subject
Physics, 30.07.2021 03:40 alex7881

Sunlight above the Earth’s atmosphere has an intensity of 1.30 kW/m2 . If this is reflected straight back from a mirror that has only a small recoil, the light’s momentum is exactly reversed, giving the mirror twice the incident momentum. a. Calculate the force per square meter of mirror.
b. Very low mass mirrors can be constructed in the near weightlessness of space, and attached to a spaceship to sail it. Once done, the average mass per square meter of the spaceship is 0.100 kg. Find the acceleration of the spaceship if all other forces are balanced.
c. How fast is it moving 24 hours later?

ansver
Answers: 2

Other questions on the subject: Physics

image
Physics, 22.06.2019 00:30, powberier6979
Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.
Answers: 2
image
Physics, 22.06.2019 01:30, millieD77
John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?
Answers: 1
image
Physics, 22.06.2019 06:00, Bengynease2598
What will a positive and a negative charge do if they are separated from each other?
Answers: 3
image
Physics, 22.06.2019 06:30, jordanbyrd33
Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)
Answers: 1
You know the right answer?
Sunlight above the Earth’s atmosphere has an intensity of 1.30 kW/m2 . If this is reflected straig...

Questions in other subjects:

Konu
Mathematics, 26.03.2020 23:28
Konu
Spanish, 26.03.2020 23:28
Konu
Mathematics, 26.03.2020 23:28