Yr average speed would be about 1151.75 really depends
The magnitude of the acceleration of the elevator is 90m/s^2
Due to Newton's Law ∑ Forces in direction of motion is equal to mass
multiplied by the acceleration
We have here two forces 5000 N in direction of motion and the weight of the person in opposite direction of motion
The weight of the person is his mass multiplied by the acceleration of gravity
So ,
W = mg , where m is the mass and g is the acceleration of gravity
m = 50 kg and g = 9.8 m/s²
Substitute these values in the rule above
W = 50 × 9.8 = 490 N
The scale reads 5000 N
F = 5000 N , W = 490 N , m = 50kg
F - W = ma
5000 - 490 = 50 a
4510 = 50 a
Divide both sides by 50
a = 90.2 m/s²
Hence the acceleration is 90m/s^2
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The third force C is in the opposite direction of the sum of the first two forces, A+B, but the magnitude is the same as A+B
Since A & B are at right angles we can just use Pythagoras and trig:
A+B magnitude = sqrt(6^2 + 3^2) = 6.71
A+B angle = arctan(6/3) deg north of east = 63.4 deg (first quadrant)
So C magnitude = 6.71 (same as A+B)
[C angle = 63.4 deg south of west (third quadrant) = -180+63.4 deg polar = -116.6 deg
Answer:
b. end on the n = 2 shell.
Explanation:
When hydrogen atoms move from higher energy level to lower energy level then it shows spectral lines and these lines are known as Balmer series. The only four lines are visible and other liens are not in the visible range.
The Balmer series formed by hydrogen electron and it ends when n = 2.
Therefore the answer is b.
b. end on the n = 2 shell.
Pushing, pulling is the answer