An air bubble originating from an under- water diver has a radius of 8 mm at some depth h. When the bubble reaches the surface of the water, it has a radius of 10.6 mm. The acceleration of gravity is 9.8 m/s². Assuming the temperature of the air in the bubble remains constant, determine the depth of the diver. Answer in units of m. Determine the absolute pressure at this depth. Answer in units of kPa.
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

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- A homogeneous pulley with two grooves consists of two wheels which turn together as one around the same axis. The moment of inertia of the two wheels together is ICM = 40 kg m2. The radii are: R1 = 1.2 m and R2 = 0.4 m. The masses that hang on both sides of the pulley are m1 = 36 kg and m2 = 12 kg. We will assume that the masses of the ropes are negligible. Determine the angular acceleration of the pulley, acceleration of the masses, and the tensions of the ropes.The pressure difference between the interior and exterior of an air bubble in water is 25.5 torr. The water surface tension is 73 mN/m, what is the diameter of the air bubble? 43.0 mm 11.5 mm O86.1 μm 43.0 μm 86.1 mmThe four tires of an automobile are inflated to a gauge pressure of 1.9 x 105 Pa. Each tire has an area of 0.024 m² in contact with the ground. Determine the weight of the automobile. N
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