Answer:
Explanation:
Given
When mass is attached to the spring its frequency is
when another mass is attached to
, frequency changes to
frequency of spring mass system is given by
for
for and
divide 1 and 2
squaring
I push a box with mass 10 kg across a 15 m room. If I apply a force of 20N to do this how much work is being done on the box?
1 answer:
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Answer:
E = 4.75 x 10⁻¹⁶ J
Explanation:
given,
wavelength of the x-ray , λ = 4.18 Å
Energy of photon = ?
we know
where h is the planks constant
c is the speed of light
h = 6.626 x 10⁻³⁴ m² kg / s
c = 3 x 10⁸ m/s
now,
E = 4.75 x 10⁻¹⁶ J
hence, the energy of the photon is equal to E = 4.75 x 10⁻¹⁶ J