
Concept explainers
(a)
Interpretation:
The force exerted by the sail for the spacecraft designed to work by photon pressure which sail was completely absorbing fabric of given area
Concept Introduction:
Louis de Broglie in
h is Planck’s constant(
m is the mass of particle.
p is the momentum.
The above equation is called de Broglie relation.
The force exerted is identified by multiplying photon momentum with Avogadro’s number.
(a)

Explanation of Solution
Given:
Fabric area
Wavelength
The force is determined by multiplying the photon momentum with
(b)
Interpretation:
The exerted pressure by given radiation on the sail for the designed spacecraft has to be calculated.
Concept Introduction:
Louis de Broglie in
h is Planck’s constant(
m is the mass of particle.
p is the momentum.
The above equation is called de Broglie relation.
The force exerted is identified by multiplying photon momentum with Avogadro’s number.
Force per unit area is called pressure.
(b)

Explanation of Solution
Given:
Fabric area
Wavelength
The pressure exerted is as follows,
(c)
Interpretation:
The time taken by the craft of mass
Concept Introduction:
Louis de Broglie in
h is Planck’s constant(
m is the mass of particle.
p is the momentum.
The above equation is called de Broglie relation.
The force exerted is identified by multiplying photon momentum with Avogadro’s number.
Force per unit area is called pressure.
According to Newton’s second law the force is equal to
(c)

Explanation of Solution
Given:
Fabric area
Wavelength
Speed
Hence, velocity is equal to
The time taken is as follows,
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