if its initial spin rat

Nataly_w [17]

Answer:

$\omega_{f} = 1000000\,\frac{rev}{day}$

Explanation:

The law of conservation of angular momentum states that angular momentum remains constant when there is no external moment or forces applied to the system. Let assume that star can be modelled as an sphere, then:

$\frac{2}{5}\cdot M\cdot R_{o}^{2} \cdot \omega_{o} = \frac{2}{5}\cdot M\cdot R_{f}^{2} \cdot \omega_{f}$

The final angular speed is:

$\omega_{f} = \omega_{o}\cdot (\frac{R_{o}}{R_{f}})^{2}$

$\omega_{f} = (1\,\frac{rev}{day} )\cdot (\frac{10000\,km}{10\,km} )^{2}$

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3 years ago

The weight of an astronaut plus his space suit on the moon is only 291 n. how much (in n) do they weigh on earth? (the accelerat

Oksanka [162]

Weight on the Moon = 291 N.
W = g · m, where m stays for the mass and on the Moon g = 1.67 m/s²
291 N = 1.67 m/s² · m
m = 291 kg m / s² : 1.67 m/s²
m = 174.25 kg
Weight on Earth = 9.81 m/s² · 174.25 kg = 1,709.4 N
Answer:
The weight of an astronaut on Earth is 1,709.4 N.

6 0

3 years ago

A cup of tea is mixutre true or false

Hitman42 [59]

Answer:

this is very true

Explanation:

I I should know I'm a tea fanatic

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3 years ago

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