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Instructions for finding a buried treasure include the following: Go 75 paces at 240 degree, turn to 135 degree and walk 125 paces, then travel 100 paces at 160 degree. Find the resultant displacement from the origin?
On the planet Zardem, the standard unit of time is the Zarsec, or Zs, where 1 Zs = 2.2s. how fast is the runner traveling
A weather balloon is designed to expand to a maximum radius of 24 m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. what is its radius at liftoff
An object is placed to the left of a convex lens and on the optical axis. find the magnification of the image formed by the lens
A soap fil (n=1.33) is 465 nm thick and lies on a glass plate (n=1.52). Sunlight, whose wavelengths (in vacuum) extend from 380 to 750 nm, travels during air and strikes the film perpendicularly.
Compute the speed that a gas phase oxygen molecule would have if it had the similar energy of an infrared photon λ=5000nm,a visible photon λ=500nm, a UV photon λ=100nm, an X-ray photon λ=0.1nm. Use the RMS speed for a molecule√3kT/M
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 10 A, and that of the vacuum cleaner is 5.0 A, Determine the power consumed by the blow-dryer
220 cm3 of hot tea at 89°C are poured into a very thin paper cup with 70 g of crushed ice at 0°C. Calculate the final temperature of the "ice tea"
Three point charges, -4.9 x 10-9 C, -9.7 x 10-9 C, and +7.1 x 10-9 C, are fixed at different positions on a circle. What is the radius of the circle
A flat sheet of crown glass has a thickness of 1.4 cm. It is on top of a flat sheet of crystalline quartz that has a thickness of 1.3 cm. Light strikes the crown glass vertically and travels through it and then during the crystalline quartz. In the t..
In a collision between a light hydrogen molecule and a heavywater molecule, the momentum lost by one molecule is exactly the same as the momentum gained by the other molecule. When a baseball player hits a home run, the baseball receives agreater i..
A 782 kg car is pushed at a constant positive velocity in a flat parking lot whose coefficient of friction is 0.18. If the car is pushed for 23 meters, what work is done by the forces acting on the object
q1. what will be the equilibrium temperature when a 223 g block of copper at 258 c is placed in the 178 g aluminium
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