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A mery go round starts spinning at 14 rev per min, but slows to 2 rev per min after 4 min. how many revolutions does the merry go round make in 4 min a) 8 revb) 32 revc) 44 revd) 56 rev.
A cylinder with a piston contains 0.300 moles of oxygen at 2.20 × 105 pa and 340 K. The oxygen may be treated as an ideal gas. Find the heat added during the final cooling
A car is traveling at 47.0 km/h on a flat highway. what is the minimum distance in which the car will stop
A 581-{\rm N} physics student stands on a bathroom scale in an 821-{\rm kg} (including the student) elevator that is supported by a cable. Find the magnitude of the acceleration of the elevator
The lens of an endoscope is carefully matched such that the light ray from the edge of the lens enters the fiber at an angle. What focal length should the lens have
When light of wavelength 370 nm falls on a barium surface, electrons having a maximum kinetic energy of 0.86 eV are emitted. the frequency corresponding to the cutoff wavelength
Find the gage pressure at the center of pipe A in pounds per square inch and in kilopascals.
height of the helicopter above ground given by h2.90t3. at t1.90s the helicopter releases a bag. how long does it take
You walk from your house 0.25 miles West to Fred's house, What is your displacement from your initial position
A charged particle A exerts a force of 2.47 μN to the right on charged particleB when the particles are 13.5 mmapart. Particle B moves straight away from A tomake the distance between them 18.6 mm. What vector force does particle B then exert on A?
A 1486-kg car is moving westward with a speed of 20.3 m/s, and a 2898-kg truck is traveling east with a speed of 17.8 m/s. Find the velocity of the center of mass of the car-truck system
One mole of oxygen gas is at a pressure of 5.40 atm and a temperature of 29.0°C. (a) If the gas is heated at constant volume until the pressure triples, what is the final temperature? °C (b) If the gas is heated so that both the pressure and volume a..
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. find the electric flux through one surface of the icosahedron
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