What does the principal quantum number determine?

Physics

1 answer:

morpeh [17]3 years ago

4 0

<span>principal quantum number (n) </span>represents the relative overall energy of each orbital

Hope this helps!

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To escape from a horrible fire, two people are forced to jump from the third story of a burning building onto solid concrete. Wh

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3 years ago

If the range of a projectile's trajectory is six times larger than the height of the trajectory, then what was the angle of laun

zvonat [6]

Answer:

H = 1/2 g t^2 where t is time to fall a height H

H = 1/8 g T^2 where T is total time in air (2 t = T)

R = V T cos θ horizontal range

3/4 g T^2 = V T cos θ 6 H = R given in problem

cos θ = 3 g T / (4 V) (I)

Now t = V sin θ / g time for projectile to fall from max height

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T / V = 2 sin θ / g

cos θ = 3 g / 4 (T / V) from (I)

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θ = 33.7 deg

As a check- let V = 100 m/s

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H = 1/2 * 9.8 * (11.3 / 2)^2 = 156

R = 83.2 * 11.3 = 932

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3 0

3 years ago

a 5.00 × 105 kg rocket is accelerating straight up. Its engines produce 1.50 × 107 of thrust, and air resistance is 4.50 × 106 N

Angelina_Jolie [31]

This one is simple :)

use the equation F = ma and then re-arrange for a.

a = F / m

But there is a trick, so be careful. the question gives you wind resistance. Simply subtract the wind resistance from the thrust of the rocket to get the net force upward.

$1.50 * 10^7N - 4.5 8 10^6N = 1.05 * 10^7N$

So,

$a = \frac{F}{m} = \frac{1.05*10^7N}{5.00*10^5kg}$