Una ola en el océano tiene una longitud de 15m. Una onda pasa por unadeterminada positionfija cada 3s. ¿Cuál es la velocidad de la onda?

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

Could someone . i have tried to solve myself but my calculation is off

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2