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The engine of a locomotive exerts a constant force of 7.0 x 10^5 N to accelerate a train to 78 km/h. Determine the time (in MIN) taken for the train of mass 1.3 x10^7 kg to reach this speed from rest.
Point O is the source of the sound that vibrates constantly resulting in a wave running from O to P propagating at the speed of 80 m / s, amplitude of 14 cm and a frequency of 20 Hz. Point Q is 9 m from O. if the point O has vibrate 16 times, calcula..
A spaceship is moving toward earth at .6c. It fires arocket away from the earth at .4c relative to the spaceship. What is the velocity of the rocket relative to the earth
"South Stream" was a proposed oil pipeline from Russia into southern Europe, begun and then cancelled due to regional politics. A new route "Blue (Turkish) Stream" has begun construction, bringing Russian oil and gas through Turkey for European cu..
A 10 kilogram mass hangs on a rope wrapped around a freely rotating 2 kilogram cylinder of radius 10 centimeter. Find the accelerations of both the mass and the cylinder
Light in a vacuum is incident on a transparent glass slab. Theangle of incidence is 35.6°. What is the index of refraction of the liquid
What quantum number of the hydrogen atom comes closest to giving a 100- nm-diameter electron orbit, What is the electron's speed in this state
the 20 g centrifuge at nasas ames research center in mountain view california is a horizonatal cylinderical tube 58 ft
a child is riding a merry go round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of .745 rad/s^2. what is the magnitude of the acceleration of the child
Suppose the magnetic field changes uniformly from 0.405 T to 0.220 T in the next 0.684 s. Compute the induced emf in the coil
Two concentric shells of uniform density having masses M1 and M2are situated. Discover the force on a particle of mass m when the particle is located at (a) r = a, note speed of propagation of gravitation in Newtonian physics. (b) r = b, and (c) r = ..
The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and calcium, that are dissolved in water as ions. What is the resistance of the ion channel
a 14 kg steel ball is launched from a cannon at an angle of 20 degrees above the horizontal. the cannon exerted an
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