Tres fuerzas actúan sobre un objeto que se encuentra en reposo. Si F1 = 100 N, 40°; F2 = 100 N, 320°, determine la magnitud y dirección de la tercera fuerza.

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?

Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm