Um automóvel é dirigido ao longo de uma estrada caracterizada por zonas alternadas de velocidades permitidas de 40km/h e 60km/h. Se o motorista mantém rigorosamente essas velocidades nas respectivas zonas, e se todas as zonas têm o mesmo comprimento, qual a velocidade média em km/h, em um trecho correspondente a um número par de zonas?

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

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

Decreased sensitivity to an unchanging stimulus is known as