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A spherical bubble of air is introduced into a vein in the ankle. The diameter o this bubble is 0.5mm. As the bubble returns with the blood stream towards the heart, the pressure in the blood decreases due to the decreasing height of the column of blood above it. If the pressure in the ankle is 2.77 X10^5 dyn/cm^2, what is the diameter of the bubble after it has risen 1.4m? Suppose that the density of blood is 1.05g/cm^3 and the only reason the pressure changes is due to the weight of the blood.
You are holding a conducting loop of copper and looking at its circle. Behind it is a long current-carrying wire carrying the current from left to right. what is the direction of current flow if any
A battery of internal resistance r = 0.2 and emf E = 12.0 V. If the battery is charged by an external source with a charging current of 1.2 A. What is the potential difference across the battery
In some places, insect "zappers," by their blue lights, are a familiar sight on a summer's night. These devices utilize a high voltage to electrocute insects. One such device uses an ac voltage of 4200 V, which is obtained from a standard 120-V outle..
Sodium ions (Na+) move at 0.858 m/s through a bloodstream in the arm of a person standing near a large magnet. what would be the magnetic force on the arm
A 205 kg log is pulled up a ramp by means of a rope that isparallel to the surface of the ramp. The ramp is inclined at30% with respect to the horizontal. Find the tension in the rope
Bowling balls can be made from a variety of substances and are required to have a circumference of roughly 27.6 inches. calculate the thickness of the shell
a generator rotates at 85.hz in a magnetic field of 0.030 t. it has 1000 turns and produces an rms voltage of 150 v and
A think disk of radius R carries a surface charge σ. It rotates with angular frequency ω about the z axis, which is perpendicular to the disk and through its center. What is B along the z axis? What is the magnetic moment of the spinning disk?
Two 64-g ice cubes are dropped into 183 g of water in a glass. If the water is initially at a temperature of 25° C and the ice is at -11° C, what is the final temperature of the drink
A source of radio waves is emitted from the center of our galaxy 1.8 x 104 light years away. How much power do the radio waves carry
On a particular afternoon in Houston, the nitrogen (N2) molecules in the air have an rms speed of 515 m/s. What is the rms speed of the carbon dioxide (CO2) molecules
A spacecraft approaching the earth launches an exploration vehicle. After the launch, What is the speed of the exploration vehicle relative to the spaceship
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