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The angular velocity of a rotor in a centrifuge increase constantly from 420 rad/s to 1420 rad/s in 5.00 s. a) Determine the angular displacement through which the rotor turns. b) What is the angular acceleration?
a box rests on the ice of a frozen pond. A man applies a horizontal force of 48 N to the box causing the box to accelerate at 3 m\s^2. What is the mass of the box
A projectile is fired with an initial speed of 61.7m/s at an angle of 31.9^\circ above the horizontal on a long flat firing range. Determine the total horizontal distance covered
A tungsten filament incandescent light bulb emits spherical electromagnetic waves of 50 Watts isotropically. What is the radiation pressure
A certain diatomic molecule has a vibrational frequency of 1.35 × 1014 Hz and is in the third vibrational state and the L = 9 rotational state (I = 3.0x10-46 kg*m2. what is the maximum frequency radiation that is emitted
A rod of length l and mass m, pivoted at one end, is held by a spring at its midpoint and a spring at its far end, both pulling in opposite directions. The springs have spring constant k, and at equilibrium their pull is perpendicular to the rod. ..
A turntable must spin at 33.7 rpm (3.53 rad/s) to play an old-fashioned vinyl record. How much torque must the motor deliver if the turntable is to reach its final angular speed in 3.0 revolutions, starting from rest? The turntable is a uniform disk ..
At 100 °C the rms speed of nitrogen molecules is 576 m/s. Estimate the rate of molecular collisions (collisions/s) on this wall
If two successive overtones of a vibrating string are 420 Hz and 480 Hz, what is the frequency of the first overtone
Three equal point charges, each with charge 1.25 , are placed at the vertices of an equilateral triangle whose sides are of length 0.400. What is the electric potential energy of the system
A 65.1-kg circus performer is fired from a cannon that is elevated at an angle of 42.4° above the horizontal. find the effective spring constant of the firing mechanism
A 5000 ohms resistor and a 50uF capacitor are connected in series at t=0 with a 6V battery. The capacitor is initially uncharged. What is the maximum charge stored on the capacitor
When a65.0-V emf device is placed across two resistors in series, a current of 10.0 A is flowing in each of the resistors. When the same emf device is placed across the same two resistors in parallel, the current through the emf device is56.0A. What ..
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