In our solar system, the constant "K" in kepler's Third Law is equal to 1 if AU and Earth years are used . Suppose astronomers found a new planet, very close to the sun. If the average distance from the planet to the sun were 1/4 AU , how long would the planets period be ?

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?

Which of the following compounds would be primarily ionic? methane, ch4, ammonia nh3, calcium chloride, cacl2, or carbon dioxide, co2