Which particles make up the nucleus of an atom?
a. protons and electrons
b. neutrons and electrons
c. protons only
d. protons and neutrons
e. neutrons only

Which of the following statements is true about planck’s law

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)