An unknown wire in a circuit has a circular cross-section with diameter 3.9 mm. It carries a current of 1.3 mA. Required:
a. What is the current density, in milliamperes per square centimeter, in this wire?
b. If you assume the drift velocity in this wire is 1 Ã 10^-2 cm/s, what is the density of charge carries per cubic centimeter?
c. If the conductivity in this wire is 5.5 à 10^6 Ω^-1 m-1, what is the average time between collisions, in nanoseconds?

This question is worth 54 points ! rock falls from a ledge to the ground what energy conversion occurs during this process a potential to kinetic b kinetic to potential c thermal to mechanical d chemical to mechanical

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom