Salmon often jump waterfalls to reach their breeding grounds. Starting downstream, 2.85 m away from a waterfall 0.602 m in height, at what minimum speed must a salmon jumping at an angle of 28.5◦ leave the water to continue upstream? The acceleration due to gravity is 9.81 m/s^2. Answer in units of m/s.

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction