A1: 3 scale model of a torpedo is tested in a wind tunnel to determine the drag force. the prototype operates in water, is 533 mm in diameter, and is 6.7 m long. the desired operating speed of the prototype is 28 m/s. to avoid compressibility effects in the wind tunnel, the maximum speed is limited to 110 m/s. however, the pressure in the wind tunnel can be varied while holding the temperature constant at 200c. at what minimum pressure should the wind tunnel be operated to achieve dynamically similar test? at dynamically similar test conditions, the drag force on the model is measured as 618 n. evaluate the drag force expected on the full scale torpedo.

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?