A) Calcular la energía cinética, potencial y mecánica de un cuerpo de 90 N que se encuentra a 95 metros del suelo a.1) al comienzo de la caída
a.2) a 35 metros del suelo
a.3) al llegar al suelo

b) Un alpinista de 75 kg trepa 400 metros por hora en ascensión vertical ¿Que energía potencial gravitatoria gana en una ascensión de 2 horas?

What is the rate of change in a objects position?

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.

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