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3 years ago

Band of which of these colours are not seen in a spectrum

Physics

1 answer:

Ede4ka [16]3 years ago

7 0

The only colours that are in the spectrum are red, orange, yellow, green, blue, indigo and violet. hope this helps!

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A professor sits on a rotating stool that is spinning at 10.0 rpm while she holds a heavy weight in each of her hands. Her outst

MAVERICK [17]

Answer:

0.5864 m

Explanation:

$r_1$ = 0.705 m

$\omega_1$ = 10 rpm

$\omega_2$ = 20.5 rpm

$\left(m r_{1}^{2}\right) \omega_{1} &=\left(m r_{2}^{2}\right) \omega_{2}$

$r_{2}^{2} &=\frac{\left(m r_{1}^{2}\right) \omega_{1}}{\left(\omega_{2}\right)}$

$=\frac{\left(r_{1}^{2}\right) \omega_{1}}{\left(\omega_{2}\right)}$

$=\frac{\left((0.705 \mathrm{m})^{2}\right)(10 \mathrm{rpm})}{(20.5 \mathrm{rpm})}$

$=\sqrt{\frac{\left((0.705 \mathrm{m})^{2}\right)(10 \mathrm{rpm})}{(20.5 \mathrm{rpm})}}$

$r_{2} =0.5864\ m$

The weights are 0.5864 m apart.

7 0

4 years ago

It is estimated that uranium is relatively common in the earth's crust, occurring in amounts of 4 g / metric ton. A metric ton i

timama [110]

Answer:

The mass of Uranium present in a 1.2mg sample is $4.8 \cdot 10^{-6}\,mg$

Explanation:

The ration between Uranium mass and total sample mass is: $\frac{4g}{1000kg} =\frac{4g}{1000000g}=\frac{1}{250000}$

For a sample of mass 1.2 mg, the amount of uranium is:

$1.2\, mg \cdot \frac{1}{250000}=4.8 \cdot 10^{-6}\,mg$

7 0

3 years ago

Brilliant_brown [7]

1. Both include produces and consumers
2. both represent flow of food and energy

I'll try to think of another

7 0

3 years ago

How does free energy challenge the scientific definition of energy?

gtnhenbr [62]

<span>Free Energy is a thermodynamic quantity given by the subtraction between the internal energy of a system and the product of its absolute temperature and entropy.
</span><span> In physics, the ability to do work.
</span>
I may not be completely sure but compare those 2 things together and you should find your answer.

7 0

3 years ago

g As they reach higher temperatures, most semiconductors... Selected Answer: have an increased resistance. Answers: have a const

pochemuha

Answer:

have an increased resistance

3 0

3 years ago