With what tension must a rope with length 3.00 mm and mass 0.150 kgkg be stretched for transverse waves of frequency 45.0 HzHz to have a wavelength of 0.770 mm

Aperson standing in a canoe exerts a force of 700 n to throw an anchor over the side. find the acceleration of the canoe if the total mass of the canoe and the person is 100 kg?

Place me with this question is my last question

Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.