An alarm clock is set to ring for a total of 1.00 minute
it is placed on a spaceship moving at 0.6 c
according to mission control on earth, the alarm clock rings for:
a) 0.60 min
b) 0.64 min
c) 0.80 min
d) 1.00 min
e) 1.25 min

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

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z

Convection occurs when thermal energy is transferred by the movement of