Um velejador está navegando em um rio com velocidade constante, em relação à água, com módulo igual a 4 m/s. A correnteza se movimenta em relação às margens com velocidade constante de 3 m/s. Determine o módulo da velocidade do velejador, sabendo que ele navega mantendo seu eixo em uma direção perpendicular à margem

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

From the perspective of an employee that effective channeling of work related information and concerns