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Jo has a test for a nasty disease. We denote Jo's state of health by the variable a and the test result by b.
The result of the test is either ‘positive' (b = 1) or ‘negative' (b = 0); the test is 95% reliable: in 95% of cases of people who really have the disease, a positive result is returned, and in 95% of cases of people who do not have the disease, a negative result is obtained. The final piece of background information is that 1% of people of Jo's age and background have the disease.OK - Jo has the test, and the result is positive. What is the probability that Jo has the disease?
A 0.075 kg arrow is fired horizontally. The bow string exerts an average force of 65N on the arrow over a distance of 0.90m with what speed does the arrow leave the bow? A 100kg crate is being pulled across a horizontal floor with a force P that make..
A spacecraft is in a circular orbit about the moon, 1.86 x105 m above its surface. The speed of the spacecraft is1460 m/s, and the radius of the moon is 1.74 x 106 m. If the moon were a smooth, reflective surface, what would be the apparent speed of ..
One particle has a mass of 4.00 x 10-3 kg and a charge of +9 µC. A second particle has a mass of 7.00 x 10-3 kg and the same charge. Find the initial separation between the particles
A small block with mass 0.4 kilogram is located against a compressed spring at the bottom of a 37o incline. Determine how much work does the friction force do on the block during the motion
A 4.40 kg ball is dropped from a height of 14.0m above one end of a uniform bar that pivots at its center. The bar has mass 7.50kg, How high will the other ball go after collision
The drawing shows four insulated wires overlapping one another, forming a square with 0.050-m sides, Calculate the current I.
A 250 g piece of ice at 0°C is placed in 430 g of water at 22°C. What is the final equilibrium temperature of the system
An AC voltage with 180 peak volts is applied across a 447 ohm resistor. To the nearest tenth of a watt, determine what is the average power
What's the largest diameter a spherical silver particle can have for there to be no more than 1 billion electron energy states over a 1 eV interval at 2 eV?
What is a hydrogen bond? Why can't we destroy bothersome pollutants by just dissolving them in the ocean? Every time you use your bottle of vinegar-and-oil salad dressing, you have to shake it up. Why?
a truck is traveling at 11.1 ms down a hill when the brakes on all four wheels lock. the hill makes an angle of 10.0deg
Given that 5100 Joule of heat is removed from the laptop when 4.6 gram of methanol is vaporized, find the latent heat of vaporization for methanol
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