duckly wrote in message news:*** Email address is removed for privacy *** .com... Can I install Microsoft Office 2010 on both my desktop PC and my laptop if they both belong to me? plan to buy a PC next January. Can I buy the 2010 Office business version (which permits 2 activations-on my primary PC and my laptop) and install it first on my new laptop and later install it on my primary PC after I buy it next Jan? In other words, does it matter what sequence I install the software?
Confidence votes 12. If an Earth-like planet was orbiting at the same distance from its double solar mass star as the Earth is from the Sun (1 astronomical unit, written 1 AU), then the force would be double that experienced by the Earth.he force at constant distance is just proportional to the product of stellar and planetary masses. We don't know of any reason why an Earth mass planet should not form at 1 AU from a star of 2X Solar mass, though we as yet have few observational measurements of such low mass extra-solar planets.
The speed of an interplanetary solar sail spacecraft will depend on how long it has been propelled by the pressure of sunlight. The acceleration from sunlight is very small -- approximately five ten-thousandths of a meter per second per second, depending on the size and weight of the sail and the spacecraft. photon reflecting off the mirror-like surface of a solar sail gives the sail a double kick -- a push equal to twice the photon's momentum (one push from the sail stopping the photon and one from it reflecting the photon and accelerating it away).