Determining the speed of the river current
A swimmer heads directly across a river, swimming at 1.00 m/s relative to the water. She arrives at a point 47.0 m downstream from the point directly across the river, 79.0 m wide. What is the speed of the river current?
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The velocity of a diver just before hitting the water is -9.6 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.82 s of the dive?
On a recent trip out of the country a chemistry professor found a golden-colored metal coin at a flee market. The person selling the coin priced it at $200, claiming it was pure gold.
Automated manufacturing operations are quite precise but still vary, often with distributions that are close to Normal. The width in inches of slots cut by a milling machine follows approximately the N(0.8750, 0.0012) distribution.
Estimate the pressure exerted against a sand below the bottom of the surface casing at a depth of 5,500 ft. Assume ideal gas behavior.
If the densities of 20%, 50% and 70% solutions are 0.69 and 0.58 and 0.49 g/mL, respectively, and the denisty of the unknown solution is 0.50 g/mL, what is the approximate concentration of the unknown solution?
The event A is defined as follows. A = event the student is between 26 and 35 inclusive. Determine the number of outcomes that comprise the event (not A).
Calculate the relative amount of iodine-132 (a/a0) in a patient's body 48 hours after receiving a dose. After determining the value of k, define a vector t= 0, 4, 8, ..48 and calculate the corresponding value of a/a0.
What is the horizontal distance traveled by the hammer between the instant it leaves the roof and the instant it hits the ground?
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