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A train with a total mass of 2.4 × 10^6 kg rises 715 m while traveling a distance of 64 km at an average speed of 12 km/h. The frictional force is 0.8 percent of the weight. The acceleration of gravity is 9.81 m/s^2.
Find power output of the train's engines. Answer in units of MW
A hypodermic syringe contains a medicine with the density of water, Determine the medicine's flow speed through the needle
You blow some more, and the film detaches to form a complete spherical bubble of radius 3.46 cm, which floats off the wand. What is the net flux through the bubble
A distant galaxy emits light that has a wavelength of 683.2 nm. On earth, the wavelength of this light is measured to be 688.4 nm. (a) Decide whether this galaxy is approaching or receding from the earth.
A cloud mass moving across the ocean at an altitude of 2000 m encounters a coastal mountain range. As it rises to a height of 3500 m to pass over the mountains, it undergoes an adiabatic expansion.
A 2.0 object is attached to a spring (k=55.6 N/m) that hangs vertically from the ceiling. find the magnitude of the maximum acceleration of the object
A 250, 35-cm-diameter turntable rotates on frictionless bearings at 60. A 25 block sits at the center of the turntable. A compressed spring shoots the block thoroughly outward next to a frictionless groove in the surface of the turntable.
A hollow spherical shell has mass 7.95kg and radius 0.225m, What is the kinetic energy of the shell after it has turned through 6.75rev
Two alpha particles (helium nuclei), each consisting of two protons and two neutrons, What is the distance between these particles at this time
Hello Since a prop-airplane can remain in horizontal flight indefinitely, why then, in the air shows, when the airplane is pointing vertically upward
Two identical cars (m = 1350 kg) are traveling at the same speed of 28.0 m/s. estimate the magnitude of the total momentum of the two cars
An emf is induced in a conducting loop of wire 1.14m long as its shape is changed from square to circular, Find the average magnitude of the induced emf if the change in shape occurs in 4.23s
A frictionless, vertical wire has two metal beads on it. The beads are held 30 cm apart by horizontal magnets, If the two beads each have a mass of 49.7 g, what is the kinetic energy of the second immediately after impact
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