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Q. Soft drinks are commonly sold in 12 g aluminum containers. To the order of magnitude, how many such containers are thrown away or recycled each year by U.S. consumers?
Q. A force vector has a magnitude of 584 newtons and points at an angle 45o of below the positive x axis. What are (a) x scalar component and (b) y scalar component of the vector?
A piece of Nichrome wire has a radius of 5.00 x10-4 m. It is used in a laboratory to make a heater that uses 2.00 102 W of power when connected to a voltage source of 120 V. Ignoring an effect of temperature on resistance, estimate the necessary l..
A 1.78 m long air column is open at both ends. The frequency of a certain harmonic is 828 Hz, and the frequency of the next-higher harmonic is 920 Hz. find out the speed of sound in the air column.
A generator uses a coil that has 210 turns and a 0.20-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. assume that each turn of the coil is a square (an approximation), conclude the length of wire f..
A 79.2 kg airplane pilot pulls out of a dive by following, at a constant speed of 191 km/h, the arc of a circle whose radius is 321m.
If the ball is released from rest at a height of 0.91 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? suppose the ball is a solid sphere of radius 3.7 and mass 0.14.
Two point charges, +3.09 µC and -6.05 µC, are separated by 1.33 m. What is the electric potential midway between them?
What is the minimum speed you must give the air at the top. find its final kinetic energy.
What are the direction and magnitude of the magnetic force the field exerts on the proton.
A circular loop in the plane of the paper lies in a 0.55T magnetic field pointing into the paper. If the loop's diameter changes from 20 cm to 5 cm what is the magnitude of the average induced emf.
The center of a 1.40km diameter spherical pocket of oil is 1.5 km beneath the Earth's surface.Estimate by what percentage directly above the pocket of oil would differ from expected value of g for a uniform Earth? Assume the density of oil is 8.0 ..
The energy of a simple harmonic oscillator could be doubled by increasing the amplitude by a factor of approximately
Inertia and torque of the rotating bodies.
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