Atotal of 54.0 joules of heat are absorbed as 58.3 g of lead is heated from 12.0° c to 42.0° c. what is the specific heat of lead? * 1 point 0.031 joules/grams x degrees celsius 0.022 joules/grams x degrees celsius 0.017 joules/grams x degrees celsius 0.029 joules/grams x degrees celsius

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused this symptom?