What is the thermal energy of an object a. the total kinetic and potential energies of its particles b. the total kinetic energy of its particles c. the total potential energy of its particles d. its total temperature

By what primary heat transfer mechanism does the sun warm the earth?

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?

How many astronauts have walked on the moon?