Earth has an orbital period of 365 days and it's mean distance from the sun is 1.495x10^8km. The planet Pluto's mean distance from the sun is 5.896x10^9. Using Keplers third law, calculate Pluto's orbital period in earth days

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.