When liquid gold becomes a solid, its particles get closer together. which best describes what happened to the gold?
a. the conservation of magnetism
b. the change in solubility in a physical change
c. the change in melting point in a physical change
d. the rearrangement of particles in a physical change

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)

In the circuit shown below, with each bulb holding a resistance of 60 ohms, how many amps of current are flowing? express your number as a decimal.