A nucleus of Uranium-238 (m = 3.95292599x10^-25 kg) ejects an alpha particle (m = 6.64465675x10^-27 kg), transmuting into a nucleus of Thorium-234 (m = 3.88638509x10^-25 kg).
If the alpha particle is ejected to the right at 1.443x10^7m/s, determine the magnitude of the velocity
of the nucleus as it recoils to the left.
V= ? •105 m/s to the left

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

What do you think car designers do if the damage caused by a crash test is too severe?

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c