3 Alpha Centauri is approximately 4.3 light years from Earth. A light year is equal to 9.46 trillion
kilometers. How many trillion kilometers away
from Earth is Alpha Centaurl?
® 2.2 trillion kilometers
5.16 trillion kilometers
13.76 trillion kilometers
40.68 trillion kilometers

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

Of is j/kg·k. if a 2.6 kg of isk to k,is ?