Which of the following processes do not depend on spontaneous radioactive decay?
Check all that apply.
O A. radium paint that makes watch dials glow in the dark
O B. the process of bone-scan imaging
C. the energy production of the sun
D. using carbon-14 to determine fossil ages
E. the energy production in nuclear reactors

50 g of ice at 0°c is dropped in a beaker containing 100 g of water at 0°c. what will be the contents of the beaker after 5 hours? assume that the room temperature is 0°c.

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.