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An electric motor rotating a workshop grinding wheel at a rate of114 rev/min is switched off. Suppose the wheel has a constant negative angular acceleration of magnitude1.90 rad/s2.
a) How long does it take for the grinding wheel to stop?
b) During how many radians has the wheel turned during the interval found in (a)?
An unusual spring has a restoring force of magnitude F = (2.00 N/m)x + (1.00 N/m2)x 2, how fast is it moving when the spring returns to its equilibrium length
A cylinder of volume 0.330 m3 contains 12.0 mol of neon gas at 23.2°C. Assume neon behaves as an ideal gas. Find the internal energy of the gas when its volume is 1.000 m3
The Balmer series in atomic hydrogen is the series of wavelengths emitted by the electron when it makes a transition from an energy level with n > 2 to the n = 2 level, Find the four largest wavelengths in the Lyman series
A car traveling at 25 m/s ( about 55 mph) crashes into a road barrier and comes to a stop in 0.2 sec. What is the average force in Newtons felt by a 75 Kg person in a set belt
two long charged thin-walled concentric cylinders have radii of 3.0 and 6.0 cm. the charge per unit length is 6.50 10-6
q1. two identical 30 rm g particles each carry 3.0 rm mu c of charge. one is held fixed and the other is placed 1.0 rm
A spider's web can undergo SHM when a fly lands on it and displaces the web. For simplicity, what is the frequency of oscillation when the fly lands
a physics instrustor shakes a 2.0 m long alumium rod to create the pattern, find is this a transverse wave or a longtudinal wave
A 330g airtrack cart on a horizontal air track is attached to a string that goes over a pulley with a moment of inertia of 5.00*10^-6 kg*m^2 and a radius of 1.35 cm. Write newtons second law for each of the three objects
A black, totally absorbing piece of cardboard of area A = 3.0 cm2 intercepts light with an intensity of 3.9 W/m2, What radiation pressure is produced on the cardboard by the light
You measure the period of your heartbeat on a particular EKG graph to be 0.9451 ± 0.06576 seconds. What is your heart rate in beats per minute
Two resistanceless rails 32 cm apart rest on a 6.0° ramp. They are joined at the bottom by a 0.63 resistor, What is the terminal (steady) velocity of the bar as it slides frictionlessly down the rails
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