A lead bar required 2000 Joules of energy to increase its temperature from 25ºC to 150ºC. What is the mass of the lead bar? (Specific heat of lead = 129 J/kg°C) A .124 kg
B 124 kg
C 12,444 kg
D 1,244 kg

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

If a solution had a ph of 7 what is the solution