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At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 2.78 m/s, and an 64.7-kg person feels a 209-N force pressing against his back. What is the radius of a chamber?
A pilot knows a 7.00 km distance lies between two landmarks A and B on the level ground below. When he is over landmark A, What is the airplanes altitude
one mole of hydrogen one mole of nitrogen and one mole if oxygen are held in a 22.4*10^3 cm^3 enclosed vessel at 20C find the pressure in vessel
A spherical mirror is to be used to form ona screen 5.00m from the object, an image five times the size of the object. Describe the type of mirror required.
A steel ball (density = 7860kg/m^3) with a diameter of 6.8 cm is tied to an aluminum wire 88 cm long and 2.0 mm in diameter. Find the amount of stretch in the wire at the top of the circle
If the hour and minute hands of an analog clock are aligned at 00:00 (midnight), at what time will they next realign
The motor of an electric drill draws a 8.11 A current at the power line voltage of 120 V rms. What is the motor's power (in W) if the current lags the voltage by 27.1°
If an ocean wave strikes the land every 12 seconds and the horizontal distance between adjacent crests and troughs is 4 m, what is the average speed of the wave
two masses are separated by 3.85m. the mass of objects are 5.98kg and 7.35 kg. how far is the center of mass of the system
A 70-kg stunt pilot pulls out a drive while flying at 50 m/s. If he flies a circular path with a radius of 200 m, what force does his seat exert on him at the bottom of the path
When the galvanometer in a wheatstone bridge circuit shows no deflection, explain why are the voltages across opposite branches on each side of the galvanometer necessarily equal?
A sound wave with intensity 10 mW/m2 interferes destructively with a sound wave that has an intensity of 1 mW/m2. What is the intensity of the superposition of the two
Forces in a Three-Charge System Coulomb's law for the magnitude of the force between two particles with charges and separated by a distance is , where , and is the permittivity of free space.
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