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A planet is rotating around a star. If the angular velocity of the planet at the near end is 3 rad/s, find the angular velocity at the far end: R2=3R1.
An experiment measures the temperature of a 270 substance while steadily supplying heat to it. The results of the experiment show. What are (a) specific heat of the liquid phase and (b) the heat of vaporization.
If the distance between two slits is 0.031 mm and the distance to a screen is 2.50 m, find the spacing between the first- and second-order bright fringes for yellow light of 500 nm wavelength.
If the shear stress in steel surpasses about 4.00*108 N/m2, the steel ruptures. Determine the shearing force necessary to shear a steel bolt 1.05 cm in diameter.
During a circus performance, a 67-kg human cannonball is shot out of an 17-m-long cannon. determine the average net force exerted on him in the barrel of the cannon
Sphere 1 with radius R1 has positive charge q. Sphere 2 with radius 8.0R1 is far from sphere 1 and initially uncharged. what fraction of qends up on sphere 1
A 44 kilogram lady cheats on her diet and eats a 488-Calorie (488 kcal) jelly doughnut for breakfast. Determine how many stairs must the lady climb to perform an amount of mechanical work equivalent to the food energy in one jelly doughnut
An ideal (Carnot) engine has an efficiency of 43 percent. If it were possible to run it backward as a heat pump. Compute what would be its coefficient of performance
A 1.05 kg mass is attached to a light cord that is wrapped around a pulley of radius 2.65 cm, which turns with negligible friction. Find the moment of inertia of the pulley
a 1600 kg car is pulling a 375 kg trailer. together the car and trailer have an acceleration of 2.15 ms2 directly
An airplane must reach a speed of 189mi/h to take off. If the runway is 472m long, what is the minimum value of acceleration that will allow the airplane to take off successfully.
An airplane is flying with a velocity of 83.0 at an angle of 25.0 above the horizontal. When the plane is a distance 114 directly above a dog that is standing on level ground, the suitcase drops out of the luggage compartment.
A block of mass M hangs from a spring having spring constant k = 12 N/m and oscillates up and down with simple harmonic motion. What is the mass of the block
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