Which of the following effects is caused by atmospheric turbulence?
a) twinkling of stars
b) light pollution
c) magnification of images
d) diffraction of light

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?

Which accounts for an increase in the temperature of a gas that is kept a constant volume

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?