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A student investigating circular motion places a dime 10 cm from the center of a 33 1/3-rpm record on a turntable. The record player can accelerate at 1.42 rad/s squared. The student notes that the dime slides outward 2.25 s after she has switched on teh turntable. (a) Why does the dime slide outward? (b) What is the coefficient of static friction between the dime and the record?
The energy of the first excited state of a hydrogen atom is -0.34 eV ± 0.0003 eV. What is the average lifetime of for this state
Find the electric field inside the cylinder
A 2kg hanging block pulls a 3kg block along a very smooth table. Compute for the acceleration of the system and the tension of the cord
A gas bottle contains a mixture of Helium and Oxygen molecules O2 is diatomic. Calculate vrms for the Helium molecules
an elevator and its load have a combined mass of 1450 kg. find the tension in the supporting cable when the elevator
an inventor approaches you with a device that he claims will take 90 j of thermal energy input and produce 260 j of
An electric dipole consists of 1.50g spheres charged to \pm 2.30nC at the ends of a 6.00cm long massless rod. What is the dipole's angular velocity at the instant it is aligned with the electric field
The refractive index n of glass depends on the color (wavelength) of the light passing through it. What is the angle between the blue beam and the red beam in the glass block
A dipole moment is placed in a uniform electric field oriented along an unknown direction. The maximum torque applied to the dipole is equal to 0.1 N.m. When the dipole reaches equilibrium its potential energy is equal to -0.2 J.
A machine shop grinding wheel accelerates from rest with a constant angular acceleration of 2.6 rad/s^2 for 7.6 s, Find the total number of revolutions turned
A lens of focal length 10cm produces a real image with magnification of 2. Find the object and image distances and characterize the image
Suppose that the dipole moment associated with an iron atom of an iron bar is 2.4 x 10-23 J/T. Assume that all the atoms in the bar, which is 6.5 cm long and has a cross-sectional area of 1.1 cm2, have their dipole moments aligned. (a) What is the di..
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