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An earth satellite remains in orbit at a distance of 11494 km from the center of the earth. What speed would it have to maintain? The universals gravitational constant is 6.67 X 10(to negative 11th) N times M squared /kg2 and the mass of the earth is 5.98 X 10 to 24th kg. Answer in units of m/s
a cord is used to vertically lower an initially stationary block of mass m 15 kg at a constant downward acceleration
what is the amplitude of the electric field vector of the satellite broadcast as measured at the surface of the earth? Use Eo=8.85*10^-12C/(V*m) for the permittivity of space
Particles pass through a single slit of width 2.3 mm. The de Broglie wavelength of each particle is 515 nm. After the particles pass during the slit, they spread out over a range of angles.
Water flows at the rate of 2.99 kg/s through a hose with a diameter of 3.70 cm. what is the speed of water in this hose? If the hose is attached to a nozzle with a diameter of 0.750 cm, what is the speed of water in the nozzle? m/s
A 22 g dried sample of food is placed in an aluminum bomb calorimeter and burned completely. The device consists of an aluminum chamber (0.50 kg) containing the sample, how many kilocalories did the food make available
A 50kg mass is tied to a massless rope wrapped around a solid cylindrical drum, mounted on a frictionless horizontal axle. Find the drum's mass
A farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1.658 diopters. Since these eyeglasses do not completely correct her vision, she must hold a newspaper 41.3 cm from her eyes in order to read it.
A 75 kg person travels in a car at 50. mph over a hill. The radius of curvature at the peak of the hill is 90. m. What is the normal force of the seat pushing up on her
A battery with an emf of 12.0 V shows a terminal voltage of 11.5V when operating in a circuit with two lightbulbs rated at 3.0 W, What is the battery's internal resistance
Weddell seals foraging in open water dive toward the ocean bottom by swimming forward in a straight-line path tipped below the horizontal. The tracking data for one seal showed it taking 4.0 min to descend 360 m below the surface while moving 920 ..
A 60.0 kilogram skier starts from rest at the top of a ski slope 95.0 meter high. If frictional forces do -10.5 kJ of work on her as she descends, find how fast is she going at the bottom of the slope
Two 11cm diameter electrodes 0.50cm apart form a parallel-plate capacitor. The electrodes are attached by metal wires to the terminals of a 15V battery. After a long time, the capacitor is disconnected from the battery but is not discharged.
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