Tycho Brahe's contribution to Kepler's Laws of Planetary Motion werea. his detailed and accurate observations of the planet's position. b. his observations of Jupiter's moons. c. a mathematical explanation of epicycles. d. a precise lunar calendar. the correct explanation of lunar phases.

i think they are all correct

explanation:

they seem good

the part of the wave he is travelling on is the crest

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

b. a lightning bug, plug of grass, and a worm