Un avió de 10000kg vola horitzontalment a 9 km d'altura i té una energia mecànica de 109 J, calculeu: a) Les energies potencial i cinètica en aquesta posició. b) La seva velocitat.

Which statement best describes how private industry decides where to spend the money on research and development

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.