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Taking motion towards East as +ve ....
(0.65kg x 3.0m/s) + (0.65kg x - 2.0m/s) = 0.65 kg.m/s
(0.65 x v?) + (0.65 x - 1.50) = 0.65(v - 1.50)
By conservation .. before = after
0.65 = 0.65(v - 1.50)
1 = (v - 1.5) .. .. ►v = (+) 2.50 m/s (East)
Answer:
The answer is ""
Explanation:
Z=2, so the equation is
Calculate the value for E when:
n=2 and n=9
The energy is the difference in transformation, name the energy delta E Deduct these two energies
In this transition, the wavelength of the photon emitted is:
Answer:
Explanation:
Given:
Horizontal distance = 30 m
Note that Wavelength, lambda is the distance between two consecutive crests/troughs. Since,
One boat is at trough, the other is at crest.
The distance between a crest and a trough next to it = lambda/2
Complete cycles = 3 cycles
Time taken for the 3 cycles = 15 s
Vertical distance = 3.8 m
Wavelength, lambda = 2 × horizontal distance
= 2 × 30
= 60 m
Amplitude = vertical distance from the extreme loint to the mid point
= y/2
= 3.8/2
A = 1.9 m
In one cycle = 18/3
= 6 s/cycle
frequency, f = 1/T
= 1/6 = 0.17 Hz
speed,v = lambda × frequency
= 60 × 0.17
= 10 m/s
Mass of 25 kg weight is 25/9.81 slug of mass.